Snorkel TB120 User Manual

P/N 0191482
December, 2000

DANGER

ELECTRICAL HAZARD

The TB 120 is an all metal boom, NOT ELECTRICALLY INSULATED, aerial work platform. Do
not operate it near ELECTRICAL conductors. Regard all conductors as being energized. Use
the table and figure below to determine safe clearance from electrical conductors. Table 1 and
Figure 3 are reprinted courtesy of Scaffold Industry Association, ANSI/SIA A95, page 23.

Table 1 - Minimum safe approach distance (M.S.A.D.)

to energized (exposed or insulated) power lines

Voltage range

(phase to phase)

0 to 300V Avoid contact

Over 300V to 50KV 10 3.05

Over 50KV to 200KV 15 4.60

Over 200KV to 350KV 20 6.10

Over 350KV to 500KV 25 7.62

Over 500KV to 750KV 35 10.67

Over 750KV to 1000KV 45 13.72

Minimum safe approach distance

(Feet) (Meters)

Danger: - Do not allow machine personnel or conductive
materials inside prohibited zone.

- Maintain M.S.A.D. from all energized lines and parts
as well as those shown.

- Assume all electrical parts and wires are energized
unless known otherwise.

Caution: - Diagrams shown are only for purposes of illustrating
M.S.A.D. work positions, not all work positions.

Figure 3 - Minimum Safe Approach Distance (M.S.A.D.)

P/N 0191482

DANGER

ELECTRICAL HAZARD

THE TB 120 AERIAL WORK PLATFORM IS NOT

ELECTRICALLY INSULATED.

If the platform, booms, or any other conductive part of a TB 120 contacts a high­voltage electrical conductor, the result can be
persons on or near the machine.

GO NO CLOSER THAN THE MINIMUM SAFE APPROACH

DISTANCES ON THE OPPOSITE PAGE.

Be sure to allow for sag and sway in the wires and the work platform.
If a TB 120 comes in contact with a live electrical conductor, the entire machine

can be charged. If that happens, you should remain on the machine and not
contact any other structure or object within reach. That includes the ground,
adjacent buildings, poles, and any object not a part of the TB 120. Such contact
could make your body a conductor to the other object creating an electrical
shock hazard resulting in
or leave the TB 120 until you are sure the electricity has been turned off.

SERIOUS INJURY

SERIOUS INJURY

DEATH

or

. Do not attempt to enter

or

DEATH

for

If a TB 120 is in contact with a live conductor, the platform operator
others on the ground in the vicinity of the TB 120 to
machine, since their bodies can also form a path for electricity to ground thus
creating an electrical shock hazard with possible

DEATH

Do not attempt to operate the TB 120 ground controls when the platform, booms,
or any other conducting part of a TB 120 is in contact with electrical wires or if
there is an immediate danger of such contact.

Regard all conductors as energized.
Personnel working on or near a TB 120 must be continuously aware of electrical

hazards, recognizing that
an electrical wire does occur.

.

SERIOUS INJURY

or

STAY AWAY

ELECTROCUTION

DEATH

can result if contact with

MUST

from the

and

warn

P/N 0191482

i

TABLE OF CONTENTS

TABLE OF CONTENTS

INTRODUCTION..................................... v

SIGNS............................................... v

TYPE-STYLE CONVENTIONS.......... v

QUALIFIED OPERATORS................. v

MAINTENANCE................................. vi

RESPONSIBILITIES OF PARTIES.... vi

ADDITIONAL INFORMATION ........... vi

1. SAFETY .............................................. 1 - 1

SAFE OPERATION ........................... 1 - 1

Pre-start Inspection........................ 1 - 1

Work Place

Electrocution .................................. 1 - 2

Tipover & Falling Hazards.............. 1 - 2

Crushing......................................... 1 - 2

GENERAL SAFETY PRECAUTIONS .. 1 - 2

Personnel Precautions................... 1 - 2

Operator General Precautions........ 1 - 2

Mounting & Dismounting Precautions

Starting and Stopping Precautions. 1 - 3

Operating Precautions.................... 1 - 3

Operator Maintenance Precautions......

Fuel Handling Precautions ............. 1 - 3

SAFETY DECALS & PLACARDS...... 1 - 3

Inspection and Practices

.... 1 - 1

.. 1 - 3

1 - 3

4. GAUGES............................................. 4 - 1

AMPS

ENGINE OIL...................................... 4 - 1

FILTER MINDER

FUEL................................................. 4 - 2

HOURS

HYDRAULIC OIL FILTER.................. 4 - 2

HYDRAULIC OIL LEVEL................... 4 - 3

HYDRAULIC OIL TEMPERATURE ... 4 - 3

TEMPERATURE

5. AUTOMATIC SHUT-OFFS

& CIRCUIT BREAKERS ..................... 5 - 1

AUTOMATIC SHUT-OFFS................ 5 - 1

CIRCUIT BREAKERS........................ 5 - 1

6. CONTROLS ........................................ 6 - 1

GROUND-CONTROL BOX ............... 6 - 2

PLATFORM-CONTROL BOX............ 6 - 4

CHASSIS........................................... 6 - 6

TURNTABLE..................................... 6 - 6

................................................ 4 - 1

............................... 4 - 1

............................................. 4 - 2

................................ 4 - 3

Engine Temperature ...................... 5 - 1

Engine Oil Pressure....................... 5 - 1

Alternator Not Charging ................. 5 - 1

2. SAFETY DEVICES .............................. 2 - 1

DRIVING LIGHTS (option)................. 2 - 1

EMERGENCY STOP

EMS LIGHTS & AUDIO ALARMS...... 2 - 2

EMS TABLE....................................... 2 - 3

EXTENDIBLE-AXLE INTERLOCKS... 2 - 3

FLASHING LIGHTS (option).............. 2 - 3

FOOT SWITCH ................................. 2 - 4

GFCI OUTLET................................... 2 - 4

GRAVITY GATE................................ 2 - 4

GROUND OPERATION

GUARDRAILS ................................... 2 - 5

HORN................................................ 2 - 5

LANYARD ANCHOR POINTS ........... 2 - 5

MOTION ALARM (option).................. 2 - 5

PLATFORM WORK LIGHTS (option) .. 2 - 5

SELF-CLOSING GATE (option)......... 2 - 5

TILT ALARM HORN, SIREN, & LIGHT 2 - 6

3. SPECIFICATIONS............................... 3 - 1

GENERAL SPECIFICATIONS........... 3 - 1

PLATFORM SPECIFICATIONS......... 3 - 1

ENGINE DATA.................................. 3 - 2

ENGINE OIL CHARTS....................... 3 - 2

OVERALL DIMENSIONS................... 3 - 3

WORKING ENVELOPE..................... 3 - 4

SERIAL-NUMBER LOCATIONS........ 3 - 5

CHASSIS NOMENCLATURE ............ 3 - 5

TURNTABLE & BOOM NOMENCLATURE

SWITCHES..... 2 - 1

SWITCH...... 2 - 4

. 3 - 5

7. OPERATION....................................... 7 - 1

CONTROL STATIONS...................... 7 - 1

EMERGENCY STOPPING................ 7 - 1

STARTING FROM THE GROUND-

CONTROL BOX.............................. 7 - 1

Pre-start Conditions ....................... 7 - 1

Starting (from the ground).............. 7 - 2

STARTING FROM THE PLAT FORM-

CONTROL BOX.............................. 7 - 3

Pre-start Conditions ....................... 7 - 3

Starting (from the platform)............ 7 - 4

MOVING THE PLATFORM................ 7 - 5

MOVING THE TB 120 ....................... 7 - 8

STEERING........................................ 7 - 8

ELECTRICAL OUTLET AT

THE PLATFORM (GFCI)................. 7 - 8

EXTEND & LOCK REAR AXLES....... 7 - 9

RETRACT & LOCK REAR AXLES .... 7 - 11

8. EMERGENCY OPERATION ............... 8 - 1

EMERGENCY OPERATION FROM
THE PLATFORM-CONTROL BOX.. 8 - 1
EMERGENCY OPERATION FROM

THE GROUND-CONTROL BOX ..... 8 - 3

9. STOWING & TRANSPORTING .......... 9 - 1

STOWING......................................... 9 - 1

TRANSPORTING.............................. 9 - 1

Trailering ........................................ 9 - 1

Securing to a Transport Vehicle..... 9 - 2

Towing........................................... 9 - 4

ii

P/N 0191482

TABLE OF CONTENTS

10. DAILY INSPECTION &

MAINTENANCE..............................10 - 1

DAILY INSPECTION AND

MAINTENANCE TABLE..................10 - 1

PLACARDS AND DECALS

INSPECTION CHART 1..................10 - 12

PLACARDS AND DECALS

INSPECTION DRAWING 1.............10 - 13

PLACARDS AND DECALS

INSPECTION CHART 2..................10 - 14

PLACARDS AND DECALS

INSPECTION DRAWING 2.............10 - 15

11. TROUBLESHOOTING...................... 11 - 1

12. OPTIONS..........................................12 - 1

AC GENERATOR..............................12 - 1

AIR LINE TO PLATFORM.................12 - 1

COLD WEATHER START KIT..........12 - 2

Block Heaters................................12 - 2

Ether Injection................................12 - 2

DRIVING LIGHTS.............................12 - 2

FLASHING LIGHTS ..........................12 - 3

HYDRAULIC SYSTEM COLD

WEATHER WARM-UP KIT.............12 - 3

MOTION ALARM...............................12 - 3

PLATFORM WORK LIGHTS.............12 - 3

SELF-CLOSING GATE.....................12 - 4

SPARK ARRESTOR.........................12 - 4

TOW KIT...........................................12 - 4

13. FIRE FIGHTING & HAZARDOUS

CHEMICAL CONTAINMENT............ 13 - 1

ANTI-FREEZE ..................................13 - 1

BATTERY, LEAD/ACID..................... 13 - 1

DIESEL FUEL................................... 13 - 1

FOAM IN TIRES ............................... 13 - 1

GASOLINE........................................13 - 2

HYDRAULIC OIL............................... 13 - 2

LIQUEFIED PETROLEUM GAS........13 - 2

MOTOR OIL...................................... 13 - 2

INDEX..................................................... I - 1

WARRANTY.........................inside back cover

CALIFORNIA PROPOSITION 65.....back cover

P/N 091482

iii (iv blank)

INTRODUCTION

INTRODUCTION

The most important chapter in t his manual is
“1. SAFETY.” Take time, now, to study it
closely. The information in that chapt er m ight
save your life or prevent serious injury.

SIGNS



The following two conventions are used
throughout this manual.

1. This sign

DANGER

means:

is involved

2. This sign

Attention! Become alert! Your safety

.

CAUTION

means one of two things: (1) an act ion, about t o
be performed, is potentially hazardous and
might result in minor per sonal inj ur y if not done
correctly, or (2) an action, about to be
performed, can damage the TB 120 if not done
correctly.

Training is essential and must be performed by
a QUALIFIED person. Become proficient in
knowledge and actual operation before using
the TB 120 on the job. You must be tr ained and
authorized to perform any funct ions of the TB

120. Operation of the T B 120 m ust be within
the scope of the machine specificat ions.

Before operating the T B 120 you must r ead and
understand the operating instruct ions in this
manual as well as the decals, warnings, and
instructions on the machine itself.

Before operating the TB 120 you must be
AUTHORIZED by the person in charge to
do so.

The following rules will help ensure the
safety of personnel and help prevent

needless downtime because of damaged
equipment.

1. Only TRAINED and AUTHORIZED operators
shall be permitted to operate the eq uipm ent .

2. All manufacturer’s operating instructions and
safety rules and all employers’ safety rules and
all OSHA and other government safety rules
must be strictly adhered to.

3. Repairs and adjustments shall be made only
by QUALIFIED TRAINED maintenance
personnel.

TYPE-STYLE CONVENTIONS



Throughout this manual the nam es of switches
and gauges as well as the names of switch
positions (ON/OFF, etc.) ar e capit alized.
Furthermore, switch and gauge names ar e
printed in bold type and, when they occur in
section titles, are italicized. The purpose of all
this is to emphasize the exact name of the
switch, gauge, or switch position and thus
reduce ambiguity.

Some paragraphs in this manual are print ed in
italic. Those paragraphs apply to optional
equipment. If your T B 120 does not have the
optional equipment ignore the par agraphs.

QUALIFIED OPERATORS



The TB 120 aerial platfor m has built-in safety
features and has been factory tested for
compliance with Snorkel specifications and
industry standards. However, any personnel­lifting device can be potentially dangerous in
the hands of untrained or careless operat or s.

4. No modification shall be made to the
equipment without prior written consent of
Snorkel.

5. You must make a pre-star t inspection of the
TB 120 at the beginning of each shift. A
malfunctioning machine must not be used.

6. You must make an inspection of the work
place to locate possible hazards before
operating the TB 120.

DANGER

Misuse of this machine can result in DEATH
or SERIOUS INJURY.

Do not operate this equipment unless you
are TRAINED and AUTHORIZED and have
read and thoroughly understand all
information given in this Operator’s Manual
and on all DANGER and CAUTION signs on
the machine.

P/N 0191482

v

INTRODUCTION

MAINTENANCE



ADDITIONAL INFORMATION



Every person who maintains, inspects, tests, or
repairs these machines, and every person
supervising any of these functions, must be
properly trained.

This Operator’s Manual provides a daily
inspection procedure that will help you keep
your TB 120 in good operating condition. Do
not perform other m aint enance unless you are
a TRAINED mechanic, QUALIFIED t o work on
the TB 120. Call QUALIFIED maint enance
personnel if you find problems or malfunctions.

Information contained in this manual concerns
only current TB 120’s, and the right is reserved
to make changes at any time without obligation.

RESPONSIBILITIES OF PARTIES



It is imperative that all owners and users of the
TB 120 read, understand, and confor m to all
applicable regulations. Ultimate com pliance to
OSHA regulations is the responsibility of the
employer using the equipment.

For additional information, contact your local
dealer, or write:

Snorkel International, I nc.
P.O. Box 1160
St. Joseph, MO 64502-1160 USA

http://www.snorkelusa.com

ANSI Standard A92.5 identifies r equirements of
all parties who might be involved with Boom­Supported Elevating Work Platf or m s .

A reprint of the “

Dealers, Owners, Users, O per at ors, Lessors
and Lessees of ANSI/SIA A92.5-1992 Boom­Supported Elevating Work Platf o r m s

available from Snorkel dealers or from the
factory upon request.

Copies are also available from:
Scaffold Industry Association

20335 Ventura Blvd. Suite 310
Woodland Hills, CA 91364- 2471 USA

Manual of Responsibilities for

” is

vi

P/N 0191482

1. SAFETY

1. SAFETY

SAFE OPERATION



The following safety inf o r m a t ion is vitally
important for safe operation of the TB 120.
Failure to follow these instructions can result in
personal injury or DEATH.



Pre-start Inspection



Prior to each shift, t he TB 120 shall be given a
visual inspection and function test. See the
“DAILY INSPECTION & MAINT ENANCE”
chapter in this manual for a list of items to
inspect and test.

Do not operate the TB 120 unless you are
trained and authorized, understand the operation
characteristics of the TB 120, and have
inspected and tested all functions to be sure t hey
are in proper working order. See the “DAILY
INSPECTION & MAINTENANCE” chapter.



Work Place Inspection and Practices



Do not use the TB 120 as a ground for welding.
Ground to the work piece.

Before the TB 120 is used, and during use,
check the area in which the TB 120 is to be used
for possible hazards such as, but not limited t o:

• drop-offs or holes,

• side slopes,

• bumps and floor obstructions,

• debris,

• overhead obstructions and electrical

conductors,

• hazardous locations,

• inadequate surface and support to withstand

all load forces imposed by the aerial platform
in all operating configur at ions,

• wind and weather conditions,

• presence of unauthorized persons,

• other possible unsafe conditions.

Before using the aerial plat form in any hazardous
(classified) location, make cer tain it is approved
and of the type required by ANSI/ NFPA 505 for
use in that particular location.

A recommended safety practice is to have
personnel that are trained in the operation of the
emergency controls working in the imm ediat e
area of the TB 120 to assist the platform
operator in the event of an emerg ency.

When moving the platform, check t he clear ance
around the TB 120 to avoid contact with
structures or other hazards. Always look in the
direction of motion.

Keep ground personnel from under t he platform
when the platform is raised.

Secure all accessories, containers, tools, and
other materials in the platform to prevent them
from accidentally falling or being kicked off the
platform.

Remove all loose objects stored in or on the
machine, particularly in the platfo r m . Rem o ve all
objects which do not belong in or on the
machine.

Do not engage in any form of “horseplay” or
“stunt driving” while operating the TB 120.

Do not permit riders on the machine anyplace
other than on the platform .

When other moving equipment is in the area,
take special precautions to comply to local
regulations regarding warnings.

Never steady the platform by positioning it
against another platfor m .

Do not operate a TB 120 that is not functioning
properly, or has been damaged, until the
machine has been repaired by a qualified
maintenance person.

Do not operate a TB 120 that does not have all
its decals and placards attached and legible.

Drive the machine with care and at speeds
compatible with conditions. Use extra caution
when driving over rough ground, on slopes, and
when turning.

Know and understand the job site traffic-flow
patterns and obey the flagmen, r oad signs, and
signals.

Watch for bystanders and never allow anyone to
be under, or to reach through, the machine and
its equipment while operating.

Use the recommended transport device when
loading the machine.

P/N 0191482

1 - 1

1. SAFETY



Electrocution



The TB 120 is an all-metal boom, NO N­INSULATED, aerial work-platform. Do not
operate it near ELECTRICAL conductors.
Regard all conductors as being energized.

Do not carry loads from any point outside of t he
platform.

Care shall be taken to prevent rope, elect r ic
cords, and hoses from becoming entangled in
the aerial platform.

Do not operate outside during a thunderst or m.



Tipover & Falling Hazards



Do not operate a TB 120 from a posit ion on
trucks, trailers, railway cars, floating vessels,
scaffolds, or similar equipment unless the
application is approved in writing by Snorkel.

If the platfor m or elevating assembly becomes
caught, snagged, or otherwise prevented from
normal motion by an adjacent structure or other
obstacles such that control reversal does not f r ee
the platform, r em o ve all personnel from the
platform before attempts are made to f r ee the
platform using gr ound controls.

Under normal working conditions it is best not to
transfer from the platform to another st r ucture or
vice versa, unless that is the safest way to do the
job. Each situation must be judg ed separ at ely
taking the work environment into account . The
following guidelines apply:

Where possible, place t he work platform

•

over a roof or walking structur e t o do the
transfer.

Transfer your anchorage from one structure

•

to another before you step across.

Remember that you might be transferring to

•

structure where
required.

personal fall arrest

is

Maintain a firm footing on t he platform floor .
Climbing on the guardrails is prohibited.

Do not use ladders, planks, or other devices to
extend or increase your work position from the
platform.

Do not jerk the controls. Move the controls slowly
and deliberately to avoid jerky and erratic
operation. Always stop the controls in the neutral,
off, position before going in the opposite
direction.

Do not use the boom for any purpose other than
to position personnel, their tools, and materials.

Do not use the TB 120 as a crane, hoist, or j ack.
Do not operate the TB 120 in winds, or wind

gusts, of 28 mph (45 km/h) or more.
Do not add anything to the TB 120 that will

increase the wind loading (billboards, banners,
flags, etc).



Crushing



Always look in the direction of travel. Avoid
overhead obstructions.

Never cover the floor grating or ot her wise
obstruct your view below.

Make sure the area below the platform is f r ee of
personnel before lowering.

Use the platform entrance, do not climb over

•

the rails.

All platform occupants MUST wear a fall r estraint
device connected to a lanyard anchor point.

Do not exceed the unrestricted platfor m capacit y
shown on the platform.

Do not raise the boom if the T B 120 is on soft
ground. Operate the boom only on a f ir m sur face
capable of withstanding all load forces imposed
by the aerial platform in all operat ing conditions.

Raise the platform only when the TB 120 is on
level ground.

1 - 2



GENERAL SAFETY PRECAUTIONS



Personnel Precautions



If you encounter any suspected malfunction of
the aerial platform, or any hazard or pot entially
unsafe condition relating to capacity, int ended
use, or safe operation, cease operat ion and seek
assistance from management.



Operator General Precautions



Make sure that all protective guards, cowlings,
and doors are in place and secure.

Be sure the guardrail system, including t he gate,
is in place and secure.

P/N 0191482



Mounting & Dismounting Precautions



Use three points of support (e. g., two hands and
one foot) when getting on or off the platfor m.

1. SAFETY

Use extreme caution when removing radiator
caps. Park the machine and let it cool down
before opening a pressurized compartment.

Keep the platform clean.
Do not jump off t he m achine.
Do not dismount while the machine is in motion.



Starting and Stopping Precautions



Do not start until all personnel are clearly away
from the machine.

Before leaving the operator’s stat ion, place the
machine in the stowed position.

When leaving the m achine par ked or
unattended, remove the starter key from the

MASTER KEY SWITCH

switch to OFF, then lock the



Operating Precautions



Do not modify the TB 120 in any way.
When parts or com ponents are replaced, they

shall be identical or equivalent to original Snor kel
parts or components.

Do not override any of the safety feat ur es of the
TB 120.

Limit travel speeds according to conditions. Take
into account: grade, surface, congestion,
visibility, side slope, location of personnel, and
other hazards.



Operator Maintenance Precautions



Do not use your hand to search for hydraulic oil
leaks. High pressure hydraulic oil can easily cut
and penetrate your skin — a very serious injury
that requires immediate at t ention by a medical
specialist trained in that type of injur y. Use a
piece of cardboard or wood to search for
hydraulic oil leaks.

Do not attempt repairs unless you are trained.
Refer to manuals and experienced repair
personnel for help.

Charge batteries in a well-ventilated area free of
flame, sparks, or ot her hazards t hat might cause
fire or explosion.

, set the

BATTERY

BATTERY

switch.



Fuel Handling Precautions



Do not smoke or permit open f lam es while
fueling or near f ueling operations.

Never remove the fuel cap or refuel a g asoline
engine while the engine is running or hot. Never
allow fuel to spill on hot machine components.

Maintain control of the fuel filler nozzle when
filling the tank.

Do not fill the fuel tank to capacity. Allow room
for expansion.

Clean up spilled fuel immediately.
Tighten the fuel tank cap securely. If the f uel cap

is lost, replace it with an approved cap from
Snorkel. Use of a non-approved cap without
proper venting may result in pressurization of the
tank.

Never use fuel for cleaning purposes.
For diesel engines, use the correct fuel grade for

the operating season.



SAFETY DECALS & PLACARDS

There are several safety decals and placards on
the TB 120. Their locations and descriptions are
shown in this section. Take time to study them.

Be sure that all the safety decals and placards
on the TB 120 are legible. Clean or replace them
if you cannot read the words or see the pictures.
Clean with soap & water and a soft cloth. Do not
use solvents.

You must replace a decal or placard if it is
damaged, missing, or cannot be r ead. If it is on a
part that is replaced, make sur e a new decal or
placard is installed on the replaced part. See
your Snorkel dealer for new decals and placards.

Refer to PLACARDS AND DECALS
INSPECTION CHARTs and DRAWINGs in the
“DAILY INSPECTION AND MAINT ENANCE”
chapter for part number s, locat ion, and r equired
quantities of all placards and decals.

P/N 0191482

1 - 3

1. SAFETY

Refer to PLACARDS AND DECALS INSPECTION CHART and DRAWING in the “DAILY
INSPECTION & MAINTENANCE” chapter for part numbers, locations, and required
quantities of all placards and decals.

1 - 4

P/N 0191482

1. SAFETY

P/N 0191482

1 - 5

1. SAFETY

1 - 6

P/N 0191482

For emergency operation controls and
procedures, see the “EMERGENCY
OPERATION” chapter in t his m anual.

The devices listed in this chapter are safety
devices. They are on a TB 120 to increase safety
in the work place for both the operat or and ot her
people near a TB 120. Do not by-pass, disable,
modify, or ignore any of these devices. Check
them carefully at the start of each work shift to
see that they are in working order (see “DAI LY
INSPECTION & MAINTENANCE” chapter) . I f
any is found to be defective, remove the TB 120
from service immediately until a q ualified service
technician can make repairs.

DRIVING LIGHTS (option)



2. SAFETY DEVICES



EMERGENCY STOP

At the ground-control box: Press the red
EMERGENCY STOP button in, at any time,

under any conditions, and the entire machine
stops, the engine turns of f, the brakes
automatically set, and nothing moves. This
switch must be pulled out for anything on the T B
120 to work.

2. SAFETY DEVICES

SWITCHES

Two 30 watt headlights are located on top of the
front cowling.

Two 25 watt blinking taillights are on the sides of
the rear cowlings. Driving light s help im pr ove
your visibility and help others see you when you
are driving on dimly lit construction sites. Dr iving
lights are not for driving on public t hor oughfares.

For more informat ion about dr iving lights see the
“OPTIONS” chapter .

At the platform-control box: Press the large
red EMERGENCY STOP button down and the
entire machine stops, the engine tur ns off, the
brakes automatically set, and nothing m oves.
This switch must be pulled to its up (out) position
to control the TB 120 from the platform.

NOTE: The ground- control box is designed to
override the platform-control box. If the
platform-control box EMERGENCY STOP
button is down (off) the g r ound-control box
can still be used to start and operate the T B

120.

P/N 0191482

2 - 1

2. SAFETY DEVICES

EMS LIGHTS & AUDIO ALARMS



There are six envelope management system
(EMS) lights on a TB 120.

Three are on the instrument panel.

whether or not the envelope management
system is operating correctly.

NOTE: EMS lights on the platform-control box
have the same names as those on the
instrument panel even though they are not
labeled on the platform-control box.

In addition to EMS lights there are EMS audio
alarms.

A second identical set of three is on the platform­control box.

Two are above the instrument panel.

Two are on the bottom of the platform-control
box. The audio alarms emit various sounds to
alert the operator to unsaf e condit ions. The audio
alarms and EMS lights work toget her t o give
valuable safety information. The t able below
summarizes that information.

EMS ENVELOPE

The
information about where the platf or m is located
relative to the platform’s working envelope. ( See
the “SPECIFICATIONS” chapt er for the TB 120
working envelope.) The

EMS WARNING

lights (1) give the operator

EMS STATUS

lights (3) tell the operator

(2) and

2 - 2

NOTE: When a TB 120 engine first st arts, the
EMS self-test will briefly sound all EMS audio
alarms and briefly turn all six EMS lights on to
check that they work. Af ter the brief EMS self­test, conditions in the table below prevail.

P/N 0191482

2. SAFETY DEVICES

EMS TABLE

LIGHT CONDITION AUDIO ALARM

GREEN

EMS

STATUS

WHITE

EMS

ENVELOPE

RED

EMS

WARNI NG

ON

: Machine is ready for normal operation.

FLASHING

technician.

OFF

: Platform is well inside the working envelope.

FLASHING

working envelope.

ON

: Platform is at t he limits of the working envelope.

ON

: EMS error detected. Press the red

light completely in and release it

WARNING

procedures described in the “EMERGENCY
OPERATION” chapter t o lower t he plat form.

FLASHING

envelope. Move boom into working envelope.

: Calibration error. Notify qualified service

DO NOT USE MACHINE

: Platform is less than 3 feet (1 m) inside the

light stays on, use the emergency

: Platform is outside t he lim its of the working

.

slowly

EMS WARNING

. If the red

None.

None.

None.

None.

None.
Continuous tone.

EMS

Beeping

EXTENDIBLE-AXLE INTERLOCKS



The left and right r ear axles of a TB 120 must
be extended and locked for safe-work ing
machine stability. The booms cannot be raised
or extended unless the axles are completely
extended and locked into place. Instructions for
extending and locking the axles are given in the
“OPERATION” chapter .

FLASHING LIGHTS



The flashing lights alert people that the TB 120
is present. The lights flash at about one flash
per second anytime the engine is running.
There is no ON/OFF switch for the flashing
lights.

(option)

P/N 0191482

2 - 3

2. SAFETY DEVICES

 FOOT SWITCH

DANGER

Serious injury can result from sudden
stops. To avoid sudden stops, do not
remove your foot from the foot switch w hi l e
the TB 120 is in motion.

The foot switch prevents the platf or m from
moving if something accidentally pushes one of
the platform-moving controls on the platform­control box. (Stepping on the foot switch is an
action that must be performed, at the same
time as another, to make t he plat form move.)

NOTE: See “ELECTRI CAL O UTLET AT
THE PLATFORM (GFCI)” in the
“OPERATION” chapter for more infor mation
about how to use the GFCI.

 GRAVITY GATE

The gravity gate (1) is the place in the platform
guardrail system where you should enter and
leave the platform. Raise the gate and step
under it onto the platform . Once you have
entered the platform and at tached your fall
restraint lanyard to an anchor point (2), check
to see that the gravity gate (1) has fallen back
into place.



GROUND OPERATION

SWITCH



GFCI OUTLET

The GFCI (Ground Fault Circuit Interrupt)
protects against electricity flowing to ground.
When electricity flows to ground the GFCI shuts
off power to the electrical outlets.

To use the outlets, connect the power-input
connector, inside the left-r ear of the turntable,
to a source of 125 V ac, 15 A electrical power.

NOTE: If the TB 120 has the optional ac
generator, plug the power-input connect or
(inside the left-rear of the turntable) into the
generator. Then, set the

MACHINE/GENERATOR

platform-control box, to GENERATOR.

switch, on the

The

GROUND OPERATION

the platform from moving if somet hing
accidentally pushes one of the platform-moving
switches at the ground-control box. (Manually
holding the
is an action that must be performed, at the
same time as another, to mak e t he platform
move.)

GROUND OPERATION

switch prevents

switch up

42 -

P/N 0191482

GUARDRAILS



The guardrails help protect you f r om falling off
the platform. Be sure t he guardrails are
properly installed and that the gate is in place.

HORN



2. SAFETY DEVICES

LANYARD ANCHOR POINTS



All personnel on the platform shall connect their
fall restraint lanyards to one of the lanyard
anchor points.

MOTION ALARM (option)



The motion alarm emits a loud beeping sound
at ground level anytime the
controller is in FORWARD or REVERSE. This
alarm alerts people on the ground that the TB
120 is traveling along the ground.

DRIVE/STEER

The operator
the attention of people on the g round when you
are working aloft. The horn itself is located
below the tilt alarm sensor, it is the sam e horn
used to sound the tilt alarm. For the horn to
work the
following switches, on the ground-control box,
must be set as indicated:

SELECTOR SWITCH
EMERGENCY STOP
MASTER KEY SWITCH

HORN t

BATTERY

is used primarily to get

switch must be ON and the

..........PLATFORM

...............pulled out

....................ON

PLATFORM WORK LIGHTS (option)



The platform work lig ht s are located on top the
platform guard rail. Use the lights to impr ove
visibility when you are working aloft in dimly lit
areas. Do not use the platform work lights to
drive on public thoroughfares.

P/N 0191482

For more informat ion about platform work lights
see the “OPTIONS” chapter .

5 2 -

2. SAFETY DEVICES

SELF-CLOSING GATE (option)



The self-closing g ate is designed to
automatically close after you enter or leave the
platform. It helps prevent people from falling off
the platform.

TILT-ALARM HORN, SIREN, & LIGHT



There is one tilt-alarm sir en, one tilt-alarm horn,
and one tilt-alarm warning light on a TB 120.

The tilt-alarm warning light is on the platform ­control box.

The siren will emit a two-toned sound (high-low­high-low...) if the TB 120 is tilted more than 3.5
(7 inch rise in 10 foot run / 18 cm rise in 3 m
run) and the booms are above horizontal or
extended more than 7 feet (2 m). The warning
light will come on and the horn will emit a
continuous sound at the same time the siren
sounds.

NOTE: The platf o r m siren will not sound if
the TB 120 is being controlled fr om the
ground-control box.

°

The siren (1) is located under the platform­control box.

3

After the siren and/or hor n begins to sound, if
the tilt continues to increase, the TB 120 can tip
over. When you are in contr ol of a TB 120 and
you hear either of these two warning sounds, or
see the warning light come on, you should
immediately:

1. Stop using the
on the platform-control box.

2. Completely retract and complet ely lower the
booms.

3. Use the platform-control box
controller to move the TB 120 to a level surface
or more firm gr ound before extending or raising
the booms again.

DRIVE/STEER

controller stick

DRIVE/STEER

2

The horn (2) is located inside the left-rear of the
turntable, under the tilt alarm sensor (3).

62 -

P/N 0191482

3. SPECIFICATIONS

3. SPECIFICATIONS

The Snorkelift T B 120 is a boom - s uppor t ed
elevating work-platfor m built to conform to the
following standards:

OSHA Paragraph 1910.67 Title 29, C.F.R.,
Vehicle-Mounted Elevating and Rotating Work
Platforms - Labor.

OSHA Paragraph 1926.556 Title 29, C.F.R.,
Aerial Lifts - Construction.

ANSI Standard A92.5-1992, Boom-Suppor ted
Elevating Wo r k Platforms.

GENERAL SPECIFICATIONS



Working height (nominal).....126 ft - 0 in (38.4 m)

Platform height ( maximum)..120 f t - 0 in (36.6 m)

Platform reach (maximum).....62 ft - 0 in (18.9 m)

Length

(booms down and retracted)..42 ft - 4 in (12.9 m)

Width:

axles retracted.........................8 ft - 6 in (2.6 m)

axles extended.....................12 ft - 10 in (3.9 m)

Height (booms down)...............10 ft - 0 in (3.0 m)

Wheelbase...............................12 ft - 0 in (3.7 m)

Ground clearance ...........................13 in (33 cm)

Tailswing:

rear axles stowed ....................6.54 ft (1.99 m)

rear axles extended.................4.38 ft (1.33 m)

Weight (approximate)......... 39,500 lb (17,917 kg)

Ground pressure, max..

Wheel load, max. single..... 19,750 lbs (8,977 kg)

Travel speeds (max.) (See “CONTROLS”
chapter for explanation of sett ings for diff er ent
speeds.):

booms down and retracted

high speed, low torque ......3.0 mph (4.8 km/h)

mid speed, mid torque.......1.5 mph (2.4 km/h)

high torque, low speed ....0.75 mph (1.2 km/h)

booms up and/or extended

to mid elevation...............0.75 mph (1.2 km/h)

above mid elevation................................creep

Gradeability ...................................................25%

.................87

psi

(600 kPa)

Turning radius

outside................................33 ft - 0 in (10.0 m )

inside, axles retracted............22 ft - 0 in (6.7 m)

inside, axles extended...........20 ft - 0 in (6.1 m)

Tires (foam filled)

..............18 x 22 in (46 X 56 cm), 18 ply or radial

Electrical system. . .12 V dc (neg. chassis ground)
Environmental operating ranges:

ambient air temperature ..............0°F to +110°F

(-18°C to +43°C)
wind speed

(maximum gust or steady).....28 mph (45 km/h)

Fuel tank capacity:

std. gasoline/diesel........ 40 gal USA (151 liters)

optional LPG.......................43.5 lb USA (20 kg)

Hydraulic oil:

tank capacity ................. 60 gal USA (227 liters)

maximum temperature (at tank)... 200°F (93°C)

system capacity............. 90 gal USA (341 liters)

maximum pressure........ 2,800 psi (19,320 kPa)

Hydraulic oil recommended:
above 10°F (-13°C) Mobil DTE 13M (ISO VG32)
below 10°F (-13°C) Mobil DTE 11M (ISO VG15)

Boom elevation...................+75°/-1° to horizontal

Boom movement times in seconds (complete
range of movement):

Turntable Swing

360° CW or CCW,

boom retracted.................110 - 120 seconds

boom extended................320 - 330 seconds

Platform Rotation

180° CW or CCW,..................16 - 20 seconds

Main Boom Elevation

UP (boom retracted).............90 - 120 seconds

UP (boom extended)...........150 -180 seconds

DOWN (boom retracted) .....90 - 120 seconds

DOWN (boom extended).....150 -180 seconds

Boom Extension

OUT...................................130 - 160 seconds

IN.......................................130 - 160 seconds

PLATFORM SPECIFICATIONS



Unrestricted rated work load (total weight of personnel, tools,

SIZE

PLATFORM

standard aluminum 30 x 92 (76 x 234) Rated work load: 500 lbs (227 kg)

P/N 0191482

inches (cm)

and materials that the platform is designed to carry above its
floor when the platform is within its working envelope -- same
as UNRESTRICTED PLATFORM CAPACITY)

Rated number of occupants: 2 people

3 - 1

3. SPECIFICATIONS

ENGINE DATA



ENGINE MAKE CONTINENTAL CONTINENTAL CUMMINS

MODEL TM27 4B3.9
FUEL gasoline LPG diesel
FUEL GRADE unleaded

85 octane
(motor method)

COOLANT 50% water + 50% ethylene glycol
OPERATING TEMPERATURE

OIL SUMP CAPACITY 6 qt USA
OIL FILTER CAPACIT Y 1 qt USA
OIL GRADE API: SE, SF, SE/CD, SF/CD API: CE/SF, CD/SF

OIL W EI G HT see chart below see chart below
RUNNING TIME One full tank of gasoline or diesel will last an entire eight hour shift,

ENGINE OIL CHARTS



180°F - 202°F
(81°C - 94°C)

(5.7 liters)
(0.95 liters)

under normal working conditions. It nor mally takes between one and
two tanks of LPG per eight hour shift.

HD5
Gas Processors
Association Standard
2140
Category: special
duty propane

ASTM No. 2 D
Cetane # > 40
(For operating temp.
below 32°F / 0°C use
“winterized” No. 2 D.)

141°F - 211°F
(60°C - 100°C)
10 qt USA
(9.5 liters)

CONTINENTAL ENGINE CUMMINS ENGINE

3 - 2

P/N 0191482

OVERALL DIMENSIONS



3. SPECIFICATIONS

P/N 0191482

3 - 3

3. SPECIFICATIONS

WORKING ENVELOPE



3 - 4

P/N 0191482

3. SPECIFICATIONS

SERIAL-NUMBER LOCATIONS



Serial Numbers are located in five places.

1. Above the ground-control box on a placard.
(The last four digit s ar e month and year
shipped.)

2. On the back-right of the counterweight.

CHASSIS NOMENCLATURE



TURNTABLE & BOOM



NOMENCLATURE

3. On a placard on the platform br ace, above
the platform anchor points. ( Last four digits are
mo. and yr. shipped.)

4. Below the drain hole in the turntable.

5. At the weld behind the rotation bearing tur r et .

NOTE: If t he t urntable is rotated 180° its
FRONT is above the REAR of the chassis.

P/N 0191482

3 - 5 (3 - 6 blank)

3 - 5

4. GAUGES

4. GAUGES

AMPS



The AMPS g auge shows the electric current
from the alternator t o the batteries. When the
engine is running, the needle in the AMPS gauge
should not be to the left of “ 0. ” Under normal
operating conditions, after the engine has been
running for a few minutes, this gauge should
read “0.”

 ENGINE OIL

CONTINENTAL CUMMINS

CONTINENTAL CUMMINS

4

3

Engine oil level should always be in the cross­hatched area (3) (4) of t he dipst ick — never
above or below it. Check the oil level after the
engine has been turned off a few minutes so that
oil can run down out of the engine into the sump.

FILTER MINDER



2

Engine oil level is measured with a dipstick (1)
(2). Oil sump and oil filt er capacities given in the
“SPECIFICATIONS” chapt er are approximate.
True values may vary from machine to machine
due to slight variations or modifications dur ing
production. The oil dipstick is the only way to
accurately gauge if the engine oil level is correct.

The air filter g auge (1) (FILTER MI NDER) is
located just above the ground-control box. T he
gauge measures the vacuum (air pressur e)
between the intake manifold and t he air filter. As
the filter clogs, t he vacuum increases (pressure
drops). As the vacuum increases, the yellow
indicator (2) raises toward the red area (3) of the
sight glass. When the yellow indicator reaches
the red, it’s time to chang e the air filter.

The indicator (2) stays at its highest setting, it
does not go to the bottom of the sight glass
when the engine is turned off. After the f ilter is
changed, press the small RESET button (4) t o
reset the indicator disk to the bottom of the sight
glass.

P/N 0191482

4 - 1

4. GAUGES

 FUEL

4

The fuel gauge (1) is locat ed on top of the
gasoline or diesel fuel tank (2), inside the front­right of the tu r nt able. Read it at the line (3) in the
clear plastic window (4). It reads in fractions-of-a­full-tank. T he t ank shown is a little more than 1/4
full.

NOTE: Do not run a diesel fuel tank dry. Air in
the fuel line makes a diesel engine hard to
start.

3

1

2

1

HOURS



The

HOURS

It accumulates time when:

BATTERY
SELECTOR SWITCH
MASTER KEY SWITCH

Or when:

BATTERY
SELECTOR SWITCH
ANTI-RESTART
MASTER SWITCH

The

HOURS

when it is time to perform t he periodic
maintenance listed in the Maintenance Manual.

gauge is basically an electric clock.

........................ ON

...... GROUND

.. ON.

........................ ON

...... PLATFORM

......... ON.

gauge cannot be reset. Use it t o t ell

2

(OPTION - LPG) LPG t anks have two fuel
gauges (1) (2) on top. One measures correctly
when the tank is standing on end (
the other measures correctly when the tank is
laying down (
fractions-of- a- full-tank. TB 120 t anks are
mounted horizontally. Therefore, you should read
the

HORIZONTAL

HORIZONTAL

scale (2).

). Both read in

VERTICAL

)

 HYDRAULIC OIL FILTER

The hydraulic-oil filter g auge (1) is located above
the hydraulic-oil filter (2) . The gauge measures
pressure into the filter. As the filter clogs, the
pressure goes up.

4 - 2

P/N 0191482

The hydraulic-oil filter g auge should only be read

)

by qualified trained maintenance personnel. An
accurate reading requires very special conditions
and should not be attempted by operators.

 HYDRAULIC OIL LEVEL

TEMPERATURE



4. GAUGES

The hydraulic-oil level gauge (1) is on the side of
the hydraulic oil tank. It shows the actual level of
oil inside the tank. Read it only when the booms
are completely down and completely retracted.
Otherwise, the lift and/or extend cylinders
become large reservoirs for hydraulic oil and t he
oil level in the tank will be low. The oil level (2)
should be between the high mark (3) and low
mark (4).

 HYDRAULIC OIL TEMPERATURE

The

TEMPERATURE

above the ground-control box. It shows the
temperature of the water- ant ifreeze mixture in
the engine block. The typical operating­temperature range for a Continental engine is
180°F to 202°F (81°C to 94°C); for a Cum m ins
engine, 141°F to 211°F (60°C - 100°C).

gauge is located just

The hydraulic-oil temperature gauge (1) is inside
the hydraulic-oil level gauge. It m easur es t h e
temperature of the oil in t he t ank (2). The
temperature should not exceed 200°F (93°C). If it
does, reduce your driving speed or stop the TB
120 to let the hydraulic oil cool.

P/N 0191482

4 - 3 (4 - 4 blank

4 - 3

AUTOMATIC SHUT-OFFS



5. AUTOMATIC SHUT-OFFS

5. AUTOMATIC SHUT-OFFS

& CIRCUIT BREAKERS



Engine Oil Pressure



There is a light inside the
switch at both the ground-control box and the
platform-control box.

The lights come on if the engine temperature,
engine oil pressure, or alternator cur r ent gets
outside preset values. W hen the EMERGENCY
STOP light comes on, immediately lower the
platform and correct t he pr oblem. Use
EMERGENCY POWER OPERATION to lower
the platform to the ground if the engine has
automatically shut off. Use EMERGENCY

BLEED DOWN only if EMERGENCY POWER
OPERATION does not work (see “EMERGENCY

OPERATION” chapter for instructions).

EMERGENCY STOP

If the engine oil pressure in eit her a Continental
or Cummins engine drops to an unsafe level, t he
lights in the EMERGENCY STOP switches come
on and the engine automatically shuts off. Check
engine oil level (see “DAILY INSPECTIO N &
MAINTENANCE” chapter) before you tr y to
restart the engine. If the engine oil is low,
replenish it then check for leaks. Check the
engine oil filter to be sur e it is in place and t ight.
If the engine will not restar t , or if it automat ically
shuts off a second time, r efer the problem to a
qualified service technician.



Alternator Not Charging



If the alternator on eit her a Continental or
Cummins engine fails, the lights in the
EMERGENCY STOP switches come on. The TB
120 will continue to run until the batteries g et t o o
weak to work, then the engine will automat ically
shut off. Check the alternator drive belt to see if it
is broken or loose before you try to rest ar t the
engine. If the eng ine will not r est ar t, or if it star t s
but the EMERGENCY STOP light is still on, refer
the problem to a qualified service technician.



CIRCUIT BREAKERS



Engine Temperature



If the engine temper at ur e ( c heck the
TEMPERATURE gauge) of either a Continental
or Cummins engine reaches 210°F (99°C) the
lights in the EMERGENCY STOP switches will
come on. If the engine t em perature continues to
climb to 230°F (110°C) the engines will
automatically shut off and cannot be restarted
until they cool. Check engine coolant level (see
“DAILY INSPECTION & MAINT ENANCE”
chapter) before you try to restar t the engine. If
the coolant is low, replenish it then check for
leaks. If the engine will not restart, or if it
automatically shuts off a second tim e, r efer the
problem to a qualified service technician.

There are 11 circuit breaker s on a TB 120. Their
purpose is to protect electrical circuit s from
electrical overloads.

Three are on the platform-control box.

P/N 0191482

5 - 1

5. AUTOMATIC SHUT-OFFS

Four are on the ground-control box.

The tenth circuit breaker is on the side of the
GFCI outlet box.

If any of these circuit breakers pops out, as
shown here,

One is on the junction wiring box assembly.

One is inside the junction wiring box assembly.

push it back in. If it pops out again, there is a
problem in its electrical circuit and the T B 120
should be removed from service immediately and
remain out of service until it is r epair ed by a
qualified service technician.

NOTE: Do not open the junction-wiring box
assembly to check the one breaker inside
unless the following occurs: the

EMERGENCY STOP

switch on the ground­control box is pulled out (on), but when you
turn the

MASTER KEY SWITCH

to on, neither
the EMS lights nor the EMS alarm comes on
for their self test. If neither the lights nor
audible alarm comes on, open the box and
check the breaker. If it has popped out, press
it in then try to start the eng ine.

When a circuit br eaker trips that will not reset,
immediately attempt to lower the platform to the
ground by using normal operating pr ocedur es. If
normal procedures do not work, use emergency
procedures (described in the “EMERGENCY
OPERATION” chapter of this manual) to lower
the platform.

5 - 2

The 11th circuit breaker is t he GFCI, discussed
in the “SAFETY DEVICES” chapter.

P/N 0191482

This chapter explains what each control does.
This chapter does not explain how to use the
controls to produce useful work: r efer to the
“OPERATION” chapter for that, aft er you have
read this chapter.

The only optional equipment discussed in this
chapter is the control for dual- fuel. For other
optional equipment controls, see the “ OPTIONS”
chapter.

6. CONTROLS

6. CONTROLS

The names of the controls on t he t op of the
platform-control box (6) are shown on decals (7)
(8) below the box.

11

10

The main operating funct ions of a TB 120 can be
controlled from the ground-control box (1) or the
platform-control box (2).

The names of the different controls on the
ground-control box (3) are shown on a decal (4)
on the inside of the door (5). The decal also
shows the names of the differ ent settings to
which each control can be set.

Controls (9) for operat ing the jack and extendible
axles are on the rear of the chassis (11) along
with the axle interlock (10).

See the “EMERGENCY OPERATION” chapter
for the locations of emer gency bleed down
controls and for correct em er gency bleed down
procedures.

P/N 0191482

6 - 1

6. CONTROLS

GROUND-CONTROL BOX



Controls for operating the TB 120 from the
ground are located on the right side of the
turntable behind the small door.

NOTE: The number of each cont rol below
corresponds to the control’s call-out on the
next page.

EMERGENCY STOP

1.
at any time, under any conditions, and the entire
machine stops — the engine turns of f, the
brakes set, and nothing moves. This switch must
be out for anything on the machine to work .

EMERGENCY POWER OPERATION

2.
engine stops and cannot be restarted,
continuously holding this switch down activates a
small, battery-powered hydraulic-pump that
supplies emergency hydraulic power for the
machine. Boom movements will be slow and
have long lag times under EMERGENCY
POWER OPERATION.

SELECTOR SWITCH

3.
GROUND position for the ground-control box to
work. Must be in the PLATFORM position for the
platform-control box to work.

BOOM SPEED

4.
fast the main boom moves in, out, up, or down.
Set it to SLOW until you are very familiar with the
way the machine works or if the platf or m is
working in dangerous or cramped surr oundings.

GROUND OPERATION

5.
hold this switch up any time you use one of the
five platform-moving switches (see box at right)
to move the platform. Holding the switch up
increases the engine speed and activates the
platform-moving switches in preparation to do
work.

: Press the red button in,

: If the

: Must be in the

: This control determines how

: You must manually

ENGINE THROTTLE

7.
LO unless you need to warm the engine and
hydraulic oil up fast. Return to LO after warm-up.

BOOMS/AXLES SWITCH

8.
be up (BOOMS) for the booms to move. I t m ust
be down (AXLES) anytime you use the AXLES
controls, on the top-rear of the chassis, to move
the jack or the rear axles.

: Leave the switch set to

: This switch must

9 through 13 are the platform-moving switches.
Each is a three position, momentary contact,
normally-off switch.

PLATFORM LEVEL

9.
up relative to the end of the tip boom. DN ( down)
rotates the platform down.

PLATFORM ROTATION

10.
platform clockwise (as seen fr om above) r elat ive
to the end of the tip boom. CCW rotat es t he
platform counterclock wise.

TURNTABLE SWING

11.
turntable clockwise (as seen from above). CCW
rotates the turntable counterclockwise.

MAIN BOOM LIFT

12.
boom. DN (down) lowers the base boom.

MAIN BOOM EXT./RET.

13.
the booms. RETRACT retracts the booms.

14. (OPTION ­engine set the FUEL switch to GASOLINE or
L.P.-GAS depending on which you want to use. If
you select L.P.-GAS be sure to open the valve
on top the LP gas tank. T o switch fuels with the
engine running, see the DUAL FUEL SYSTEM
decal on the inside of the ground-cont r ol box
door.

FUEL

: UP rotates the platform

: CW rotates the

: CW rotates the entire

: UP raises the base

: EXTEND extends

): Before starting a dual- fuel

MASTER KEY SWITCH

6.
like an automobile ignition switch. Hold it at
START until the engine starts then release it to
ON. If the engine dies in ON, the key must be
turned to OFF before it will go back to START.

NOTE: On some machines you might have to
pause about three seconds in the ON position
before going to ST ART so the starter can
engage.

Turn the MASTER KEY SWITCH to O FF if the
platform is to stay in one position f or a long time,
that will turn the engine off and save fuel.

: This switch works

6 - 2

P/N 0191482

6. CONTROLS

P/N 0191482

GROUND-CONTROL BOX

6 - 3

6. CONTROLS

PLATFORM-CONTROL BOX



Controls for operating the TB 120 from the
platform are located on the platform-control
box, with the exception of the yellow foot switch
which is on the platform floor.

NOTE: The number of each cont rol below
corresponds to the control’s call-out on the
next page.

EMERGENCY STOP

1.
button down at any time, under any conditions,
and the entire machine stops — the engine
turns off, t he br akes automatically set, and
nothing moves. This switch must be pulled to its
up (or out) position if t he TB 120 is to be
controlled from the platform.

EMERGENCY POWER OPERATION

2.
engine stops and cannot be restarted, hold t he
switch toward you and a small, battery-powered
hydraulic-pump comes on to supply power for
the machine. Boom movements will be slow
and have long lag times under EMERGENCY
POWE R.

ENGINE THROTTLE

3.
on LO unless you want to
speed (see DRIVE RANGE below).

PLATFORM ROTATION

4.
platform clockwise (as seen fr om above)
relative to the end of the tip boom . CCW
rotates the platform count erclockwise.

PLATFORM LEVEL

5.
up relative to the end of the tip boom. DN
(down) rotates the platform down.

DRIVE RANGE

6.
HIGH RANGE SPEED SELECTOR VALVE that
is on top of the chassis near the rotat ion
bearing. Toget her with the posit ion of the main
boom, the switch and valve determine how fast
the TB 120 can travel along the ground. See
the DRIVE RANGE Table below for sett ings
and maximum speeds. Switching from LO to HI
changes the driving conditions from low speed
and high torque to the wheels to high speed
and low torque to the wheels.

: Press the large red

: If the

: Leave this switch set

drive

at maximum

: CW rotates the

: UP rotates the platform

: This switch works with the

DRIVE RANGE

MAX.

SPEED

3.0 mph

(4.8 km/h)

1.5 mph

(2.4 km/h)

0.75 mph

(1.2 km/h)

0.75 mph

(1.2 km/h)

creep -- --

NOTE: ENGINE T HRO TTLE, at the plat form­control box, must be set to HI for MAX. SPEED.

MAIN BOOM EXTEND/RETRACT

7.
extends the booms. RETRACT retract s the
booms. Speed of movement is proportional t o
how far you push the controller.

ANTI-RESTART MASTER SWITCH

8.
switch works like an automobile ignition switch.
Hold it at START until the engine starts then
release it to ON. If the engine dies in ON, the
key must be turned to OFF before it will go
back to START. Turn the switch to OFF if the
platform is to stay in one position f or a long
time, that will turn the eng ine off and save fuel.

HORN

9.

10. Foot Switch: You must step down on the
foot switch, and hold it down, any time you use
any platform control that causes t he plat form to
move. Stepping on the foot switch increases
the engine speed and activates other
switches/controls in preparation to do work.
(The foot switch is to the platform what the
GROUND OPERATION switch is to the ground­control box.)

DRIVE

RANGE

HI up stowed

HI down stowed

LO -- stowed

-- --

: See ”SAFETY DEVICES” chapter.

Table

HRSS

VALVE

boom

position

extended but

below mid-

elevation

above mid-

elevation

: EXTEND

: This

CAUTION

Prolonged driving in HI (3 mph, 4. 8 km/hr)
heats the hydraulic oil. Periodically check the
thermometer at t he hydraulic- oil tank sight­glass. Do not let the oil exceed 200°F (93°C).
Stop the engine and let the oil cool if
necessary.

6 - 4

P/N 0191482

6. CONTROLS

PLATFORM-CONTROL BOX

NOTE: On some machines you might have to
pause about three seconds in the ON position
before going to ST ART so the starter can engag e.

P/N 0191482

NOTE: Do not step on the f oot switch while
you are trying to start the engine.

6 - 5

6. CONTROLS



CHASSIS

1.

AXLES

:

11.

LIFT/SWING CONTROLLER

UP: Slowly push the LIFT/SWING controller
forward and the main-boom rises. T he further
forward you push the controller the fast er the main
boom rises.

DN: Same as UP only the main boom goes down.
CW: Slowly push the LIFT /SWING controller to the

left and the turntable swings clock wise (from
above). The further left you push the controller the
faster the turntable swings.

CCW: Sam e as CW only the tur ntable swings
counterclockwise.

12.

DRIVE/STEER CONTROLLER

DRIVE FORWARD: Slowly push the
DRIVE/STEER controller forward and the TB 120
moves forward. The further forward you push the
controller the faster t he TB 120 goes (max. 3 mph,

4.8 km/h).
DRIVE REVERSE: Same as DRIVE FORWARD

except the TB 120 moves backward.

:

:

RAISE: Lowers the jack (1), which raises the
chassis (4).
LOWER: Raises the jack, which lowers the
chassis.
EXTEND: Extends both rear axles (2) ( 3 ) .
RETRACT: Retracts both r ear axles.

NOTE: The axles extend or retract one at a
time, not simultaneously.

For the AXLES controls to work the
BOOMS/AXLES SWITCH must be set to AXLES
and the SELECTOR SWITCH set to G ROUND.
Also, the main boom must be down and retracted.

2.

HIGH RANGE SPEED SELECTOR VALVE

:

STEER RIGHT: Slowly push the DRIVE/STEER
controller to the right (and a little forward or
reverse to release the brakes) and the front
wheels move in the direction for a right-hand turn.
The longer you hold the controller to the r ight the
further the wheels turn.

STEER LEFT: Works the same as STEER RIGHT
only for a left-hand turn.

NOTE: The wheels stay the direction you turn
them, they do not automatically return t o cent er
the way automobile wheels do.

NOTE: There are blue and yellow arrows on top
of the chassis. The blue arrows point to t he
FORWARD end of the chassis and to the LEFT
side of the TB 120. The yellow arrows point to
the REVERSE end of the chassis and to the
RIGHT side of the TB 120. The
controller is color coded to match the arrows.
The color coding is designed to keep you from
becoming disoriented when you are aloft and
the platform is rotated with respect to the chassis.

DRIVE/STEER

6 - 6

This valve works with the DRIVE RANGE switch,
on top the platform-control box, to determine the
maximum speed the chassis can travel along the
ground. See DRIVE RANGE switch above for a
table of settings and speeds.



TURNTABLE

BATTERY

When the

BATTERY

(1) is set to OFF,
all of the batteries
are disconnected
from the electrical
system.

:
switch

P/N 0191482

Read and understand all the previous chapters in
this manual before you begin to operate a TB

120.
Dual-fuel is the only optional equipment

discussed in this chapter. For operation of ot her
optional equipment, see the "OPTIONS" chapter.

CONTROL STATIONS



A TB 120 can be operated from the ground­control box or from the platform-control box.
There are basically two differences between
ground-control and platform-control operations,
both are safety related:

1. The ground-control box can override the
platform-control box at any time. If a person
operating the machine from the platform
becomes incapacitated, a person on the
ground can always take over machine control.

7. OPERATION

7. OPERATION

STARTING FROM THE GROUND-



CONTROL BOX

Before you begin to operate the T B 120 a
qualified operator must perform the "DAILY
INSPECTION & MAINTENANCE" described in
the chapter by that name in this manual.



Pre-start Conditions

After the DAILY INSPECTION & MAINTENANCE
has been performed, put the TB 120 into its pre­start conditions. Pre-start condit ions for starting
from the ground-control box are:

1. Set the BATTERY switch (1) to ON and look
to see that the AUX. BATTERY circuit breaker
has not popped out (close the battery­compartment door).

DANGER

Do not attempt to operate the TB 120 ground
controls when the platform, booms, or any
other conducting part of an TB 120 is in
contact with energized elect ri cal wires or if
there is an immediate danger of such contact.

2. The TB 120 can only be driven from the
platform-control box. The wheels cannot be
made to move from the gr ound- control box.
This prevents ground-control operat or s from
running over themselves.

EMERGENCY STOPPING



To stop a TB 120, push either of the two

EMERGENCY STOP

complete discussion of the EMERGENCY STOP
switches, see the “CONTROLS” chapter.)

buttons (1) (2) in. (For a

2. Check the circuit break er s ( 2) to see that none
has popped out.

NOTE: You do not need to check the cir cuit
breakers on the platform-control box.

3. Set SELECTOR SWITCH (3) to GROUND.

4. Pull EMERGENCY STOP (4) out.

5. Set ENGINE THROTTLE (5) to LO.

6. Set BOOM SPEED (6) as shown.

7. Set BOOMS/AXLES SWITCH (7) to BOOMS.

P/N 0191482

7 - 1

7. OPERATION

8. (OPTION - DUAL FUEL ) For machines set up
to run both gasoline and LP gas: Set t he
switch to GASOLINE or L.P.-GAS depending on
which you want to use. If you select L.P.-GAS,
open the valve on top the LP gas tank.



Starting (from the ground)

Do not attempt to start a TB 120 until the actions
in the previous part of this section (“STARTING
FROM THE GROUND-CONTRO L BOX”) have
been completed.

FUEL

CAUTION

If the engine fails to start (at the next step) in 20
seconds, turn the key to OFF and wait 60
seconds before turning the key to START again.

3. Turn the key (3) to START and hold it there
until the engine starts (or for a maximum of 20
seconds) then release the key to ON.

NOTE: You cannot raise or extend the main
boom unless the rear axles are extended and
locked. If you want to move the platf or m , from
the ground-control station, go to the "EXTEND
& LOCK REAR AXLES" section of this
chapter.

1. Insert the key (1) into the

SWITCH

2. Turn the key (1) to O N and pause there a few
seconds while an alarm sounds to alert others
that the TB 120 is about to start .

(2).

MASTER KEY

The engine should now be running.

NOTE: If you pause 30 seconds or more an
automatic protection feat ur e will prevent the
TB 120 from starting. If that happens, t ur n the
key to OFF and try again.

7 - 2

P/N 0191482

7. OPERATION

STARTING FROM THE PLATFORM-



CONTROL BOX

Before you begin to operate the T B 120, a
qualified operator must perform the "DAILY
INSPECTION & MAINTENANCE" described in
the chapter by that name in this manual.

To drive the TB 120 with the main boom down
and retracted, you do not need to extend the rear
axles. Therefore, you should go on to "Pr e- St art
Conditions" immediately below. If you want to
start the TB 120 from the platform-control box
then extend or raise the main boom, you first
need to extend and lock the rear axles for
stability. Therefore, you should g o t o t he
"EXTEND & LOCK REAR AXLES" sect ion in t his
chapter.

Pre-start Conditions



After the DAILY INSPECTION & MAINTENANCE
has been performed, put the TB 120 into its pre­start conditions. Pre-start condit ions for starting
from the platform-control box are:

4. At the ground-contr o l box, pull t he

EMERGENCY STOP

5. At the ground-control box, inser t t he key into

MASTER KEY SWITCH

the

NOTE: Because you set

SWITCH

when you set the
ON (unless the platform
switch and

SWITCH

6. Set the
BOOMS then close the ground-control door.

to PLATFORM, no alarm will sound

ANTI-RESTART MASTER

are both ON).

BOOMS/AXLES SWITCH

switch (4) out.

(5) and turn it to ON.

the SELECTOR

MASTER KEY SWITCH

EMERGENCY STOP

(6) to

to

1. Set the
to see that the
has not popped out (close the battery­compartment door).

2. Check the circuit break er s ( 2) to see that none
has popped out.

3. At the ground-control box, set t he

SWITCH

NOTE: This last step is of ten overlooked. Set
the

BATTERY

(3) to PLATFORM.

SELECTOR SWITCH

switch (1) to ON and look

AUX. BATTERY

circuit breaker

SELECTOR

to PLATFORM.

7. (OPTION - DUAL FUEL ) For m achines set up
to run both gasoline and LP gas: Set t he
switch to GASOLINE or L.P.-GAS depending on
which you want to use. If you select L.P.-GAS,
open the valve on top the LP gas tank.

FUEL

P/N 0191482

7 - 3

7. OPERATION

8. Put on your fall restraint, ent er the platform,
close the gate, and connect the lanyard of your
fall restraint to an anchor point ( 7) .

9. At the platform-control box (8) set the
following:

EMERGENCY STOP
ENGINE THROTTLE
DRIVE RANGE

NOTE: With these settings the maximum
ground speed is 0.75 mph (1.2 km / h) . If you
want to go faster, see the " PLAT FORM­CONTROL BOX" sect ion in t he " CO NTROLS"
chapter. Pay particular attention to the DRIVE
RANGE Table in that section.

(9)..............pulled out

(10)............LO

(11).....................LO



Starting (from the platform)

Do not attempt to start a TB 120 until the actions
in the previous part of this section (ST ARTING
FROM THE PLATFORM CONTROL BOX) have
been completed.

1. Turn the
(1) to ON and pause there a few seconds while
an alarm sounds to alert others that the TB 120
is about to start.

NOTE: If you pause 30 seconds or more an
automatic protection feat ur e will prevent the
TB 120 from starting. If that happens, t ur n the

ANTI-RESTART MASTER SWITCH

and try again.

ANTI-RESTART MASTER SWITCH

to OFF

10. Check the platform-control box circuit
breakers (12) to see that none has popped out .

CAUTION

If the engine fails to start (at the next step) in 20
seconds, turn the

SWITCH

turning the switch to START again.

2. Turn the
(2) to START and hold it t here until the engine
starts (or for a m aximum of 20 seconds) then
release the switch to ON.

to OFF and wait 60 seconds before

NOTE: Do not step on the f oot switch while
you are trying to start the engine.

ANTI-RESTART MASTER

ANTI-RESTART MASTER SWITCH

7 - 4

The engine should now be running.

P/N 0191482

MOVING THE PLATFORM



The engine should already be running (as
described earlier in this chapter) bef or e you star t
this section.

Before you can raise or extend the main boom
the rear axles must be extended (see "EXTEND
& LOCK REAR AXLES" in this chapter).

7. OPERATION

DANGER

Death or serious injury can result if a TB 120
tips over. A TB 120 might tip over if the rear
axles are retracted whil e the booms are up or
extended. The TB 120 should have its booms
completely retracted and completely down
before retracting the rear axles.

DANGER

Be certain that the space into which you are
about to move the platform, boom, turntable,
and chassis is free of obstructions. Always
look in the direction of movement.

Do not operate near energized electrical
conductors. See the inside-front cover of thi s
manual for the minimum safe approach
distance to energized power l i nes.

DANGER

If you operate from the platform-control box,
be sure that the lanyard of your fall restraint
or harness is attached to an anchor point on
the platform mount. Also, be sure the gate is
closed behind you.

Each of the ways the platform can move is
shown in the following two-page spread. The
photos show the switches to push to move the
platform. The switch call-out numbers (on the
left-hand page) correspond to the illustration
numbers on the right-hand page.

NOTE: The correct procedur e for retracting
the rear axles is shown at the end of this
chapter under "RETRACT & LOCK REAR
AXLES."

NOTE: At the end of each work day the TB
120 should be returned to the stowed position
as described under STOWING in the
"STOWING & TRANSPORTING" chapter.

P/N 0191482

7 - 5

7. OPERATION

IMPORTANT

You must hold the
switch (6) up when you use any of the platform­moving switches (1 through 5) to move the
platform. This is a safety feature to prevent the
platform from moving if a single platform-moving
switch is accidentally pushed.

(ground-control box operation):

GROUND OPERATION

GROUND-CONTROL BO X

IMPORTANT

operation):

(platform-control box

You must be stepping on the foot
switch (7) when you use any of the platform­moving switches (1 through 5) to move the
platform. Also, you must be st epping on the foot
switch to use either the
the

DRIVE/STEER

controller. The foot switch is a

LIFT/SWING

controller or

safety feature to prevent t he plat form from
moving if a single platform-moving switch or
controller is accidentally pushed.

FOOT SWITCH

PLATFORM-CONTROL BOX

7 - 6

P/N 0191482

7. OPERATION

P/N 0191482

7 - 7

7. OPERATION

MOVING THE TB 120



The TB 120 chassis can only be moved form
the platform-control box. You cannot move the
chassis from the ground-control box.

There is a blue arrow on the DRIVE
FORWARD end of the chassis and a yellow
arrow on the DRIVE REVERSE end of the
chassis. Pushing the
to DRIVE FORWARD causes the chassis to
move in the direction of the blue arrow on the
end of the chassis. Pushing the
controller to DRIVE REVERSE causes the
chassis to move in the direction of the yellow
arrow on the opposite end of the chassis.

NOTE: You must be stepping on t he foot
switch for the
work.

DRIVE/STEER

DRIVE/STEER

DRIVE/STEER

CONTROLLER

controller

DRIVE/STEER

controller to

NOTE: You cannot steer the wheels while
the brakes are set. This pr events high
stresses from building up in the tires and
steering mechanism. To release the brakes

DRIVE/STEER

the

controller must be in a
“drive position” -- not in its center, off,
position. Hold the

DRIVE/STEER

controller
slightly FORWARD or REVERSE while you
move it LEFT or RIGHT.

NOTE: When you release the

DRIVE/STEER

controller the wheels stay
where you set them. The wheels do not
return to the "straight ahead" position the
way automobile wheels do.

STEER LEFT STEER RIGHT

DRIVE

FORWARD

DRIVE

REVERSE

STEERING



The TB 120 can only be steered from the
platform-control box. You cannot steer the TB
120 from the ground-control box.

There are two blue arrows on the STEER LEFT
side of the chassis and two yellow arrows on
the STEER RIGHT side of t he chassis. Pushing

DRIVE/STEER

the

controller to STEER LEFT
causes the front wheels to turn for a left turn.
Pushing the

DRIVE/STEER

controller to
STEER RIGHT causes the fr ont wheels to turn
for a right turn.

DRIVE/STEER

CONTROLLER

ELECTRICAL OUTLET AT THE



PLATFORM (GFCI)

The electrical box (1) has two 3-prong, 125 V
ac electrical connectors. Their combined out put
is limited by a 15 A, slow-blow circuit breaker
(2).

NOTE: You must be stepping on t he foot
switch.

7 - 8

P/N 0191482

7. OPERATION

The power-input connector (3) for t he elect rical
box (1) is inside the left-rear side of the
turntable. Plug a source of power into t he
power-input connector (3) if you intend to use
the electrical box (1) to power equipment.

CAUTION

Unplug the source of power before you move
the TB 120.

3

z

At the ground-control box:

(OPTION - DUAL FUEL ) For m achines set up
to run both gasoline and LP gas: Set t he FUEL
switch to GASOLINE or L.P.-GAS depending
on which you want to use. If you select L.P.­GAS, open the valve on top the LP gas tank.

1. Pull EMERGENCY STOP (1) out.

2. Set SELECTOR SWITCH (2) to GROUND.

3. Set ENGINE THROTTLE (3) to LO.

EXTEND & LOCK REAR AXLES



Before the main boom can be raised or
extended the rear axles of the TB 120 must be
extended and locked. This section explains the
procedure for extending and locking the rear
axles.

z

Inside the turntable:

1. Set BAT TERY (1) to ON and look t o see t hat
the AUX. BATTERY circuit break er has not
popped out (close the battery-compartment
door).

4. Set BOOMS/AXLES SWITCH (4) to
BOOMS.

5. Insert the key (5) into the MASTER KEY
SWITCH (6).

6. Turn the key (5) to O N and pause there a
few seconds while an alarm sounds to alert
others that the TB 120 is about to st ar t.

NOTE: If you pause 30 seconds or more an
automatic protection feat ur e will prevent the
TB 120 from starting. If that happens, t ur n
the key to OFF and try again.

P/N 0191482

7 - 9

7. OPERATION

At the AXLES controls:

z

CAUTION

If the engine fails to start (at the next step) in
20 seconds, turn the key to OFF and wait 60
seconds before turning the key to START
again.

7. Turn the key (7) to START and hold it there
until the engine starts (or for a maximum of 20
seconds) then release the key to ON.

CAUTION

Rear axle weight is about to be lifted by the
jack. Check to be sure t he ar ea under the jack
shoe plate will support that weight and that the
area is clear of objects that might be crushed.

1. Push and hold the jack control lever (1) t o
RAISE until the rear wheels (2) are of f the
ground and the jack (3) has st opped lifting the
chassis.

2. Remove the snapper pin (4) from t he pin lock
(5) then remove the pin lock (5) from the upper
hole (6) in the chassis.

NOTE: You might have to cycle the axle
control lever (7) back and f or th, to relieve
pressure on the pin lock (5), while you twist
and pull the pin lock (5) out of t he chassis.

7 1

6

5

The engine should now be running.

8. Set

BOOMS/AXLES SWITCH

NOTE: The engine rpm should automatically
increase when you switch to AXLES.

(8) to AXLES.

4

3. Push and hold the axle control lever (8) to
EXTEND until the axles (9) (10) st op extending.

NOTE: One axle will extend before the
other, they do not extend together.

8

9

3

2

10

7 - 10

P/N 0191482

7. OPERATION

4. Completely insert the pin lock (11) into the
lower hole (12) in the chassis and install the
snapper pin (13) through the pin lock ( 11) and
the hole lip.

NOTE: You might have to cycle the axle
control lever (14) back and f or t h, to align
holes inside the chassis, while you push the
pin lock (11) into the chassis.

5. Pull and hold the jack control lever ( 15) t o
LOWER until the wheels are on the ground and
the jack stops retracting.

14

12

15

11

13



RETRACT & LOCK REAR AXLES

Retracting the rear axles is basically the
reverse of extending them.

DANGER

Death of serious injury can result if a TB 120
tips over. A TB 120 might tip over if the rear
axles are retracted whil e the booms are up
or extended. The TB 120 should have its
booms completely retracted and completely
down before retracting t he rear axl es.

z

Inside the turntable:

1. Set
the
popped out (close the battery-compartment
door).

BATTERY

AUX. BATTERY

(1) to ON and look to see that

circuit breaker has not

z

At the ground-control box:

1. Set the
BOOMS.

z

What next:

1. If you want to control the platform from the
ground-control box, go to the " MOVING THE
PLATFORM" section of this chapter.

2. If you want to control the platform from the
platform-control box, return to the "Pre-Start
Conditions" in the "STARTING FROM THE
PLATFORM CONTROL BOX" section of this
chapter.

BOOMS/AXLES SWITCH

to

z

At the ground-control box:

(OPTION - DUAL FUEL ) For m achines set up
to run both gasoline and LP gas: Set t he
switch to GASOLINE or L.P.-GAS depending
on which you want to use. If you select L.P.­GAS, open the valve on top the LP gas tank.

FUEL

P/N 0191482

7 - 11

7. OPERATION

1. Pull

2. Set

3. Set

4. Set
BOOMS.

5. Insert the key (5) into the

SWITCH

6. Turn the key (5) to O N and pause there a
few seconds while an alarm sounds to alert
others that the TB 120 is about to st ar t.

EMERGENCY STOP
SELECTOR SWITCH
ENGINE THROTTLE
BOOMS/AXLES SWITCH

(6).

(1) out.

(2) to GROUND.

(3) to LO.

(4) to

MASTER KEY

The engine should now be running.

8. Set

BOOMS/AXLES SWITCH

NOTE: The engine rpm should automatically
increase when you switch to AXLES.

(8) to AXLES.

NOTE: If you pause 30 seconds or more an
automatic protection feat ur e will prevent the
TB 120 from starting. If that happens, t ur n
the key to OFF and try again.

CAUTION

If the engine fails to start (at the next step) in
20 seconds, turn the key to OFF and wait 60
seconds before turning the key to START
again.

7. Turn the key (7) to START and hold it there
until the engine starts (or for a maximum of 20
seconds) then release the key to ON.

7 - 12

P/N 0191482

7. OPERATION

z

At the AXLES controls:

CAUTION

Rear axle weight is about to be lifted by the
jack. Check to be sure t he ar ea under the jack
shoe plate will support that weight and that the
area is clear of objects that might be crushed.

1. Push and hold the jack control lever (1) t o
RAISE until the rear wheels (2) are of f the
ground and the jack (3) has st opped lifting the
chassis.

1

3

3. Push and hold the axle control lever (8) to
RETRACT until the axles stop retracting .

NOTE: One axle might retr act before the
other, they do not necessarily retract
together.

4. Completely insert the pin lock ( 9) into the
upper hole (10) in the chassis and install the
snapper pin (11) through the pin lock ( 9) and
the hole in the lip.

NOTE: You might have to cycle the axle
control lever (8) back and forth a few times,
to align holes inside the chassis, while you
push the pin lock (9) into the chassis.

8

10

9

11

2

2. Remove the snapper pin (4) from t he pin lock
(5) then remove the pin lock (5) from the lower
hole in the chassis (6).

NOTE: You might have to cycle the axle
control lever (7) back and fort h a few times,
to relieve pressure on the pin lock (5) , while
you pull the pin lock (5) out of the chassis.

7

6

5

4

5. Pull and hold the jack control lever ( 12) to
LOWER until the wheels are on the ground and
the jack stops retracting.

12

P/N 0191482

7 - 13

7. OPERATION

z

At the ground-control box:

z

What next:

1. Set the
BOOMS.

BOOMS/AXLES SWITCH

to

At this point you will probably want to do one of
the following two things.

1. Turn the TB 120 off by pushing the

EMERGENCY STOP
MASTER KEY SWITCH

button in and turning the

to OFF.

2. Or you might want to drive the TB 120 as
described under "MOVING THE TB 120" earlier
in this chapter.

7 - 14

P/N 0191482

The following procedures are emerg ency
procedures only. Do not use them for norm al
operation. Their purpose is to g et t he platform
and operator safely to ground when the TB 120
motor will not start or some other pr oblem keeps
the platform from lowering in the normal way.

EMERGENCY OPERATION FROM THE



PLATFORM-CONTROL BOX

Try Procedure A first. I f Procedure A does not
work, use Procedure B.

z

Procedure A

z

8. EMERGENCY OPERATION

5. Set the EMERGENCY STOP switch (5) to on
(pulled up).

6. Set the ANTI-RESTART MASTER SWITCH
(6) to ON.

8. EMERGENCY OPERATION

1. The BATTERY switch (1) must be ON.

7. Step on the foot switch (7).

8. Hold a switch or controller, on top of t he
platform-control box, the way you want the
platform to move.

9. Pull down and hold the EMERGENCY
POWER OPERATION switch (8) and the
platform will move.

NOTE: Boom movements will be slow and
have long lag times under EMERGENCY
POWER OPERATION.

2. The MASTER KEY SWITCH (2) must be ON.

3. The EMERGENCY STOP switch (3) must be
pulled out (on).

4. The SELECTOR SWITCH (4) must be set to
PLATFORM.

P/N 0191482

8 - 1

8. EMERGENCY OPERATION

z

Procedure B

z

If the red
reset it by pressing it in then slowly releasing it. If
the red light goes out, t ry to restart the motor and
lower the platform in the normal way.

If the red light st ays on and the green

STATUS

retracted in the normal way (if it is extended) or
lowered in the normal way (if it is almost
completely retracted). Use one or the ot her of
those two functions to retrieve the platform as
long as the green

If the red light st ays on and the green light stays
off, continue with this procedure.

EMS WARNING

light (2) is on, the main boom can be

EMS STATUS

NOTE: If t he green light goes out, t ry to reset
the red
the green light will come back on.

EMS WARNING

light (1) is on, try to

EMS

light is on.

light again to see if

2. The
pulled out (on).

3. The
PLATFORM.

4. Set the
(pulled up).

EMERGENCY STOP

SELECTOR SWITCH

EMERGENCY STOP

switch (4) must be

(5) must be set to

switch (6) to on

1. The

8 - 2

BATTERY

switch (3) must be ON.

5. Set the
(7) to OFF.

ANTI-RESTART MASTER SWITCH

DANGER

Death or serious injury can result if a TB 120
tips over. A TB 120 can tip over if the booms
lower w i thout retracting. At the next step,
stop immediately if the booms lower without
retracting.

If you have control over turntable swing,
align the turntable with the chassis to take
advantage of the extended base of support.

6. Pull up and hold both

DOWN

booms retract as they lower.

switches (8) (9) and watch to see that the

EMERGENCY BLEED

P/N 0191482

EMERGENCY OPERATION FROM THE



GROUND-CONTROL BOX

Try Procedure C first. I f Procedure C does not
work, try Procedure D second and Procedure E
third.

Procedure C

z

z

1

8. EMERGENCY OPERATION

6. Push and hold any of the five platform-moving
switches (7) to move the platform as desired.

1. Set the

2. Set the

3. Pull the
(on).

4. Set the

5. Push and hold the
switch (5) up.

BATTERY

MASTER KEY SWITCH

EMERGENCY STOP

SELECTOR SWITCH

switch (1) to ON.

(2) to ON.

switch (3) out

(4) to GROUND.

GROUND OPERATION

7. Push and hold the

OPERATION

will move.

NOTE: Boom movements will be slow and
have long lag times under

POWER OPERATION

Procedure D

z

z

If the red
reset it by pressing it in then releasing it several
times. If the red light goes out, try to restart the
motor and lower the platfor m in the normal way.

If the red light st ays on and the green

STATUS

retracted in the normal way (if it is extended) or
lowered in the normal way (if it is almost
completely retracted). Use one or the ot her of
those two functions to retrieve the platform as
long as the green

switch (6) down and the platform

EMS WARNING

light (2) is on, the main boom can be

EMERGENCY POWER

EMERGENCY

.

light (1) is on, try to

EMS STATUS

light is on.

EMS

P/N 0191482

NOTE: If t he green light goes out, t ry to reset
the red
the green light will come back on.

If the red light st ays on and the green light stays
off, continue with this procedure.

EMS WARNING

light again to see if

8 - 3

8. EMERGENCY OPERATION

1. Set the

2. Set the

3. Pull the
(on).

BATTERY

MASTER KEY SWITCH

EMERGENCY STOP

switch (3) to ON.

switch (5) out

(4) to OFF.

5. Pull up and hold both

DOWN

booms retract as they lower.

z

z

switches (7) (8) and watch to see that the

Procedure E

EMERGENCY BLEED

4. Set the

SELECTOR SWITCH

(6) to GROUND.

DANGER

Death or serious injury can result if a TB 120
tips over. A TB 120 can tip over if the booms
lower w i thout retracting. At the next step,
stop immediately if the booms lower without
retracting.

If you have control over turntable swing,
align the turntable with the chassis to take
advantage of the extended base of support.

8 - 4

1. Set the

BATTERY

switch (1) to OFF.

P/N 0191482

DANGER

Death or serious injury can result from being
crushed by the main boom as it lowers. At the
next step do not reach for the manual bleed­down valve from above the turntable.

Death or serious injury can result if a TB 120
tips over. A TB 120 can tip over if the booms
lower w i thout retracting. At the next step,
stop immediately if the booms lower without
retracting.

If you have any control over turntable swing,
align the turntable with the chassis to take
advantage of the extended base of support.

8. EMERGENCY OPERATION

3. Very slowly open the emergency bleed-down
valve. The further it is opened, the faster the
booms come down.

2. Reach the manual bleed-down valve from the
position shown above.

DANGER

Be certain you close the emergency bleed­down valve at the next step. Failure t o do so
prevents the main boom from remaining
stationary in an elevated position.

4. Close the emergency bleed-down valve.

P/N 0191482

8 - 5 (8 - 6 blank)

8 - 5

STOWING



At the end of each work day (or in preparation for
lifting, towing, or storage) a qualified operat or
should put the TB 120 into its stowed position
then lock it.

The correct stowed position is shown here.

To bring the TB 120 into the st owed position use
the controls on the ground-contr ol box to:

1. Fully retract the main boom.

2. Fully lower the main boom.

3. Center the main boom between the rear
wheels.

9. STOWING & TRANSPORTING



TRANSPORTING

The user assumes all responsibility for choosing
the proper method of tr anspor t ation, and the
proper selection and use of transport at ion and
tie-down devices, making sure the equipment
used is capable of supporting the weight of the
aerial platform and that all m anufacturer’s
instructions and warnings, regulations and safety
rules of their employer, the DOT and/or any other
state or federal law are followed.



Trailering



9. STOWING & TRANSPORTING

DANGER

A TB 120 weighs approximately 39,500
pounds (17,917 kg). Loading ramps must be
able to support that weight . Transport tr ai l ers
must be able to safely transport that weight.

Do not load a TB 120 on grades over 25%;
with the turntable rot at ed with respect to the
chassis; or on ramps with poor tract i on,
uneven surfaces, or steps.

To safely drive a TB 120 onto a transport t railer:

4. The rear axles should be completely retracted
and the jack should be completely up.

To lock the TB 120:

1. If the engine has just been under load and is
hot, set the ENGINE THROTTLE to LO and let
the engine idle for one minute.

2. Set the MASTER KEY SWITCH to OFF,
remove the key, and close the ground-contr ol
access door.

3. Set the BATTERY switch to OFF and lock the
BATTERY switch.

4. Close the door to the battery compart m ent.

5. (OPTION - LPG) For m achines equipped with
LPG, close the valve on the LPG-tank
(completely screwed in).

6. Close and latch all other doors.

1. Visually inspect the alignment of t he loading
ramp (1) and the truck or t railer (2). They should
both be on the same straight line.

2. Chock (3) the wheels of the tr uck or trailer so
it cannot roll away form the loading r am p (1)
while the TB 120 is being loaded.

3. Set the ground-control box f or platform
operation.

P/N 0191482

9 - 1

9. STOWING & TRANSPORTING

4. Enter the platform and at tach the lanyard of
your fall restraint to the lanyard anchor point ( 4)
on the platform.

13. Leave the engine running in preparation for
the next section.

14. Chock the TB 120 wheels.
NOTE: In the stowed position (boom over rear

axles), the TB 120 front (steering) axle weighs
approximately 16,900 pounds (7,682 kg) and
the rear (extending) axle weighs
approximately 22,650 pounds (10,295 kg). If
you need to shift trailer axle-weight you can
transport a TB 120 with the booms over the
front axle. However, you should always load
the TB 120 with the booms over the rear axle
so that you do not get disoriented using the
controls.

5. Use the controls of the platform-control box (5)
to raise the main boom (6) to its hor izontal
position.

6. Use the platform contr ols t o bring the TB 120
into the STOWED POSITION (except main
boom horizontal) at the foot of the loading ramp
(7) with the steering wheels (8) nearest the ram p
(7).

7. Visually check (from the platform) to be sure
the TB 120 is aligned with the ramp and the
ramp is still aligned with the truck or trailer. All
should be in a straight line.

DANGER

Death or serious injury can result from losing
control of a TB 120 while loadi ng. Always set
the ENGINE THROTTLE and DRIVE RANGE to
LO anytime you drive up or down a grade.

8. Set both

RANGE

9. Use
platform slight ly to t he side so you are aligned
with the wheels and can see them better.

10. Use the
TB 120 straight onto the ramp and trailer.

11. Use
boom between the rear wheels.

NOTE: If you are loading ont o a conventional
step-deck trailer, use
rotate the turntable 180° to align the base
boom between the front wheels.

ENGINE THROTTLE

to LO.

TURNTABLE SWING

DRIVE

TURNTABLE SWING

controller to slowly drive the

TURNTABLE SWING

to move the

to align the base

and

DRIVE

to

Securing to a Transport Vehicle





This procedure assumes that you have just
finished the previous section, that the T B 120
engine is still running, and that t he wheels are
chocked.

1. Place a wooden block (1) under the weldment

(2) on the end of the inner inter m ediat e boom
then use the controls on the platform-control box
to lower the weldment (2) onto the block (1).

2. Set the

OFF.

3. Set the

remove the key, and close the ground-contr ol
access door.

4. Set the

BATTERY

5. (OPTION - LPG) For m achines equipped with

LPG, close the valve on the LPG tank
(completely screwed in).

ANTI-RESTART MASTER SWITCH

MASTER KEY SWITCH

BATTERY

switch.

switch to OFF and lock the

to OFF,

to

12. Lower the main boom until it is about a foot
(0.3 m) above the trailer.

9 - 2

P/N 0191482

CAUTION

Do not run a strap over the hose carrier
assembly (3). The assembly is not strong
enough to hold the platfor m down and will be
destroyed in transit. Run a strap where shown.

6. Run a nylon strap (4) over the top of the t ip
boom (5) to hold the platfor m on t he block (1) as
shown.

9. STOWING & TRANSPORTING

8. Use rubber straps (8), as shown, to k eep the
rear cowling doors (9) from opening during
transport.

DANGER

A loose TB 120 can cause death or serious
injury. Do not attach tie downs to t he st eering
tie rods. The tie rods are not strong enough
to safely hold a TB 120.

7. Attach chains to the front and back tie-down lugs
(6) (7). Chocks may be removed at this time,
though it is a good idea to leave them in place.

9. Hook a long rubber strap ( 10) t hrough the hole
(11) in the inside of one of the front cowling
doors (12).

10. Stretch the rubber str ap ( 10) under the
turntable (13) to a similar hole in t he opposit e
front cowling door. (This pr events t he front doors
from opening during t r ansport.) Fasten the
engine compartment door with a similar str ap
(14).

P/N 0191482

9 - 3

9. STOWING & TRANSPORTING

11. Use wire-ties, as shown, to keep the foot
switch and gravity gate from bouncing ar ound.

Reverse the above procedure after transport ing.



Towing



Do not tow a TB 120 unless it is equipped with
the optional tow package. See the “ O PTIONS”
chapter.

9 - 4

P/N 0191482

10. DAILY INSPECTION & MAINTENANCE

10. DAILY INSPECTION
& MAINTENANCE

At the start of each work day (or 8 hour shift) a
TB 120 qualified operator m ust per form the
DAILY INSPECTION AND MAINTENANCE list e d
in the table below.

Do not operate a TB 120 that is known

DANGER

to be damaged or malfunctioning.

The purpose of the daily inspection and
maintenance is to keep the TB 120 in proper
working condition and to detect signs of
malfunction at the earliest possible t ime.

Defective parts or equipment
malfunctions jeopardize the safety of
the operator and other personnel, and
can cause damage to the machine.

DAILY INSPECTION AND MAINTENANCE TABLE

(Set the

ITEM

1. Engine fuel level Check fuel gauge (full)

2. Fuel tank cap Visually inspect (installation)

3. Engine oil Check oil level (between dipstick lines)

4. Fuel leaks Visually inspect (hoses, connections, etc.)

5. Engine coolant Check fluid level and radiator hoses

6. Wiring harnesses Visually inspect (installation, condition)

7. Battery terminals Visually inspect (no corrosion)

8. Battery fluid level Check fluid level (in contact with filler neck)

9. Hydraulic oil Check fluid level (between lines on gauge)

10. Hydraulic oil leaks Visually inspect (hoses, tubes)

11. Tires Visually inspect (condition)

12. Bolts and fasteners Visually inspect (looseness)

13. Structural damage & welds Visually inspect (weld cracks, dents)

14. Guardrails Visually check condition

15. Platform gravity gate Visually inspect (operation)

16. Self-closing gate Actuate and visually check condition

17. Lanyard anchor points Visually check condition

18. Axle/boom interlock Check operation

19. Emergency power motor/pump Check operation (causes correct motion)

20. Air filter Check condition (gauge)

21. Charging system Visually inspect (gauge)

22. Ground-control box switches and alarms Actuate and visually inspect for operation

23. Level sensor Actuate and listen for alarm

24. Platform-control box switches and alarms Actuate and visually inspect for operation

25. GFCI (Ground Fault Circuit Interrupt) Actuate and visually check for operation

26. Platform work lights Turn them on to see that they work

27. Flashing lights Turn them on to see that they work

28. Driving lights Turn them on to see that they work

29. Slide pads Visually inspect (boom wear marks)

30. Whiffles and wire ropes Visually inspect (even tension, condition)

31. Envelope management system Check operation

32. Placards and decals Visually inspect (installation, condition)

MASTER KEY SWITCH

to OFF before you begin this inspection)

SERVICE REQUIRED

P/N 0191482

10 - 1

10. DAILY INSPECTION & MAINTENANCE

The rest of this chapter shows how to perfor m
the SERVICE REQUIRED for each ITEM in the
DAILY INSPECTION AND MAINTENANCE
TABLE.

5

1. Engine fuel level

Visually check to see that the gasoline or diesel
tank is full.

5

1

2

4

Open the straps (4).
Manually lift the tank (5) out.

2. Fuel tank cap

Check to see that the tank cap is in place and
is tight.

3

7

6

(OPTION - LPG) Visually check to see that the
LPG tank is full (1) .

To replace an LPG tank:
Close the valve (2).
Manually disconnect the fuel hose at the

knurled ring (3).

NOTE: Notice the positioning pin ( 6). At re­installation be sure the slot (7) in the top of
the LPG tank (5) alig ns with t he pin ( 6).

3. Engine oil

CONTINENTAL GASO LI NE ENGINE

10 - 2

P/N 0191482

CUMMINS DIESEL ENGINE

10. DAILY INSPECTION & MAINTENANCE

5. Engine coolant

Both Continental and Cummins engines are
liquid cooled. At operating t em per ature the
coolant should be at the HOT level. When cold,
there should be about 1 inch (2.5 cm) of
coolant in the bottom of the r eser voir.

Keep the oil level between the marks on the
dipsticks.

The distance between the top and bottom
dipstick marks corresponds t o about 1 qt USA
(one liter). Add oil, if needed at top of the
engines.

Add oil at the top of the eng ine.

NOTE: Some Cummins engines have an oil
funnel inserted into the side of t he engine
block just above the oil pan. The larg e end
of the funnel is closed by an expansion plug.
Unscrew the handle on the plug until the
expansion plug relaxes and contracts
enough to remove from the funnel, then add
oil at the funnel.

NOTE: See the “SPECIFICATIONS” chapter
for the correct engine-oil grade and weight.

4. Fuel leaks

The coolant is half water and half ethylene
glycol.

To add coolant:

Turn the engine OFF at the ground-control
box

MASTER KEY SWITCH

.
Remove the cap from the coolant reservoir.
Add coolant and replace the cap.

6. Wiring harnesses

Visually inspect the entire length of t he fuel line,
from the engine to t he fuel tank, for leaks.

P/N 0191482

Inspect all the wiring harnesses, on the
machine, for loose connections, broken wires,
and frayed insulation.

10 - 3

10. DAILY INSPECTION & MAINTENANCE

7. Battery terminals

Battery terminals should be clean and free of
corrosion.

8. Battery fluid level

2

1

9. Hydraulic oil

To check the hydraulic oil level:

Completely lower and completely retract the
booms.

The hydraulic oil temperature (1) should be
less than 200°F (93°C).

The hydraulic oil level should be between
the two marks (2) on the sight - glass gauge.

If necessary, add hydraulic oil at the filler cap
(3). See the “SPECIFICAT IONS” chapter for
type and grade of hydraulic oil.

DANGER

Batteries emit hydrogen and oxygen,
elements that can combine explosively. Do
not smoke or permit open flames or sparks
when checking batteries.

Remove the caps (1) from each batter y and
visually check to see that the battery fluid is
within 1/4” (6 mm) of the bottom of the f iller
neck (2) inside each hole.

10. Hydraulic oil leaks

DANGER

Leaking hydraulic oil can cause burns, fires,
falls (slipping), cuts, and puncture wounds
(if under high pressure). Have leaks repaired
by a qualified maintenance person.

Hydraulic oil leaks are easily visible and can
show up anyplace. Visually inspect the entire
machine for hydraulic oil. Check t he ground
under the machine for leak ed oil.

10 - 4

Look at the platform end of each boom. Oil can
run down the inside of a boom and drip out the
end.

P/N 0191482

11. Tires

TB 120 tires are foam f illed. Punctures of the
type caused by bolts, screws, or nails are not a
problem. Look for lar ge holes or long cuts
completely through the tire body: holes or cuts
where foam is being forced or er oded out of the
tire. Also, look for large imbedded objects, such
as angle iron, that can rip a tire body open
under some conditions. The tire shown here is
not fit for service.

10. DAILY INSPECTION & MAINTENANCE

Pay particular attention to all of the wheel nuts.
None should be visibly loose, missing, or
deformed.

12. Bolts & fasteners

Visually inspect all fasteners to see that none is
missing or obviously loose.

Pay particular attention to all of t he safety-wired
bolts. Neither the wire nor the bolt heads should
be damaged in any way. (Check the turntable
end of the boom and the end of t he lift cylinder
for other safety-wired bolts. Check both sides of
the machine.)

Pay particular attention to all of the upper
rotation-bearing bolts. None should be visibly
loose, missing, or have broken heads.

P/N 0191482

Pay particular attention to all of t he lower ( view
from under the machine) rotation-bearing bolts.
None should be visibly loose, missing, or have
broken heads.

10 - 5

10. DAILY INSPECTION & MAINTENANCE

13. Structural damage & wel ds

Visually inspect all welds for cracks, all
structural members f or deformity, and all sheet
metal for dents that could int er fere with
machine operation.

Pay particular attention to boom welds. Closely
inspect all boom welds, along their entire
length, for cracks.

14.Guardrails

16. Self-closing gate

Inspect the self-closing gate, at the platfor m
entrance, to see that it swings f r eely, closes
firmly, and is not deformed in any way.

17. Lanyard anchor points

(option)

Visually inspect the guardrails to see that none
of the tubing has been cut out, r em oved, or
deformed in any way. Visually check the
guardrail welds to see that none is cracked or
ground down.

15. Platform gravity gate

Inspect the gate to be sure it is pr esent and
moves freely.

Neither lanyard anchor point should be visibly
deformed, cut, nor worn. The welds should not
be cracked nor ground down.

18. Axle/boom interlock

3

1

With the axles (1) ( 2) r etracted and the pin lock
(3) in place, you should not be able to raise the
main booms over a couple of degrees above
the horizontal nor should you be able to extend
the platform much beyond four feet (1.2 m).

2

10 - 6

P/N 0191482

10. DAILY INSPECTION & MAINTENANCE

19. Emergency power motor/pump

DANGER

When the turntable rotates clockw i se ( CW)
it will move directly toward you. When you
check TURNTABLE SWING at CW (1) be
sure you have room to step backward.

5

4

6

With the axles (4) ( 5) extended and t he pin lock
(6) out, you should not be able to raise the main
booms over a couple of degrees above the
horizontal nor should you be able to extend the
platform much beyond four feet (1.2 m).

9

8

7

With axles (7) (8) extended and pin lock (9) in
lower hole, extend the main boom 10 - 20 feet
(3 - 6 m).

Check each of the five boom-movement
switches (2), using
to see that they work correctly. Check bot h
positions of each switch (2). (For correct
emergency power operating procedures see
the “EMERGENCY OPERATION” chapter . )

EMERGENCY POWER

(3),

11

10

12

With axles (10) (11) extended and the pin lock
(12) out, you should not be able to lower the
jack to raise the rear axles.

NOTE: When you finish this inspection,
retract the main boom, ret ract the axles, and
insert the pin lock into the upper hole.

P/N 0191482

Check each of the boom-movement functions
from the platform-control box (4), using

EMERGENCY POWER

of each control. (For corr ect emergency power
operating procedures see the “EMERGENCY
OPERATION” chapter. )

(5). Check all positions

10 - 7

10. DAILY INSPECTION & MAINTENANCE

20. Air filter

Start the engine fr om t he ground-control box.

FILTER MINDER

The
indicator in it (2). As the air filter clogs the
yellow indicator raises toward the red area (3)
of the sight glass. I f the indicator is in the red,
after the engine has been running for 30
seconds in HI
filter needs to be replaced. (For further
explanation of the
the “GAUGES” chapter. )

ENGINE THROTTLE

gauge (1) has a yellow

, the air

FILTER MINDER

gauge, see

22. Ground-control box sw itches and alarms

DANGER

When you check TURNTABLE SWING at CW
(1) the turntable will move directly toward
you. Be sure you have room to step
backward.

NOTE: Leave the engine running for the
next step.

21. Charging system

With the engine running in LO

THROTTLE

should not be to the left of “ 0” ( left of “0” is
discharging).

, the needle in the

ENGINE

AMPS

gauge

Check each of the five platform-moving
switches (2) using
to see that they cause the TB 120 to move the
way it should. Check both positions of each
switch. (For correct operating pr ocedur es see
the “OPERATION” chapt er .)

Pay particular attention to the

STOP

switch (4) to see that it turns the TB 120

engine off when struck.
Listen for the start- up alar m when the

SWITCH

(5) is first turned O N.

NOTE: Leave the engine running for the
next step.

GROUND OPERATION

EMERGENCY

MASTER

(3)

NOTE: Leave the engine running for the
next step.

10 - 8

P/N 0191482

10. DAILY INSPECTION & MAINTENANCE

23. Level sensor

Start the TB 120 engine. Raise t he plat form
about three feet (1 m) t hen extend t he m ain
boom as far as it will go (about six f eet or 2 m)
with the rear axles retracted. Pull the level
sensor to the side as far as possible. T he level
sensor alarm should sound. (The level sensor
is located inside the left-rear side of the
turntable, behind the rear cowling door.)

24. Platform-control box switches and
alarms

Listen for the motion alarm ( if the TB 120 has
that option) as you drive forward and backward.
Listen for the start- up alar m when the

RESTART

switch is first turned ON.

ANTI-

Pay particular attention to the foot switch to see
that it deactivates the platform-moving switches
when the foot switch is not stepped on.

25. GFCI

(Ground Fault Circuit Int er r upt)

If the TB 120 has the ac gener ator option,
connect the power plug (inside the left-r ear of
the turntable) to the ac gener ator then start the
TB 120 engine. Set the

MACHINE/GENERATOR

switch (on front of
platform-control box) to GENERATOR. If the
TB 120 does not have the ac generator option,
connect a source of 125 V ac power to the
power plug inside the left-rear of the turntable.

Check all of the platform-moving, drive, and
steering functions from the platform-control box
to see that they cause the TB 120 to move the
way it should. (For correct operating
procedures see the ”OPERATION” chapter.)

Pay particular attention to the

switch (1) to see that it turns the TB 120

STOP

EMERGENCY

engine off when struck.
Press the operator

HORN

(2) to see that it

works.

P/N 0191482

Push the

RESET
RESET

TEST

button (2) should pop out. Press the
button (2) back in then set the

button (1) in on the GFCI. T he

MACHINE/GENERATOR

switch to MACHINE.

10 - 9

10. DAILY INSPECTION & MAINTENANCE

26. Platform work light s

(option)

While the engine is running, momentar ily turn
each work light on (use the switch on the back
of each light) to see that t hey both work .

27. Flashing lights

(option)

Visually check to see that the lights flash at
approximately one flash per second when the
engine is running. (See the “OPTIONS” chapter
for a photograph of the lights.)

Look at the surface (4) t hat slides on each slide
pad. The paint should still be in place and there
should not be any signs of bare metal gouging.

Check the slide pads and paint inside the front
end (5) of the base boom similarly.

Completely retract the booms then tur n t he
engine OFF at the ground-cont r ol box

KEY SWITCH

.

MASTER

30. Whiffles and wi re ropes

While you are inspecting the whiffles check the
condition of the wire ropes near the whiffles.
The wire ropes should not have any broken
strands or be distorted in any way.

28. Driving lights

(option)

While the engine is running, momentar ily turn
the driving lights on to see that t hey work. ( See
the “OPTIONS” chapter for a photograph of the
lights.)

29. Slide pads

Start the TB 120 engine. Raise t he plat form
about three feet (1 m) t hen extend t he m ain
boom as far as it will go (about six f eet or 2 m)
with the rear axles retracted. Visually inspect to
see that all the slide pads are in place in the
rear ends of the booms: seven slide pads (1) in
the base boom, six (2) in the inner intermediat e
boom, and six (3) in the outer intermediat e
boom.

Visually inspect the whiffle (1) at the rear end of
the base boom (2). The face of the whiffle (1)
should be parallel to the end of the base boom
(2). Visually check the stack of spring washers
(3) on the end of each wire rope (4). T he
washers (3) should be squashed tightly
together...

...there should not be any gaps between the
washers as shown here.

10 - 10

P/N 0191482

Visually check the whiffle (5) at the rear of the
outer intermediate boom (6) t o see that the
whiffle face (5) is par allel t o the end of the
boom (6).

10. DAILY INSPECTION & MAINTENANCE

31. Envelope management system

1

2

Extend and lock the rear axles.
Use the controls on the ground-contr ol box to

raise the main boom slightly above horizontal.
Use the controls on the ground-contr ol box to

extend the booms until they automatically stop.
The black & yellow tape (1) should be within 2

inches (5 cm) of being f lush with the end of the
hose carrier cover (2) and the EMS
ENVELOPE lights (3) (4) should be on.

At the front of t he base boom ( 7) visually check
all four spring-washer stacks ( 8) to see that
there are no gaps between the washers.
Visually check to see that the face of the whiffle
(9) is parallel to the edge of the boom (10).

Also at the front of t he base boom , check to
see that the face of t he whiffle (11) is parallel to
the face of the whiffle support (12).

If any whiffle (1) (5) ( 9) ( 11) is canted, or if any
of the six stacks of spring washers (3) (8) has
gaps, remove the TB 120 from service
immediately and have a qualified service
technician repair the condition.

NOTE: The EMS ENVELOPE lights (3) (4)
should start to flash a few f eet before boom
extension stops.

If the booms stop in the wrong place or the light
does not work correctly, take the TB 120 out of
service immediately until a qualified service
technician makes repairs.

P/N 0191482

10 - 11

10. DAILY INSPECTION & MAINTENANCE

32. Placards and Decals

Look to see that all placards and decals are in place and legible. Replace any missing or illegible placards or
decals before placing the TB 120 into service for the daily work shift.

OPTIONAL PLACARDS AND DECA LS

The

, listed below on this page, are only installed on machines that have
the corresponding options.
Placards and decal kits are available from Snorkel dealers.

PLACARDS AND DECALS INSPECTION CHART 1

NO PART # DESCRIPTION REQ

1 0073667 Inspect wire ropes 3
2 0190989 Danger - do not reach through

3 969249 Warning stripe 1
4 0323899 Danger - electrocution hazard 1
5 0070921 125 volts 15 amps 1
6 0070418 Snorkelift logo 3
7 0070540 Yellow arrow 3
8 0070541 Blue arrow 3

9 0111343 High range speed selector valve 1
10 0110708 Danger - axles/jack 1
11 451986 Danger - do not alter limit switch 1
12 0072276 Lug nut torque 450-500 ft lb 4
13 0323896 Danger - electrocution hazard 5
14 0073585 Made in the USA 2
15 0191440 TB 120 logo 2
16 0071927 Hydraulic oil 2
17 0073491 Safe operating information 1
18 0070901 Serial number 1
19 0323897 Danger - do not operate
20 0190988 Danger - ground control

21 0190990 Danger - EMS operating

22 0190937 Rear door strip 1
23 0074372 Engine RPM 1
24 0151410 Danger - rotating engine parts 2
25 0073224 Notice manual re-order 1
26 0073492 Rotate while greasing 1
27 0181562 ANSI standards 1
28 0191244 Ground control definition 1
29 0073043 Manual holder 1
30 0073298 Danger - foam/solid tires 2
31 0191491 Danger - EMS tampering 1
32 7030003 Lube recommendations 1
33 0074311 Danger - cylinder failure (one per

34 0071925

0071926

holes

instructions

instructions

cylinder)
Gasoline (gasoline machines)
Diesel (diesel machines)

3

1

1

6

1
1

OPTIONAL PLACARDS AND DECA LS

NO PART # DESCRIPTION REQ

A 0081441 Caution - liquid withdrawal LP

(dual fuel and LP only option)

B 0090493 Dual fuel instructions (dual fuel

option)

C 0071793 Hydraulic warm-up instructions

(hydraulic system warm-up
option)

D 0082171 Towing instructions (tow kit

option)

E 0090760 Steering float valve (tow kit

option)

F 0082160 Danger - do not exceed (tow kit

option)

G 0082203 Danger - crushing hazard (tow kit

option)

1

1

1

2

1

1

1

10 - 12

P/N 0191482

10. DAILY INSPECTION & MAINTENANCE

PLACARDS AND DECALS INSPECTION DRAWING 1

P/N 0191482

10 - 13

10. DAILY INSPECTION & MAINTENANCE

PLACARDS AND DECALS INSPECTION CHART 2

NO PART # DESCRIPTION REQ

40 0323899 Danger - electrocution hazard 2
41 0190992 Emergency bleed down 4
42 0072531 Danger - electrocution hazard 1
43 0070921 125 volts 15 amps 1
44 0071425 Platform identification 1
45 0090589 Platform capacity 500 1
46 0190995 Danger - electric/manual

emergency bleed down

47 0191139 Danger - platform control box top 1
48 0190999 EMS status 1
49 0191000 Backup EMS status 1
50 0070418 Snorkelift logo 2
51 0191287 Blank switch cover 1
52 0190994 Danger - emergency bleed down

instructions
53 0191138 Platform control box top 1
54 0191150 Platform control box front 1
55 0191288 Blank switch cover 1
56 0073089 Battery disconnect 1
57 0191137 Ground controls 1
58 0073492 Rotate while greasing 1
59 0191174 EMS/status/envelope/wrn 1
60 0191245 Platform controls definition 1
61 0150448 Attach fall restraint device 1
62 0073668 Caution - do not use boom to lift 1
63 0111342 High range speed selector

location
64 0111623 Engine protection system 1

65 0191236 EMS circuit breaker 1

1

1

1

OPTIONAL PLACARDS AND DECA LS

NO PART # DESCRIPTION REQ

L 0191435 Warm-up at ground (hydraulic

system warm-up option)

M 0191436 Warm-up at platform (hydraulic

system warm-up option)
N 0073080 Cold start (cold start option) 1
P 0181376 Lights on/off switch (tail and head

light option)
R 0181571 Fuel empty (fuel empty indicator) 1
T 0082164 Danger - do not ride in platform

(tow kit option)
U 0191030 Machine/generator (hydraulic AC

generator option)
V 0090492 Dual fuel switch (dual fuel option) 1

1

1

1

1

1

10 - 14

P/N 0191482

10. DAILY INSPECTION & MAINTENANCE

PLACARDS AND DECALS INSPECTION DRAWING 2

P/N 0191482

10 - 15 (10-16 Blank)

11. TROUBLESHOOTING

11. TROUBLESHOOTING

All of the actions described in this chapter may
be performed by a TB 120

operator

-- a trained
and qualified service technician is not req u ir ed.
Any problem that cannot be fixed by actions
listed below should be referred to a trained and
qualified TB 120

service technician.

TB 120 OPERATOR’S TROUBLESHOOTING CHART

PROBLEM CAUSE REMEDY

Engine will not start from the

ground-control box

Engine will not start from the

platform-control box

.

.

1. Switches are set wrong.
(Engine will not crank.)

2. The
breaker, on the ground­control box, has tripped.
(Engine will not crank.)

3. Out of fuel. (Gasoline or
diesel engine cranks but will
not start.)

4. LPG OPTION.

FUEL

control box is set wrong.
(Engine cranks but will not
start.)

1. Stepping on foot switch.
(Engine will not crank.)

2. Switches are set wrong.
(Engine will not crank.)

MAIN SYSTEM

switch on the ground-

The first column, of the following chart, lists
some common problems encountered by TB
120 operators. The second column lists some
of the causes for each problem. The third
column lists remedies.

circuit

A.

At the ground-control box:

B.
C.
D.
E.

seconds then turn
START.

Push the
If the button pops out again, refer the problem
to a qualified service technician.

Add fuel to tank then alternately crank engine
for 20 seconds and let starter motor cool for
60 seconds (20 on / 60 off).

A.

L.P.-GAS or GASOLINE.

B.

see if there is fuel in tank.

C.

valve, on top L.P. tank, is open.

D.

then let starter motor cool for 60 seconds.
Be sure you are not stepping on the foot

switch, or that the foot switch is not “blocked”
in any way, while you are trying to start the
engine.

A.

At the ground-control box:

B.
C.
D.

At the

E.
SWITCH

F.
G.

SWITCH
H.

SWITCH

BATTERY

Set

MASTER KEY SWITCH

Set

EMERGENCY STOP

Pull

SELECTOR SWITCH

Set

MASTER KEY SWITCH

Set

MAIN SYSTEM

FUEL

Set

Check the fuel gauge, on top of the tank, to

For L.P.-GAS only: Check to see that fuel

Alternately crank engine for 20 seconds

BATTERY

Set

MASTER KEY SWITCH

Set

EMERGENCY STOP

Pull

SELECTOR SWITCH

Set

switch to ON.

to OFF.

out (on).

to GROUND.

to ON for 5

MASTER KEY SWITCH

(25) button back in.

switch (ground-control box) to

switch to ON.

to ON.

out (on).

to PLATFORM.

platform-control box:

Set the

Pull the

Turn the

Turn the

ANTI-RESTART MASTER

to OFF.

EMERGENCY STOP

ANTI-RESTART MASTER

to ON.

ANTI-RESTART MASTER

to START.

button up.

to

P/N 0191482

11 - 1

11. TROUBLESHOOTING

TB 120 OPERATOR’S TROUBLESHOOTING CHART (cont.)

PROBLEM CAUSE REMEDY

Engine will not start from the

platform-control box

(Continued)

Engine starts from the
platform-control box but no
other functions work.

Cannot raise or extend the
main boom.

Jerky platform movement
during extension.

Cannot attain maximum
speed (3 mph, 4.8 km/hr).

Tilt alarm does not work. Booms are completely down

Boom raises but will not stay
elevated.

Front wheels do not turn
during STEER RIGHT or
STEER LEFT.

.

3. The

BREAKER

control box, and/or the

SYSTEM

the ground-control box, has
tripped. (Engine will not
crank.)

4. Out of fuel. (Gasoline or
diesel engine cranks but will
not start.)

5. LPG OPTION.

FUEL

control box is set wrong.
(Engine cranks but will not
start.)

AC GENERATOR option only:
The
switch is set to
GENERATOR.

1. Rear axles not extended. Extend rear axles.

2. Pin lock not installed. Install pin lock.
Loose cables. Report problem to a trained & qualified service

1. Booms are not completely
down and completely
retracted.

2.

SELECTOR VALVE

3.

and completely retracted. (Tilt
alarm is not designed to work
under these conditions as a
convenience to personnel
loading and unloading TB 120
onto/from transport vehicle.)

Manual bleed-down valve is
open.

1. Drive controller must be in
DRIVE FORWARD or DRIVE
REVERSE for steer wheels to
turn.

2. TOW OPTION machines
only: The

VALVE

MAIN CIRCUIT

, on the platform-

circuit breaker, on

switch on the ground-

MACHINE/GENERATOR

HIGH RANGE SPEED

DRIVE RANGE

STEERING FLOAT

is open.

MAIN

is down.

set to LO. Set

Push the circuit breaker button(s) in. If the
button pops out again, refer the problem to a
qualified service technician.

Add fuel to tank then alternately crank engine
for 20 seconds and let starter motor cool for
60 seconds.

A.

FUEL

Set

L.P.-GAS or GASOLINE.

B.

Check the fuel gauge, on top of the tank, to

see if there is fuel in tank.

C.

For L.P.-GAS only: Check to see that fuel

valve, on top L.P. tank, is open.

D.

Alternately crank engine for 20 seconds

then let starter motor cool for 60 seconds.
Set the

MACHINE.

technician.
Completely lower & completely retract the

booms.

Pull the

VALVE

DRIVE RANGE

Extend and raise the main-boom a little above
horizontal.

Close the manual bleed-down valve.

Push drive controller slightly forward or
backward when using STEER RIGHT or
STEER LEFT.

Close the

switch (ground-control box) to

MACHINE/GENERATOR

HIGH RANGE SPEED SELECTOR

up.

to HI.

STEERING FLOAT VALVE

switch to

.

11 - 2

P/N 0191482

AC GENERATOR



CAUTION

Do not use the AC GENERATOR unless the
hydraulic oil is over 70°F (21°C). The output
voltage of the generator depends on the
temperature of the hydraulic oil. Temperature
below 70°F (21°C) will cause dangerously low
output voltages that can burn out some kinds of
electrical equipment.

12. OPTIONS

12. OPTIONS

NOTE: To energize the two platf or m electrical
outlets, the power cord (3) fr om the platform
outlets must be plugged into t he receptacle on
the generator (4).

The hydraulically powered, 120 V ac generator
can be used anytime the TB 120 engine is
running and the TB 120 is completely stationary.
Turning the generator on stops all machine
movement.



AIR LINE TO PLATFORM

The input to the air line is on the bottom left-rear
of the turntable.

Set the MACHINE/GENERAT OR switch (1) to
GENERATOR and a total of 2 kW, continuous
duty, 120 V ac power is available from the two
electrical outlets (2) under the platform-control
box or the electrical outlet on the end of t he
generator housing.

P/N 0191482

The outlet is on the platfor m m ounting frame.
The maximum safe

air line is 250 psi (1725 kPa).

working pressure for the

12 - 1

12. OPTIONS

CAUTION

Water or anti-freeze solution in the air line might
damage some air tools. If you use the air line to
conduct water or anti-freeze solution be sure to
drain and blow out the air line before attaching
air tools.

The air line can be used to conduct air, water, or
anti-freeze solution. If you want to conduct ot her
liquids, contact the Snork e l Engineering
Department for com patibility information

To drain the air line:

1. Close the turntable end of the air line.

2. Open the platform end of the air line.

3. Raise the main boom slightly above the
horizontal.

4. Open the turntable end of the air line.

COLD WEATHER START KIT





Block Heaters

CAUTION

Unplug the block heater just before starting the
engine. That will keep you from dr iving off while
the heater is still plugged in.

5. Set the BATTERY switch to ON.
Start the engine fr om t he ground-control box in

the normal way. While the MASTER KEY
SWITCH is in START (and the eng ine is
cranking) press the COLD START button.
Pressing the COLD START button injects a
measured amount of ether int o t he intake
manifold regardless of how long you hold the
button in.

NOTE: Do not crank the engine longer than
20 seconds. If the engine does not st ar t, wait
two minutes then try again.



DRIVING LIGHTS

CAUTION

Together the four lights draw nine amperes. If
you work with the lights turned on and the engine
turned off, t he bat t eries can discharge to the
point they will not start the engine nor run the
EMERGENCY POWER hydraulic pump. If you
cannot leave the engine running while the lights
are on, start and run the engine at least 15
minutes in each hour.

The block heater in a Continental or Cum m ins
engine is a freeze-plug type block-heater. The
engine is heated by convection of water that is
warmed by the heater. The heater is located in a
freeze-plug hole just below the engine exhaust
manifold. If t he engine starting temperature is
expected to be 32°F (0°C) or below, plug the
power cord from the heater into 110 - 120 V ac,
600 watt source eight hours before starting the
engine.



Ether Injection

A Cummins diesel engine might have ether
injection instead of a block heater . Ether injection
should only be used to start a cold engine when
the ambient temperature is below 32°F (0°C).

Check to see that there is a can of ether installed
in the holder in the battery compartment . If there
is no can of ether:

1. Turn the BATTERY switch to OFF.

2. Unscrew the holding cup.

3. Put a can of ether in the cup.

4. Screw the cup firmly back into place.

12 - 2

Driving lights are for dr iving on dim ly lit
construction sites, they are not for driving on
public thoroughfares. T he LIGHTS switch on the
platform-control box turns the lights on and off.
For the lights to work, both t he BATTERY switch
and the MASTER KEY SWITCH must be ON.

P/N 0191482

FLASHING LIGHTS



The flashing lights alert people that the TB 120 is
present. The lights flash at about one flash per
second any time the engine is running. There is
no ON/OFF switch for the flashing lights, they
cannot be turned off while the engine is r unning.

HYDRAULIC SYSTEM COLD WEATHER



WARM-UP KIT

12. OPTIONS

MOTION ALARM



The motion alarm emits a loud
...beep...beep...beep..., at ground level, anytime

DRIVE/STEER

the
REVERSE. This alarm alerts people on t he
ground that the TB 120 is traveling along the
ground.

PLATFORM WORK LIGHTS



controller is in FORWARD or

The control switch for the HYDRAULI C SYSTEM
COLD WEATHER WARM-UP KI T is located on
the ground-control box near the

SWITCH

control box. When t he ambient air temperature is
below 32°F (0°C) and boom movement is
sluggish because of cold hydraulic oil, turn the

WARM-UP

temperature, in the hydraulic oil tank , reaches
50°F.

For the warm-up system to work, the engine
must be running and you must turn the

UP

started the engine. (If you started the engine
from the ground-control box, turn the
switch on from the ground-contr ol box. I f you
started the engine from the platform-control box,
turn it on there.)

While the warm-up system is O N, no m achine
movement is possible.

and/or on the left side of t he plat form-

switch to ON until the hydraulic oil

switch ON from the same station that you

NOTE: If you only have one
you must start the engine fr om the station
where the
want to use the

WARM-UP

WARM-UP

switch is located if you

MASTER KEY

WARM-

WARM-UP

WARM-UP

switch.

switch

The platform work lig ht s are located on top the
platform guard rail. For the lights to work the

BATTERY

switches, on the ground-control box, must be set
as indicated:

SELECTOR SWITCH
EMERGENCY STOP
MASTER KEY SWITCH

The toggle switch on the back of a light turns it
on.

If you want to change the direction a light points,
use two 1/2” box-end wrenches to loosen the
clamp immediately below the light, point the light
where you want it, then retighten the clamp.

switch must be ON and the following

.......PLATFORM

.......pulled out (on)

...ON

CAUTION

Incandescent lights draw three amperes (35
watts) each. Halogen lights draw four am peres
(50 watts) each. If you work with the lights t ur ned
on and the engine turned off , the batteries can
discharge to the point they will not start the
engine nor run the
hydraulic pump. If you cannot leave the engine
running while the lights are on, start and r un t he
engine at least 15 minutes in each hour.

EMERGENCY POWER

P/N 0191482

12 - 3

12. OPTIONS

SELF-CLOSING GATE



The self-closing g ate is designed to automatically
close after you enter or leave the platf or m. It
helps prevent people from falling off the platf or m.

1. Put the TB 120 into its stowed position.

2. Remove the tow bar (1) and tie rod weldment
(2) from the stor age cradles (3 typ.) and lay them
near the front of the chassis.

SPARK ARRESTOR



The spark arrestor prevents incandescent carbon
particles from coming out the tail pipe. Baffles in the
spark arrestor slow the flow of particles through the
exhaust system. The additional time spent in the
exhaust system lets the carbon completely burn
before it comes out the tail pipe.

TOW KIT



DANGER

Improper towing can cause a TB 120 to break
away from the towi ng vehicl e. A “runaway”
TB 120 can cause death or serious injury.

Do not tow a TB 120 faster than 10 mph (16
km/h). A TB 120 can behave erratically above
10 mph (16 km/h).

Check with the tow vehicle manufacture or
manufacturer's literature to be sure the
towing vehicle can safely tow and stop a
39,500 pound (17,917 kg) TB 120 on the
steepest grade and type of surface you will
encounter. Remember, the TB 120 does not
have brakes when it is towed.

3. Rotate the turntable ( 4 ) unt il t he counterweight
(5) is to the side of the chassis (6) .

DANGER

Death or serious injury can result from being
crushed between the counterweight and tow
vehicle. Do not attempt to attach the t ow bar
to the tow vehicle unless t he count erweight
is to the side.

When you tow the TB 120 around a corner or
a curve do not turn so sharply that either of
the tow bar chains is pul l ed t ight. If a chain is
pulled tight the steering mechanism might be
damaged or the tow vehicle and TB 120 might
jackknife.

12 - 4

P/N 0191482

12. OPTIONS

4. Attach the tow bar (7) to the towing lug (8) with
the tow pin (9) and snap pin (10).

5. Attach the tie rod weldment (11) to t he t ow bar
(7) and the right hand steering yok e ( 12) .

CAUTION

Be sure the tow bar chain (shown on the left side
of the photo) goes over the tie- r od weldment
(11). If the chain g oes under t he tie-rod
weldment (11) left-hand turns will be restrict ed
and the tie-rod weldment might be damaged
when slack is removed from the chain.

6. Attach the two tow bar chains (13 typ.) to the
tie down lugs (14 typ.).

7. Attach the ring-end (15) of the tow bar to the
tow vehicle (16).

10. Pull and twist the
(18) to its “up” position.

NOTE: The
should be as shown.

STEERING FLOAT VALVE

STEERING FLOAT VALVE

pin

DANGER

A “runaway” TB 120 can cause death or
serious injury. Disconnecting the disconnect­plates will allow the TB 120 drive wheels to
turn freely. Before proceeding, be certain the
tow bar is instal l ed and connect ed t o a
towing vehicle that can saf el y control both
itself and the TB 120. Be certain the tow
vehicle brakes are set.

8. Use
counterweight (17) back to the front of the
chassis.

9. Raise the platform appr oximately 3 feet (1 m)
to keep the platform from scraping the g r ound
when the TB 120 starts up a grade.

P/N 0191482

TURNTABLE SWING

to rotate the

12 - 5

12. OPTIONS

11. Remove the two bolts (19) that hold each
drive-wheel disconnect-plate (20).

12. Turn each disconnect-plate (20) over so that
the nipple (21) points inward, then retighten the
bolts (19).

DANGER

At the end of the tow, before you disconnect
the TB 120 from the towing vehicle, t urn the
disconnect-plates back over so the nipples
are out. This will prevent the TB 120 from
rolling when you disconnect it fr om t he tow
vehicle.

13. Reverse the above procedure at the end of
the tow.

12 - 6

P/N 0191482

13. FIRE FIGHTING & HAZARDOUS

13. FIRE FIGHTING

CHEMICAL CONTAINMENT

A TB 120 contains the following materials and
objects that potentially could become significant
fire or environmental hazards during t he lifetime
of a TB 120:

Anti-freeze (ethylene glycol)
Battery, lead/acid
Diesel fuel
Foam in tires
Gasoline
Hydraulic oil
Liquefied petroleum g as
Motor oil

The rest of this chapter list s manufacturers’
information you will need if you ever have to
control any of the above items during an upset or
emergency.

ANTIFREEZE



Fire extinguishing media

or CO2.

Special fire fighting procedures

may be ineffective on fire but can pr ot ect fire
fighters and cool closed containers. Use fog
nozzles if water is used. Do not enter confined
fire-space without full bunker gear. (Helmet with
face shield, bunker coats, gloves & rubber
boots). Use a NIOSH approved positive pressure
self-contained breathing appar at us. Keep
container tightly closed. Isolate f r om oxidizers,
heat & open flame.

Spill or leak

material & transfer to hood.

Waste disposal method

all vapors are gone. Dispose of remainder by
legally applicable methods.

BATTERY



Extinguishing media

CO2.

Special fire fighting procedures

pressure, self-contained breat hing apparatus.

Unusual fire and explosion hazards

and oxygen gases are produced in the cells
during normal battery operat ion ( h ydrogen is
flammable and oxygen supports combustion).
These gases enter the air thr ough the vent caps.
To avoid the chance of a fire or explosion, k eep
sparks and other sources of ignition away from
the battery.

Spill or leak

all sources of ignition. Contain spill by dik ing with
soda ash (sodium carbonate) or quick lim e
(calcium oxide). Cover spill with either chemical.

(UN 1993)

: Dry Chemical, foam,

: Water spray

: Small - mop up with absorbent

: Small - evaporate until

, LEAD/ACID

: Remove combustible materials and

(UN 2794)

: Dry chemical, foam, or

: Use positive

: Hydrogen

Mix well. Make certain mixture is neutral then
collect residue and place in a drum or other
suitable container. Dispose of as hazardous
waste.

Wear acid resistant boots, face shield, chemical
splash goggles, and acid resistant gloves. DO
NOT RELEASE UNNEUTRALIZED ACID!

Waste disposal method - Sulfuric Acid

Neutralize as above for a spill, collect residue,
and place in a drum or suitable container.
Dispose of as hazardous waste.

DO NOT FLUSH LEAD CONTAMINATED ACID
TO SEWER.

Waste disposal method - Batteries

lead smelter for reclam at ion following applicable
federal, state, and local regulations.

DIESEL FUEL



Extinguishing media

chemical, foam, or CO2.

Special fire fighting procedures

keep fire-exposed containers cool. If leak or spill
has not ignited, use water spray to disperse the
vapors and to provide protection for personnel
attempting to stop a leak. W ater spray may be
used to flush spills away from exposures.

Unusual fire and explosion hazards

of combustion may contain carbon monoxide,
carbon dioxide, and other toxic materials. Do not
enter enclosed or confined space without proper
protective equipment including respirat or y
protection.

Spill or leak

smallest area possible. Recover as much of the
product itself as possible by such methods as
vacuuming, followed by soaking up of residual
fluids by use of absorbent materials. Rem ove
contaminated items including contaminat ed soil
and place in proper containers for disposal.
Avoid washing, draining, or directing m aterial to
storm or sanitary sewers.

Waste disposal method

the recoverable product as possible. Dispose of
nonrecyclable material as a RCRA hazardous
waste by such methods as incineration,
complying with federal, state, and local
regulations.

FOAM IN TIRES



Extinguishing media

foam, or CO2.

Special fire fighting procedures

emergency personnel to a safe area.

(NA 1993)

: Use water spray, dry

: Use water to

: Contain spill immediately in

: Recycle as much of

: Wat er , dr y chemical,

: Evacuate non

:

: Send to

: Products

P/N 0191482

13 - 1

13. FIRE FIGHTING

Unusual fire and explosion hazards

fighters should use self- contained breathing
apparatus. Avoid breathing smoke, fumes, and
decomposition products. Use water spray to
drench smoldering elastomer. Pr oduct m ay melt ,
after ignition, to form flam m able liquid. Burning
produces intense heat, dense smoke, and toxic
gases, such as carbon monoxide, oxides of
nitrogen, and traces of hydrog en cyanide.

Spill or leak

inert solid material.

Waste disposal method

hazardous material. Dispose of material
according to any local, state, and federal
regulations.



GASOLINE

Extinguishing media

CO2.

Special fire fighting procedures

be ineffective to extinguish, but water should be
used to keep fire-exposed containers cool. I f a
leak or spill has not ignited, use water spr ay to
disperse the vapors and to protect personnel
attempting to stop a leak. W ater spray may be
used to flush spills away from areas of potent ial
ignition.

Unusual fire and explosion hazards

Flammable. Products of combust ion m ay contain
carbon monoxide, carbon dioxide and other toxic
materials. Do not enter enclosed or confined
space without proper protective equipment
including respiratory protection.

Spill or leak

before proceeding with clean up. Use appropriate
personal protective equipment during clean up.
Dike spill. Prevent liquid fr om entering sewers,
waterways, or low areas. Soak up with sawdust,
sand, oil dry or other absorbent material. Shovel
or sweep up.

Remove source of heat, sparks, flame, impact,
friction or electricit y including internal combustion
engines and power tools. If equipment is used for
spill cleanup, it must be explosion proof and
suitable for flamm able liquid and vapor.

NOTE: Vapors released from the spill may
create an explosive atmosphere.

Waste disposal method

transportation and disposal must be in
accordance with applicable federal, state,
provincial, and local regulations. Do not flush to
surface water or sanitary sewer system.

: Pick up and handle as any other

: Not considered a

(UN 1203)

: Dry chemical, foam, or

: Review fire and explosion hazards

: Treatment, stor age,

: Fire

: Water may

: Highly



HYDRAULIC OIL

Extinguishing media

chemical, foam, or CO2.

Special fire fighting procedures

foam may cause frothing . Use water t o keep fire­exposed containers cool. Wat er spray may be
used to flush spills away from exposures.

Unusual fire and explosion hazards

of combustion may contain carbon monoxide,
carbon dioxide, and other toxic materials. Do not
enter enclosed or confined space without proper
protective equipment including respirat or y
protection.

Spill or leak

smallest area possible. Recover as much of the
product itself as possible by such methods as
vacuuming, followed by soaking up of residual
fluids by use of absorbent materials. Rem ove
contaminated items including contaminat ed soil
and place in proper containers for disposal.
Avoid washing, draining or directing m at e r ial t o
storm or sanitary sewers.

Waste disposal method

the recoverable product as possible. Dispose of
nonrecyclable material as a RCRA hazardous
waste by such methods as incineration,
complying with federal, state, and local
regulations.



LIQUEFIED PETROLEUM GAS

: Contain spill immediately in

(UN 1270)

: Use water spray, dry

: Water or

: Products

: Recycle as much of

(UN

1075)

Extinguishing media

or BC fire extinguishers.

Special fire fighting procedures

gas. Use water to keep fire- exposed container s
cool. Use water spray to disperse unignited gas
or vapor. If ignition has occurr ed and no water
available, tank metal may weaken fr om over­heating. Evacuate area. If gas has not ignited,
LP-gas liquid or vapor may be dispersed by
water spray or flooding.

Spill or leak

of gas. Eliminate sour ces of ignition. Ventilate
the area. Disperse with water spray. Contact
between skin and these gases in liquid form can
cause freezing of tissue causing inj ury similar to
thermal burn.

Waste disposal method



MOTOR OIL

OIL (UN 1270) above.

: Keep public away. Shut off supply

: Water spray. Class A-B-C

: Stop flow of

: Controlled burning.

(UN 1270)

See HYDRAULIC

By itself, the liquid is expected to be a RCRA
ignitable hazardous waste.

13 - 2

P/N 0191482

INDEX

INDEX

A

Ac generator, 2-4, 12-1
Air filter gauge, 4-1, 10-8
Air line to platform, 12-1
Alarms, 10-8

motion, 2-5, 10-9, 12-3
start-up, 10-9
tilt, 2-5

audio, 2-2

EMS

Alternator, 5-1
Ambient air temperature, 3-1

gauge, 4-1, 10-8

AMPS

Anchorage points, platform, 1-2
ANSI Standard A92.5, 3-1
ANSI standard A92.5, vi
ANSI/NFPA 505, 1-1
ANSI/SIA A92.5, frontispiece, vi

ANTI-RESTART MASTER SWITCH

Antifreeze, 12-2, 13-1
Arrows

blue, 6-6, 7-8

yellow, 6-6, 7-8
Authorized operators, v, 1-1
AUTOMATIC SHUT-OFFS, 5-1
Axle weighs, 9-2
Axle/boom interlock, 10-6

AXLES

, 6-6

B

Banners, 1-2
Base boom, 3-5
Battery

charging, 1-3

fluid level, 10-4

hazard, as 13-1

terminals, 10-4

BATTERY

Billboards, 1-2
Birth defects, back cover
Block Heaters, 12-2
Blue arrows, 6-6, 7-8
Bolts & fasteners, 10-5
Boom

elevation, 3-1

movement times, 3-1

nomenclature, 3-5

welds, 10-6

BOOM SPEED

Boom-movement switches, 10-7

BOOMS/AXLES SWITCH

Bystanders, 1-1

switch, 6-6

, 6-2

, 6-2, 6-6

C

California Proposition 65, back cover
Cancer, back cover
Capacity placards, 1-2
Careless operators, v

CAUTION, v

Charging system, 10-8

, 6-4

Chassis

left side of, 3-5
nomenclature, 3-5
rear of, 3-5

right side of, 3-5
Chock, 9-1
Circuit breakers, 5-1
Clearance, 1-1
Climbing on guardrails, 1-2

COLD START

Cold weather start kit, 12-2
Congestion, 1-3
Connector, power-input, 2-4
Control stations, 7-1
Controls, 6-1
Conventions, type-style, v
Coolant, 3-2
Cowling doors, 9-3
Cowlings, 1-2
Crane, 1-2

button, 12-2

D

Daily inspection & maintenance, 7-1, 7-3
Daily inspection and maintenance table, 10-1

DANGER, v

Decals, 1-1, 1-3
Defective parts, 10-1
Diesel fuel, 13-1
Dipstick, 4-1, 10-3
Disconnect-plates, 12-5, 12-6
Dismounting, 1-3
Doors, 1-2

DRIVE RANGE
DRIVE/STEER

Drive-wheel disconnect-plate, 12-6
Driving lights, 2-1, 10-10, 12-2
Dual fuel, 7-2, 7-3, 7-9, 7-11

, 6-4

controller, 2-5, 6-6, 7-6, 7-8

E

Electric cords, entangled, 1-2
Electrical

hazard, frontispiece, i

outlet at the platform (GFCI), 7-8

outlets, 2-4

system, 3-1
Electrocution, 1-2

EMERGENCY BLEED DOWN

Emergency operation, 8-1

from the ground-control box, 8-3

from the platform-control box, 8-1
Emergency power motor/pump, 10-7

EMERGENCY POWER OPERATION
EMERGENCY STOP

EMERGENCY STOPPING, 7-1
Employers’ safety rules, v
EMS

audio alarms, 2-2

lights, 2-2

self-test, 2-2

TABLE, 2-3

switches, 2-1, 5-1, 6-2, 6-4

switches, 8-3, 8-4

, 6-2, 6-4

P/N 0191482

I - 1

INDEX

EMS

ENVELOPE
STATUS
WARNING

Engine

coolant, 10-3
data, 3-2
fuel level, 10-2
oil, 4-1, 10-2

charts, 3-2
pressure, 5-1

temperature, 5-1

ENGINE THROTTLE

Envelope management system, 10-11
Environmental operating ranges, 3-1
Equipment, modifying, 1-3
Ether Injection, 12-2
Ethylene glycol, 3-2, 10-3
Expansion plug, 10-3
Experienced repair personnel, 1-3

EXTEND

Extend & lock rear axles, 7-9
Extendible axles, 3-5
Extendible-axle interlocks, 2-3

lights, 2-2, 10-11

lights, 2-2, 8-2, 8-3

lights, 2-2, 8-2, 8-3

, 6-2, 6-4

, 7-7

F

Fall

arrest, 1-2
restraint, 1-2, 2-4, 2-5, 7-4, 7-5, 9-2

Falling hazards, 1-2

FILTER MINDER

Flagmen, 1-1
Flags, 1-2
Flashing lights, 2-3, 10-10, 12-3
Floor grating, 1-2
Foam in tires, 13-1
Foot switch, 2-4, 6-4, 6-5, 7-6, 10-9
Front

of chassis, 3-5
of turntable, 3-5

Fuel

gauge, 4-2
grade, 3-2
handling precautions, 1-3
leaks, 10-3
tank cap, 10-2
tank capacity, 3-1

FUEL

switch, 6-2, 7-2, 7-3, 7-9, 7-11

Funnel, 10-3

gauge, 4-1, 10-8

G

Gas Processors Association Standard 2140, 3-2
Gasoline, 13-2
Gate, 1-2

gravity, 2-4, 10-6
self-closing, 2-6, 10-6, 12-4

Gauges, 4-1

AMPS

, 10-8

see

engine oil,

FILTER MINDER

hydraulic-oil filter, 4-2
hydraulic-oil level, 4-3
hydraulic-oil temperature, 4-3

TEMPERATURE

General specifications, 3-1
Generator, ac, 2-4, 12-1
GFCI outlet, 2-4, 5-2, 7-8, 10-9
Gloves, rubber, 1-3
Government safety rules, v
Grade, 1-3, 9-1
Gradeability, 3-1
Gravity gate, 2-4
Ground

clearance, 3-1
Fault Circuit Interrupt,
level, 1-2
pressure, 3-1
rough, driving over, 1-1
soft, 1-2

GROUND OPERATION

Ground-control box, 6-2, 6-3, 10-8
Guardrail system, 1-2
Guardrails, 2-5, 10-6

climbing on, 1-2

Guards, protective, 1-2

dipstick

, 10-8

, 4-3

see

GFCI outlet

switch, 2-4, 6-2, 7-6

H

Halogen lights, 12-3
Hazard cla ssification, 1-1
Hazardous location, 1-1
Hazards, 1-1

falling, 1-2

tipover, 1-2
Headlights, 2-1
Height, 3-1

HIGH RANGE SPEED SELECTOR VALVE

Hoist, 1-2
Horn, tilt-alarm, 2-6

HORN

, 2-5, 6-4
Horseplay, 1-1
Hoses, entangled, 1-2
HOT level, 10-3

, 6-4, 6-6

I - 2

P/N 0191482

Hydraulic oil, 3-1, 13-2

filter gauge, 4-2
leaks, 1-3, 10-4
level, 10-4
level gauge, 4-3
maximum temperature (at tank), 3-1
recommended type, 3-1
system capacity, 3-1
tank capacity, 3-1
temperature, 10-4
temperature gauge, 4-3

Hydraulic system cold weather warm-up kit, 12-3

I

Incandescent lights, 12-3
Inner intermediate boom, 3-5
Inspection

chart, placards & decals, 10-12
drawing, placards & decals, 10-13
pre-start, v, 1-1
work place, v, 1-1

M

M.S.A.D., frontispiece

MACHINE/GENERATOR

Main boom, 3-5

MAIN BOOM EXT./RET
MAIN BOOM EXTEND/RETRACT
MAIN BOOM LIFT

Maintenance, general statements, v
Malfunctioning machine, v
Malfunctions, v, 10-1
Management, 1-2
Manual bleed-down valve, 8-5

MASTER KEY SWITCH

Mechanic, trained, vi
Modifications, v
Modifying equipment, 1-3
Motion alarm, 2-5, 10-9, 12-3
Motor oil, 13-2
Mounting, 1-3
Moving the platform, 7-5
Moving the TB 120, 7-8

switch, 2-4, 10-9, 12-1

, 6-2, 7-7

, 6-2, 7-7

, 6-2

INDEX

, 6-4

J

Jack, 1-2
Jack shoe plate , 7-10, 7-13
Jerking controls, 1-2
Jumping off machine, 1-3

L

Ladders, 1-2
Lag times, 6-2, 6-4, 8-3
Lanyard anchor points, 2-5, 10-6
Leaks, hydraulic oil, 1-3
Left side

of chassis, 3-5

of turntable, 3-5
Length, 3-1
Level ground, 1-2
Level sensor, 10-9

LIFT

, 7-7

LIFT/SWING

Lights

driving, 10-10, 12-2

EMS

ENVELOPE
STATUS
WARNING

flashing, 2-3, 10-10, 12-3

halogen, 12-3

incandescent, 12-3

platform work, 2-5, 10-10, 12-3

tilt-alarm warning, 2-6

LIGHTS

Liquefied petroleum gas, 13-2
Loading ramp, 9-1
Location of personnel, 1-3
Loose objects, 1-1
LPG tanks, 4-2, 10-2

controller, 6-6, 7-6

, 2-2

, 2-2, 10-11

, 2-2, 8-2, 8-3

, 2-2, 8-2, 8-3

switch, 12-2

N

Nomenclature, 3-5
Number of occupants, 3-1

O

Occupants, number of, 3-1
Oil

filter capacity, 3-2
funnel, 10-3
grade, 3-2
pressure, engine, 5-1
sump capacity, 3-2
weight, 3-2

Operating

instructions, v

temperature, 3-2, 4-3
Operation, 7-1
Operators, careless, qualified, untrained, v
Options, 12-1
OSHA, v, vi

29 CFR 1910.67, 3-1

29 CFR 1926.556, 3-1
Outer intermediate boom, 3-5
Outlets, electrical, 2-4
Overall dimensions, 3-3
Overhead obstructions, 1-2
Override the platform-control box, 2-1, 7-1
Overriding safety features, 1-3

P

Parts, Snorkel, 1-3
Placards, 1-1, 1-3

and decals inspection chart, 10-12, 10-14

drawing, 10-13, 10-15
Planks, 1-2
Platform

anchorage points, 1-2
gravity gate, 10-6
guardrail system, 2-4

P/N 0191482

I - 3

INDEX

height, 3-1
materials on, 1-1
reach, 3-1
steadying, 1-1
work lights, 2-5, 10-10, 12-3

PLATFORM LEVEL
PLATFORM ROTATION

Platform-control box, 6-4, 6-5

overriding, 7-1

switches and alarms, 10-9
Platform-moving switches, 2-4, 6-2, 7-6, 10-8, 10-9
Power-input connector, 2-4
Precautions

dismounting, 1-3

general safety, 1-2

operator general, 1-2

operator maintenance, 1-3

personnel, 1-2

stopping, 1-3
Pre-start

conditions, 7-1, 7-3

inspection, v
Primary fall protection, 1-2
Proposition 65, back cover

, 6-2, 6-4, 7-7

, 6-2, 6-4, 7-7

Q

Qualified

maintenance person, 1-1

operators, v

person, v

trained maintenance personnel, v

R

Radiator cap, removing, 1-3
Ramps, 9-1
Rear

of chassis, 3-5

of turntable, 3-5
Regulations, local, 1-1
Replace an LPG tank, 10-2
Reproductive harm, back cover

RESET

Responsibilities of parties, vi
Retract & lock rear axles, 7-11
Riders, 1-1
Right side

Road signs, 1-1
Rope, entangled, 1-2
Rotation-bearing bolts, 10-5
Rubber straps, 9-3
Running time, 3-2

button, 4-1, 10-9

of chassis, 3-5

of turntable, 3-5

S

Safety

decals, 1-3
devices, 2-1
features, overriding, 1-3
rules, Employers’, v

rules, Government, v
Safety-wired bolts, 10-5
Scaffold Industry Association, vi
Securing to a transport vehicle, 9-2

SELECTOR SWITCH

Self-closing gate , 2-6, 10-6, 12-4
Sensor

level, 10-9

tilt alarm, 2-6
Serial-number locations, 3-5
Side, 1-3
Signs, v

road, 1-1
Siren, tilt-alarm, 2-6
Slide pads, 10-10
Slopes, 1-1, 1-3
Snagged platform, 1-2
Snorkel address, vi
Soft ground, 1-2
Spark arrestor, 12-4
Specifications, 3-1
Speeds, 1-1
Spring washers, 10-10, 10-11
Starting, 1-3
Starting from the ground-control box, 7-1, 7-2
Starting from the platform-control box, 7-3, 7-4
Start-up alarm, 10-9
Steer wheels, 3-5
Steering, 7-8

STEERING FLOAT VALVE

Steps, 9-1
Stowed position, 1-3, 7-5, 9-1
Stowing, 9-1
Structural damage, 10-6
Stunt driving, 1-1
Sudden stops, 2-4
Sulfuric acid, 1-3
Surface, 1-3

SWING, 7-7

, 6-2

, 12-5

T

Taillights, 2-1
Tailswing, 3-1
Temperature

ambient air, 3-1

engine, 5-1

operating, 3-2

TEMPERATURE
TEST

button, 10-9
Thunderstorms, 1-2
Tie rods, 9-3
Tie-down lugs, 9-3

gauge, 4-3

I - 4

P/N 0191482

Tilt alarm, 2-5, 2-6

horn, 2-6
sensor, 2-6
siren, 2-6

warning light, 2-6
Tip boom, 3-5
Tipover hazards, 1-2, 7-5, 7-11, 8-2, 8-4
Tires, 3-1, 10-5
Tow kit, 12-4
Towing, 9-4
Traffic-flow patterns, 1-1
Trailering, 9-1
Trained, 1-1

mechanic, vi

operators, v
Transport device, 1-1
Transport trailer, 9-1
Transporting, 9-1
Travel speeds, 1-3, 3-1
Troubleshooting, 11-1
Turning, 1-1

radius, 3-1
Turntable

front of, 3-5

left side of, 3-5

nomenclature, 3-5

rear of, 3-5

right side of, 3-5

TURNTABLE SWING

Type-style, conventions, v

, 6-2, 7-7

W

WARM-UP

Warranty, inside back cover
Water, 12-2
Weight, 3-1
Welds, 10-6
Wheel load, 3-1
Wheel nuts, 10-5
Wheelbase, 3-1
Whiffles, 10-10
Width, 3-1
Wind, 1-2

loading ,1-2

speed, 3-1
Wire ropes, 10-10
Wire-ties, 9-4
Wiring box, 5-2
Wiring harnesses, 10-3
Work load, 3-1
Work-place

inspection, v

practices, 1-1
Working envelope, 3-4
Working height, 3-1
Written consent to modify, v

switch, 12-3

Y

Yellow arrows, 6-6, 7-8

INDEX

U

Uneven surfaces, 9-1
Unrestricted platform capacity, 1-2, 3-1
Unrestricted rated work load, 3-1
Untrained operators, v
Uses of boom, 1-2

V

Visibility, 1-3

P/N 0191482

1 - 5 (1 - 6 blank)

I - 5

LIMITED WARRANTY

Snorkel warrants each new machine manufactured and sold by it to be free from defects in material and
workmanship for a period of one (1) year from date of delivery to a Customer or for one year after the m ac hi n e
has been placed in first service in a Dealer rental fleet, whichever comes first. Any part or parts which, upon
examination by the Snorkel Service Department, are found to be defective, will be replaced or repaired, at th e
sole discretion of Snorkel, through its local Authorized Dealer at no charge.

Snorkel further warrants the structural components; specifically, the mainframe chassis, turntable, booms and
scissor arms, of each new machine manufactured by it to be free from defects in material and workmanship
for an additional period of four (4) years. Any such part or parts which, upon examination by the Snorkel
Service Department, are found to be defective will be replaced or repaired by Snorkel through its local
Authorized Dealer at no charge; however, any labor charges incurred as a result of such replacement or repair
will be the responsibility of the Customer or Dealer.

The Snorkel Service Department must be notified within forty-eight (48) hours of any possible warranty
situation during the applicable warranty period. Personnel performing warranty repair or replacement must
obtain specific approval by Snorkel Service Department prior to performing any warranty repair or
replacement.

Customer and Dealer shall not be entitled to the benefits of this warranty and Snorkel shall have no obligations
hereunder unless the "Pre-Delivery and Inspection Report" has been properly completed and returned to the
Snorkel Service Department within ten (10) days after delivery of the Snorkel product to Customer or Dealer's
rental fleet. Snorkel must be notified, in writing, within ten (10) days, of any machine sold to a Customer from
a Dealer's rental fleet during the warranty period.

At the direction of the Snorkel Service Department, any component part(s) of Snorkel products to be replaced
or repaired under this warranty program must be returned freight prepaid to the Snorkel Service Department
for inspection. All warranty replacement parts will be shipped freight prepaid (standard ground) from the
Snorkel Service Department or from Snorkel's Vendor to Dealer or Customer.

REPLACEMENT PARTS WARRANTY

Any replacement or service part made or sold by Snorkel is not subject to the preceding
beyond the normal warranty period of the machine upon which the part was installed.

THIS WARRANTY EXCLUDES AND SNORKEL DOES NOT WARRANT:

1. Engines, motors, tires and batteries which are manufactured by suppliers to Snorkel, who furnish their
own warranty. Snorkel will, however, to the extent permitted, pass through any such warranty protection
to the Customer or Dealer.

2. Any Snorkel product which has been modified or altered outside Snorkel's factory without Snorkel's
written approval, if such modification or alteration, in the sole judgment of Snorkel's Engineering and/or
Service Departments, adversely affects the stability, reliability or service life of the Snorkel product or
any component thereof.

3. Any Snorkel product which has been subject to misuse, improper maintenance or accident. "Misuse"
includes but is not limited to operation beyond the factory-rated load capacity and speeds. "Improper
maintenance" includes but is not limited to failure to follow the recommendations contained in the
Snorkel Operation, Maintenance, Repair Parts Manuals. Snorkel is not responsible for normal
maintenance, service adjustments and replacements, including but not limited to hydraulic fluid, filters a nd
lubrication.

4. Normal wear of any Snorkel component part(s). Normal wear of component parts may vary with the
type application or type of environment in which the machine may be used; such as, but not limited to
sandblasting applications.

5. Any Snorkel product that has come in direct contact with any chemical or abrasive material.

6. Incidental or consequential expenses, losses, or damages related to any part or equipment failure,
including but not limited to freight cost to transport the machine to a repair facility, downtime of the
machine, lost time for workers, lost orders, lost rental revenue, lost profits or increased cost.

This warranty is expressly in lieu of all other warranties, representations or liabilities of Snorkel, either
expressed or implied, unless otherwise amended in writing by Snorkel's President, Vice
President-Engineering, Vice President-Sales or Vice President-Marketing.

SNORKEL MAKES NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION OF THIS LIMITED
WARRANTY. SNORKEL MAKES NO IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE AND DISCLAIMS ALL LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES, INCLUDING BUT NOT LIMITED TO INJURY TO PERSONS OR PROPERTY.

The Customer shall make all warranty claims through its local Authorized Dealer and should contact the
Dealer from whom the Snorkel product was purchased for warranty service. Or, if unable to contact the Dealer,
contact the Snorkel Service Department for further assistance.

Limited Warranty

Effective July 1995

CALIFO RNIA

Proposition 65 Warning

Battery posts, terminals and related accessories contain lead
and lead components, chemicals known to the State of
California to cause cancer and birth defects or other
reproductive harm. Wash hands after handling.

CALIFORNIA

Proposition 65 Warning

Diesel and gasoline engine exhaust and some of its constituents
are known to the State of California to cause cancer, birth
defects or other reproductive harm.

© Snorkel — all rights reserved Printed in USA