Ransomes G - PLEX WD series, G - PLEX ZV series, G - PLEX DP series Service Course Manual

Service Course Manual

G - PLEX

WD, ZV & DP SERIES

WARNING: If incorrectly used this machine can cause severe
injury. Those who use and maintain this machine should be
trained in its proper use, warned of its dangers and should
read the entire manual before attempting to set up, operate,
adjust or service the machine.

®

GB

SECTION 1

SPECIFICATIONS

E NG IN E S P E CIF IC A T ION

TY PE :T Y PE : K ubota 15.5 KW @ 3600 R P M,

3 cylinder Dioes el engine, 4
s troke, wate r c ooled, 719 cc

with 12V electric s tart.
Model: D722-E
Ma ximum S pe ed: 34 00 R P M (N o load)
Idle S pe e d: 15 00 R P M
Oil S ump C apacity:3.2 litre s
F iring O rder: 1, 3, 4, 2.
F uel: No . 2-D Die se l fuel ( AS T M D 97 5)

E NG IN E S P E C IF IC A T ION

TY PE :T Y PE : B riggs & S tratton 13.5K W @

36 00 R P M, V twin gasoline

engine, 4 stroke , air cooled,

719cc with 12V electric sta rt.
Model: V a ngua rd 3 5 04 4 7 T y pe 12 94
Ma ximum S pe ed: 34 00 R P M (N o load)
Idle S pe e d: 15 00 R P M
Oil S ump C apacity:1.4 litre s
F ue l: Unle a ded G a s oline Minimum 85

octane

MA C HINE S P E C IF IC A T ION

F ra me c ons truction:

He a vy duty fa brica te d s teel

cha s s is .
Transmission:

V a ria ble dis pla ce me nt

hydros tatic pump with high

s pee d low torque whe el motors.

C u tting unit drive :

Dire ct drive hydros tatic and ree l

drive pumps , bi-dire ctiona l

hydra ulic gea r motor with re el

control va lve a nd ba ck la p c ontrol

va lve.
S peeds:
C utting: 6 km/h
Transport: 12 kp/h
R evers e: 3 kp/h
S teering: R e ar W hee l S tee ring. P owe r

S teering, 2.5 turns lock to lock

33 0mm dia . S tee ring W he el

G r ound pres s ure: 1.0 kg/cm

B ra kes , S e rvice : P os itiv e hydos ta tic braking.
P arking: 152 mm Caliper Disk

C apacities:
C ooling S y stem: 3. 8 litres

F ue l T a nk : 31 litres

Hy dra ulic T a nk: 18 . 2 litres
T ota l S y stem 25. 7 litres

B a tte ry: 12 volt, T ype 09 3

Alterna tor Die s e l 4 0a mp

G a s oline 15 a mp

C UT T ING U NIT

Type: T hre e 55 9 mm wide s tee ra ble

floating he a d.

R eel: 127mm dia meter, 7 / 9 / 11

knife.

R olls: S mooth re ar roll, smo oth or

groove d front /rea r rolls optional.
B edk nife to ree l
adjustment: O ppos e d s et s cre w.
He ight of c ut
adjustment: Micr o-a djusters on front roll.
height of c ut: 2 .5 mm to 1 6mm S ta ndard blade

2mm to 1 6mm T ourna me nt

blade.

DIME NS IONS

Width of cut: 1.57 metres
O ver all width with re els : 1. 9 me tres
O ve ra ll he ight: 1. 3 metres
O ve rall length with re e ls : 2. 1 metres
O vera ll length with c atche rs : 2. 5 me tres
O ve ra ll weight of ma c hine
With R ee ls

Diesel: 630kg

G asoline: 574kg
W ithout R e els

Diesel: 535kg

G asoline: 478kg

W hee l T ra ck : 1.2 metres
Whee l Bas e: 1.3 metres

SERUSSERPERYT

tcudorP

leehWtnorF leehWraeR

eziSeryT epyTeryTerusserPeryTeziSeryT epyTeryTerusserPeryT

IIIxelP-G021-00.01x02

rp2htoomSnatiTisp9 rab26.0

021-00.01x02

rp2htoomSnatiTisp9 rab26.0

1

emaNenihcaM

##seireS

noitareleccAmrA/dnaH

level

HRroHLxaM

s/msnoitareleccA

2

qeAXqeAY qeAZ

2.344.262.1

eulaVtnanimoD 2.3

emaNenihcaM

##seireS

ydoBelohW
noitareleccA

level

noitacoLroolF

s/msnoitareleccA

2

noitacoLtaeS

s/msnoitareleccA

2

xy zxyz

naeM4320.0 9940.0 901.0 0500.0 5520.01610.0

V I B R A T I O N L E V E L

T he mac hine was tes ted for whole body and hand/
a rm vibra tion leve ls . T he ope rator wa s s e ated in the
norma l opera ting pos tion with both ha nds on the
s teering mec hanis m. T he engine wa s running a nd
the c utting de vice wa s rotating with the ma chine
stationary.

S tanda rd IS O 5 349: 1 986 Mec ha nic a l v ibr ation .
G uidelines for th e mea s urement a nd the
as s es s m ent of hu ma n ex pos u re to h and ­tra n s m itte d v ib ra tio n.

S tanda rd I S O 26 31-1 : 198 5 E va lu ati on of h uma n
ex pos ur e to who le body vibration -- P art 1:
G enera l require ments .

C U T T IN G P E R F O R M A N C E

C utting F re quenc y

7-k nife reel - 7. 4mm a t 6km/h
9-k nife reel - 5. 7mm a t 6km/h
11 -knife reel - 4 .7mm at 6 km/h

S L OP E S

DO NO T U S E ON S L O P E S G R E A T E R T HA N 15°
T he s lope 15° was c alcula ted us ing s tatic stability
mea s ure ments a c cording to the require ments of
E N 8 36.

R E C O MM E N D E D L U B R I C A N T S

E ngine oil:

Diesel: S hould be to M IL - L -2 10 4 C

or to A.P .I. C las sification C D

G asoline: A.P.I. C las sifica tion S E /S F

Hy draulic O il: G re e ns C a re 68

G rease: L ithium bas e d.

ERUTAREPMET TYISOCSIVLIO

)F°93(C°4EVOBA03EAS

)F°93(C°4WOLEB 0 3-W01ro03-W5EAS

2

SECTION 2

CONTROLS

T

CONTROLS

Figure 11

1. Voltmeter

2. Hour Meter

3. Headlight Switch

4. Engine Oil Warning Light

5. Ignition Switch

6. Throttle

7. Turf Protection System (optional)

8. Pre–Heat Switch and Glow Plug Light

9. Temperature Gauge And Warning Light

10. Reel Enable Switch

Voltmeter - indicates battery condition.
Headlight Switch - turns the headlights on and

off.

Engine Oil Warning Light - will come on when

the engine oil pressure is too low for
operation.

Ignition Switch - has four positions:

OFF - prevents all electrical functions
from operating. Switch must be in the
OFF position to remove the key.
ON - for normal operation.
START - engages the starter. Release
the key after engine starts (the switch
automatically returns to ON).
ACC. - has no function on this unit.

NOTICE

• If the engine fails to start, or if it

“dies” for any reason, the ignition
switch must be returned to the OFF
position before restarting is
attempted. This feature prevents
damage to the starter and flywheel
teeth that can occur if the

CONTROL PEDALS

The Direction/Speed Pedal (See Fig. 12) controls
speed and direction. Depress front of pedal to go
forward, depress back of pedal to go backward.
Increased movement of the pedal will increase speed.
To slow and stop the unit, release the pedal
completely. Proper braking is provided by hydrostatic
pressure. If more braking is required, press on the
brake pedal.

WARNING

• DO NOT attempt to force the direction
control pedal to the neutral (stop) position or
to change directions before coming to a
complete stop. Abrupt stops or changes in
direction may cause injury.

starter is engaged while the engine is running.

Wait 30 seconds before restarting
engine.

WARNING

• When the ignition is switched on, if the

units are in the lowered position they will
raise. It should be ensured that operators/
bystanders are clear of all moving parts
before the ignition switch is switched on.

Throttle - Push all the way forward for normal engine

operating speed, and all the way back for
idle.

Hour Meter - records the number of hours the engine

has run. Use the hour meter to manage a
good scheduled maintenance program (refer
to the Maintenance Guide).

Pre–Heat Switch and Glow Plug Light - With key

switch ON, push up/forward and hold the
pre–heat switch until the glow plug light
goes out.

Temperature Gauge and Warning Light - gauge

indicates coolant temperature and light
warns of overheat situation.

Turf Protection System - can be installed as an

option to warn the operator if a leak in the
hydraulic system is detected.

Reel Enable Switch - This switch must be in the on

position (1) in order for the reels to rotate.
The switch must be in the off position (0) for
the unit to be started.

1

2

Figure 12

1. Direction/Speed Pedal

2. Brake Pedal

NOTICE

• To reduce fatigue during
normal forward operation, the
operator’s heel should rest on
the floorboard next to the pedal

(not on the lower part of the
pedal).

PARKING BRAKE PEDAL

The Parking Brake can be engaged by
depressing the brake pedal until the unit
is at a complete stop. Once the unit is
stoped, push the parking brake latch
foward to hold the brake pedal.
Disengage the parking brake by
depressing and releasing the brake
pedal.

1

2

Figure 13

1. Brake Pedal

2. Park Brake Latch

PADDLE/FOOTSWITCH MOW/LIFT

The Mow/Lift Paddle/Footswitch
lowers and raises the cutting heads.
To Lower the Heads: Depress the
footswitch or operate the paddle. If reel
enable switch is on, reel rotation starts
when the heads are lowered.
To Raise the Heads: Depress the
footswitch or operate the paddle. Reel
rotation stops when the heads are
raised.

ZX Models Only.

NOTICE

• The paddle/footswitch will not operate
if the rear unit has not completed its
raise/lower cycle.

Figure 14

1. Paddle Control (Mow/Raise)

2. Footswitch Control (Mow/Raise)

3. Illustration of Paddle/Footswitch Operation

ADJUSTMENTS

WARNING

• Adjustment procedures must be

performed as specified by properly trained
service personnel ONLY. If assistance is
needed, contact your local Jacobsen
Textron Dealer.

• To avoid the possibility of serious injury,
switch the reel enable switch to the off
position, lower the heads, stop the
engine, remove the key and set the
parking brake BEFORE making any
adjustment.

• The rear swing out arm is to allow you
easy access to the rear cutting head.
The cutting heads MUST BE in the raised
position. DO NOT swing the arm out
with the cutting heads in the lowered
position.

• NEVER rotate the cutting reel by pushing
it with your hands or fingers. Fingers can
become caught between the reel and the
frame resulting in serious injury. Use a
ratchet with a 9/16” socket on the end of
the cutting head shaft to rotate the reel
during adjustment and testing (See Fig.

15).

1

Cutting Head Shown

with

Rear Rotary Brush

Accessory mounted

Figure 15

1. Rotate Cutting Reel with this Screw Head

BEDKNIFE ADJUSTMENT

For this adjustment, the backlap valve control
lever must be in the center “neutral” position
so that the reels can be rotated manually.

WARNING

· To avoid the possibility of serious
injury, NEVER attempt any cutting
head adjustment while the engine is
running.

Any adjustment to the clearance between the
reel blades and the bedknife should be done at
the leading end of the reel first (the end at which
each individual blade first crosses the bedknife).
Then at the opposite end of the reel.

1. Loosen the lower adjustment screws at
each end by turning them approximately
1/4 turn counterclockwise (See Figure

16).

2. While rotating the reel backwards, turn
the upper adjustment screws (leading
end first) until there is approximately
(.025mm-.075mm) clearance. After
adjusting both ends, recheck the leading
end.

NOTICE

• Too much clearance between the bedknife
and the blades will result in poor cutting

quality. Too little clearance will cause
excessive wear to the cutting edges and

may cause damage to the bedknife, reel
blades or other components.

1

2

Figure 16

1. Upper Adjustment Screw

2. Lower Adjustment Screw

3. Rotate the reel forward. The reel must turn
freely and you should just be able to hear
the reel blades making slight contact with
the bedknife.

4. After the bedknife is properly adjusted,
tighten the lower adjustment screw at each
end.

5. Test the cutting head by holding two strips
of newsprint perpendicular to the bedknife.
Rotate the reel with a wrench. The reel
must turn freely and each blade on the
reel should cut one of the two strips of
paper.

HEIGHT OF CUT

NOTICE

• All three cutting heads MUST be accurately
set at the same height of cut to insure an
even cut.

• Bedknife adjustment must be made before
setting the height of cut.

1. Set the height of cut on the gauge block by
turning the wingnut until the distance
between the bottom of the screw head and
the top of the gauge block equals the
desired height of cut (See Fig. 18).

2. Loosen the locking nut on one of the front
roller adjusting brackets just enough to
allow adjustment (See Fig. 17).

1

Cutting Head Shown

with

Rear Rotary Brush

Accessory mounted

Figure 17

1. Loosen Locking Nut

3. Hold the gauge block across the
bottom of both the front and rear
rollers near the roller adjustment
bracket and adjust the front roller
until the cutting edge of the
bedknife comes up to touch the
bottom of the gauge screw head
(See Fig. 18).

Front Roller

Rear Roller

Bedknife

Gauge Block

Gauge
Screw

Head

Set Height Of Cut

(Part No. 892010)

Figure 18

Height of Cut Adjustment

4. Tighten the locking nut and repeat
the procedure at the other end.
After adjustment has been made at
both ends, go back and recheck
both ends.

5. Make sure all three cutting heads
are set without changing the height
of the gauge screw.

SEAT ADJUSTMENT LEVER

Pull out on the adjustment lever located
under the left side of the seat. Slide the seat
to the desired position and release the lever.

1

Figure 19

1. Seat Adjustment Lever

OPERATION

840228

Read and familiarize yourself with the
following warnings before operating the unit.

WARNING

• This is heavy equipment. Improper

use, or operating the unit in areas
that may cause it to overturn, could
cause serious injury or death of you
the operator or bystanders.

• READ and understand the
operator’s manual before
attempting to operate this unit.

• Allow ONLY trained and authorized
persons to operate this unit.
NEVER allow children to operate
this unit. Local regulations may
restrict the age of the operator.

• Never operate the unit while people,
especially children, or pets are
nearby.

• Keep in mind that the operator or
user is responsible for accidents or
hazards occurring to other people
or property.

• BEFORE using the unit, always
inspect it for problems. If something
is wrong, DO NOT USE IT. Fix the
problem before using the unit to
prevent possible injury.

• WHILE using the unit, if something
is found to be wrong, STOP using
it. Fix the problem before the unit is
used again.

• Run the engine ONLY where there
is enough fresh air to prevent the
buildup of carbon monoxide fumes.
Carbon monoxide is colorless,
odorless and deadly. NEVER run
the unit in an enclosed space
where exhaust fumes will collect.

• NEVER use the unit in or near an
area where there may be explosive
dust or fumes. The electrical and
exhaust systems of this unit will
make sparks that can ignite
explosive materials.

• ALWAYS use good judgement
when operating on or near hills or
slopes. NEVER start or stop
suddenly, you may cause unstable
operating conditions. NEVER
change directions abruptly or make
sharp turns on slopes. ALWAYS
drive straight up and down the face
of slopes, NEVER across the face.

• When refueling, ALWAYS stop the
engine and do not allow sparks or
open flames anywhere near the
unit. DO NOT overfill the fuel tank.
Fuel is extremely flammable and
highly explosive under certain
conditions. Clean up any spilled
fuel and allow the vapors to
dissipate before operating the unit.
Store fuel in containers specifically

CONTROL ARM ADJUSTMENT

Support the control arm to avoid a sudden drop
while adjusting its height. Loosen the Locking
Lever to allow the steering wheel and control
arm to be adjusted up or down. Tighten the
locking lever when steering wheel is at the
desired position.

1

Figure 21

1. Control Arm Height Locking Lever

WARNING

• DO NOT attempt to adjust the control

arm position while the unit is moving.
Operator may loose control, causing
possible injury to themselves or
bystanders.

HYDRAULIC PUMP BYPASS VALVE

The Bypass Valve allows the unit to be pushed
or towed. Turn the handle on the bottom of the
pump counterclockwise (as viewed from the
bottom of the pump) to open the valve. After
moving the unit, close the valve by turning the
handle clockwise.

1

Figure 22

1. Bypass Valve Handle

NOTICE

• The bypass valve must be tightly
closed for normal operation or a
significant loss of speed will occur and

3

SECTION 3

ENGINE

STARTING THE ENGINE

When starting a diesel engine for the first time, after
prolonged storage or if the fuel tank is allowed to run
dry, the fuel system must be bled before attempting
to start the engine. Refer to Bleeding The Fuel
System in the maintenance and parts manual.

After bleeding the system (if required):

1. Operator must be properly seated in the
operator’s seat.

2. Make sure foot is off direction/speed control
pedal. The reel enable switch must be in
the off position before the engine will start.

3. Push hand throttle lever forward to a
“MIDDLE” position.

4. Insert key in ignition switch and turn to ON
position.

5. Push and hold the pre–heat switch forward.
The red indicator light will come on. When
the light goes out, release the pre–heat
switch and start the engine (If the engine
has been running and is already warm,
there should be no need to pre heat the
glow plugs).

6. After the engine starts, allow it to warm up
for at least one minute.

NOTICE

• The starter motor should never be run for
more than 10 seconds. If the engine does
not start after operating the starter for 10
seconds, stop the starter. Wait for 30
seconds and repeat the start sequence.

• Do not use ether or starter fluid; severe
engine damage may occur.

7. After the engine starts, check the following:

·Make sure the oil pressure light goes off

·The exhaust should be colorless or slightly
dark when engine is under load

NOTICE

• If the oil light or water temperature light and
buzzer come on during operation, stop the
engine immediately. To avoid serious engine
damage, find and fix the problem before
restarting.

ENGINE BREAK-IN

All new engines require a break-in period. The
service life of your engine is dependent upon how
your engine is operated during the first 50 hours
of operation.

1. ALWAYS idle and warm up your
engine for at least one minute. In cold
weather, allow the engine to warm up
completely before operating the unit.

2. NEVER overload the engine.

3. Change engine oil after the first 50
hours:
With the engine stopped and warm,
drain the crankcase and remove oil
filter. Install a new oil filter and refill the
crankcase with proper oil.

WARNING

· This oil change must be performed as

specified and only by properly trained
service personnel.

4. Refer to the Maintenance Guide for
future service intervals.

ENGINE ACCESS

The rear section of the unit can be raised for better
access to the engine. Loosen the two handknobs
above the rear fork. Raise the fuel tank frame.
Support it by pivoting the rod beneath the fuel tank
down and securing it in the cup next to the fork pivot
(See Fig. 23).

WARNING

· DO NOT remove the fuel tank cap while the

tank is in the raised position.

Figure 23

Rear Section of Unit Raised

DAILY SERVICE GUIDE

ENGINE OIL LEVEL

Damage to engines due to improper
maintenance or use of incorrect oil quality
and/or viscosity is not covered by the
engine warranty (refer to the engine
operator’s manual for crankcase capacity
and recommended oil grade and weight).
Unit must be on a level surface to obtain an
accurate oil level reading.The oil level must
be kept between the two marks on the
dipstick.

NOTICE

• DO NOT overfill. Engine
overheating and damage may
result.

Figure 26

1. Dipstick

1

Figure 27

1. Oil Filler Port

IMPORTANT!
WE RECOMMEND THAT THE FILTER ELEMENT BE REPLACED BEFORE ENGINE
PERFORMANCE IS AFFECTED. THIS MAY OCCUR AT 250 HOURS OF SERVICE UNDER VERY
DUSTY CONDITIONS OR AT 500 HOURS UNDER NORMAL OPERATING CONDITIONS. WE DO
NOT RECOMMEND CLEANING THE FILTER ELEMENT BECAUSE OF THE POSSIBILITY OF
DAMAGING IT.

CHECKING THE ELEMENT

To check for damage, pin holes, etc. shine a light source into the end of the element. If light
CANNOT be seen through the paper, a new element should be installed. Likewise, if pinholes of
bright light appear in the paper, the element should be replaced.

INSTALLING ELEMENT

1. Clean the dust from inside the filter housing with a damp cloth. Make sure that dust does

not enter the engine air intake.

2. Check the soft gasket material at both ends of the element to be sure it is not damaged.

3. Insert the open end of the element into the housing and press it onto the air intake pipe at

the back of the housing. Make sure the filter element fits over the pipe snugly and is pushed
all the way on to prevent any dust from getting past the filter.

4. Install the air cleaner cover over the element with the dust collector pointing DOWN (dust

collector empties automatically when properly installed). Secure the cover with the two wire
bails (See Fig. 29).

1

2

3

3

Figure 29

1. Cover

2. Dust Collector

3. Wire Bails

BLEEDING THE FUEL SYSTEM

WARNING

• This procedure must be performed as

specified and only by properly trained
service personnel.

The fuel system must be bled when:

•Starting the engine for the first time

•The fuel tank becomes completely
empty

•The engine has not been used for an
extended period of time

•The fuel filter and/or fuel lines have been

loosened, removed or replaced.
Primary fuel filter PN 825619
Secondary fuel filter element (See Fig.

25)

PN 840161

1. Fill the fuel tank.

2. Open the air vent on top of the fuel filter
(See Fig. 25).

3. Without preheating the glow plugs, turn
the ignition switch to START to operate
the fuel pump. Allow the starter to run the
pump until a steady stream of fuel is
coming out of the fuel filter air vent. Stop
the starter and close the air vent.

1

2

Figure 25

1. Fuel Filter Air Vent

2. Secondary fuel filter

4. Open the air vent on top of the
injection pump, open air vent only
when engine is NOT running (See
Fig. 26).

1

Figure 26

1. Injection Pump Air Vent

5. Without preheating the glow plugs,
turn the ignition switch to START to
operate the fuel pump. Allow the
starter to run the pump until a steady
stream of fuel is coming out of the
injection pump air vent. Stop the
starter and close the air vent.

WARNING

• Catch fuel and dispose of properly.

• To avoid a fire hazard, clean up any
spilled fuel.

4

SECTION 4

DRIVE TRAIN

THIS SECTION INTENTIONALLY LEFT BLANK

5

SECTION 5

BRAKE SYSTEM

P ARKING BRAKE PEDAL

The Parking Brake can be engaged by depressing the brake pedal until the unit is at a
complete stop. Once the unit is stoped, push the parking brake latch foward to hold the
brake pedal. Disengage the parking brake by depressing and releasing the brake
pedal.

It is important to note on the ZX series machines and machines that have been updated
using kit LMAB 973, the parking brake must be depressed to unable the machine to
start.

1. Brake Pedal

2. Park Brake Latch

1

2

6

SECTION 6

STEERING

THIS SECTION INTENTIONALLY LEFT BLANK

7

SECTION 7

WHEELS AND TYRES

TYRE PRESSURE

CAUTION

• Caution must be used when inflating a low tyre to recommended pressure. Check

pressure with a low pressure tire gauge before connecting an air hose to a partly inflated tire.

CAUTION

• Due to the low air volume requirements of a small tyre, over inflation may be reached in

a matter of a few seconds, which could cause the tire to explode.

COLD INFLATION PRESSURE

All Tires

9 PSI (60.3 kPa)

NOTICE

• Improper inflation will reduce tire life considerably

8

SECTION 8

HYDRAULICS FOR WB SERIES

8A. Repair, Service Tools and Materials............................................................... 8A-3

8B. Steering and Lift Hydraulic Circuit .................................................................. 8B-5

Specifications ........................................................................................... 8B-5

Hydraulic Circuit (Master) .......................................................................... 8B-6

All Drives In Neutral................................................................................... 8B-7

Steering To One side................................................................................. 8B-8

Front Units Raises..................................................................................... 8B-9

Centre Units Raise .................................................................................. 8B-10

Front Units Lower .................................................................................... 8B-11

8C. Cutting Circuit..............................................................................................8C-13

Specifications .........................................................................................8C-13

Circuit Description...................................................................................8C-13

Reels Engaged Forward .........................................................................8C-14

Backlap...................................................................................................8C-15

8D. T ransmission Circuit ....................................................................................8D-17

Specifications .........................................................................................8D-17

Circuit Description...................................................................................8D-17

Transmission Forward.............................................................................8D-18

Transmission Forward 3WD....................................................................8D-19

Transmission Reverse.............................................................................8D-20

All Drives in Neural ..................................................................................8D-21

8A

HYDRAULICS

SECTION 8A. REP AIR, SER VICE T OOLS AND MATERIALS

8A-3

Tools required: Standard automotive hand tools, including torque wrench, seal driv-

ers, circlip pliers and bearing driver.
Tachometer (Photo/Mechanical)

Obtain from local supplier or,
Graham and White Instruments
135 Hatfield Road
St. Albans
Herts.
AL1 4LZ
United Kingdom
Tel: [phone]

Part number Description

A810957 Hydraulic Flow meter equipped with loading valve.
A808947 Fittings kit (7/8” JIC to assorted ORFS sizes)
A810938 Pressure Gauge test kit. 1 x 0-6000psi gauge, 1 x 0-600psi gauge,

2 x rubber covers for gauges and 1 x micro-bore connector hose.
A810954 0-600psi pressure gauge
A810955 0-6000psi pressure gauge
A810939 Micro-bore connector hose for pressure gauges

2695493 Flushing Filter. Flow capacity 230 ltrs/min, pressure capacity

6085psi (414 Bar), filtration 10 micron and condition indicator gauge.

2695483 Replacement element for flushing filter

A810953 Belt tension tester

Cleaning Materials: Stoddard or equivalent solvent

Detergent and water

Loctite “Locquic” Primer “T”

Lubricants: See section 11

Other service items: Seal and repair kits (available from Textron distributors)

Liquid gasket

Loctite 242 Blue

8B

HYDRAULICS

SECTION 8B. STEERING AND LIFT CIRCUIT

8B-5

SPECIFICA TIONS

Pump: Charge pump of the Sundstrand Series 15 Transmission pump. 5.4 cc/rev 18.3 litres/

min at 3400rpm engine speed.
Steering valve: Eaton five port valve.
Steering Relief Valve:Implement valve fitted to the Sundstrand Series 15 Transmission pump.

69 bar (1000psi)
Speed restrictors: 1.27mm (0.050”) in both lines to centre unit ram, one being located in the Sequence

valve.

CIRCUIT DESCRIPTION

NOTE: All hydraulic pump outputs and pressures are given with the engine at maximum rpm and with the oil at
working temperature.

Oil is drawn into the charge pump from the hydraulic reservoir (Shell T ellus 46 grade or equivalent) via the 25
micron suction filter. The oil is displaced by the (5.4cc) gerotor pump at a rate of 18.3 litres/min, at an engine
speed of 3400 rpm.

From the pump the oil flows to the “P” port of the Eaton steering valve. When turning the steering wheel oil is
fed from the valve to the double acting ram at the rear of the machine. Oil displaced from the other side of the ram
returns to the hydraulic reservoir via port “T” of the steering valve. The maximum pressure available for steering
is 1000psi. An implement valve located in the Transmission pump controls this pressure.

If the steering wheel is not being turned then the oil flows out of steering valve from the “PB” port to the “P”
port of the lift valve. If the lift levers are not being used oil flows past the spools out of the “T” port of the lift
valve to the oil cooler and then on to the hydraulic reservoir.

When raising units the rear of the foot pedal is pressed which energises the lift valve solenoid thus moving the
spools to feed oil out of the “A” port opening the check valve as it does so. The oil then goes to the front rams,
which extend and raise the units. The flow combiner/divider ensures that the front rams lift at equal speed by
controlling the rate that oil is displaced from the rams. The oil also goes to the centre ram but as the sequence
valve is closed it prevents oil within the ram from being displaced so the unit cannot lift.
After a short delay the sequence valve opens allowing the centre unit to raise. The oil flow to the centre unit ram
and from the sequence valve is restricted to slow the raise speed. Oil displaced by the rams goes though valve
port “B” before returning to the oil cooler and reservoir .
If the Operator continues to press the foot pedal the pressure would build until the 1000psi implement relief
blows. When the pedal is released the oil is trapped between the rams and the check valve preventing the units
from dropping.

Pressing the front of the foot pedal energises the lower solenoid on the lift valve moving the spool and allowing
oil to flow out of port “B”. At the same time the check valve in port “A” is lifted off its seat via a pilot line. Oil
flows to the front rams via the flow combiner/divider ensuring the units lower at the same rate. Oil also flows to
the sequence valve but this is closed initially.
After a short delay the sequence valve opens and the centre unit lowers, it’s speed controlled by the restriction
created by the orifice in the line to the valve and another fitted in the line from the ram. Oil displaced from the
rams has to pass through the open check valve in port “A” before returning to the oil cooler and reservoir.

Flotation of the units whilst cutting is not restricted in any way by the rams as they locate in slots in the unit arms
allowing full articulation.

IMPORTANT NOTE: When turning the steering wheel on a continuous full lock the implement valve will blow
and this will prevent the lift circuit from working. This is a characteristic of the circuit that should not present a
problem when the machine is used as intended.

HYDRAULICS

SECTION 8B. STEERING AND LIFT CIRCUIT

8B-6

H

y

d

r

a

u

l

i

c

C

i

r

c

u

i

t

(

M

a

s

t

e

r

)

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

G

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

8B

HYDRAULICS

SECTION 8B. STEERING AND LIFT CIRCUIT

8B-7

A

l

l

d

r

i

v

e

s

i

n

n

e

u

t

r

a

l

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

HYDRAULICS

SECTION 8B. STEERING AND LIFT CIRCUIT

8B-8

S

t

e

e

r

i

n

g

t

o

o

n

e

s

i

d

e

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

8B

HYDRAULICS

SECTION 8B. STEERING AND LIFT CIRCUIT

8B-9

F

r

o

n

t

U

n

i

t

s

R

a

i

s

e

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

HYDRAULICS

SECTION 8B. STEERING AND LIFT CIRCUIT

8B-10

C

e

n

t

r

e

U

n

i

t

s

R

a

i

s

e

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

R

a

i

s

e

f

r

o

n

t

u

n

i

t

s

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

8B

HYDRAULICS

SECTION 8B. STEERING AND LIFT CIRCUIT

8B-11

F

r

o

n

t

U

n

i

t

s

L

o

w

e

r

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

HYDRAULICS

SECTION 8B. STEERING AND LIFT CIRCUIT

8B-12

R

e

a

r

U

n

i

t

s

L

o

w

e

r

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

8C

HYDRAULICS

SECTION 8C. CUTTING CIRCUIT

8C-13

SPECIFICA TIONS

Pump: Haldex Barnes Corporation W900 8cc/rev 27.2litres/min @ 3400rpm engine speed.
Cutter Relief valve: 207bar (3000psi)
Motors: Haldex Barnes Corporation W600 12cc Bi-directional 2190rpm @ 3400rpm engine

speed.

CIRCUIT DESCRIPTION

NOTE: All hydraulic pump outputs and pressures are given with the engine at maximum rpm and with the oil at
working temperature.

Oil is drawn into the cutting pump from the hydraulic reservoir (Shell T ellus 46 grade or equivalent) via the 25
micron suction filter. This oil is displaced by the twin gear pump (8cc) at a rate of 27.2 ltrs/min, at an engine
speed of 3400rpm.

From the pump the oil flows to the “P” port of the Reel drive valve. If reel drive is not enabled the oil passes
through the solenoid valve and returns to the hydraulic reservoir from the “T” port via the cooler.

If the Reel drive is enabled (and the units lowered) the solenoid valve closes and the oil then flows from “M” port
to the Reel motors via the back-lap valve. If forward drive has been selected the oil goes to the front right hand
unit, the front left hand unit and then to the centre unit before returning to the back-lap valve, the cooler and the
reservoir.

Within the Reel drive valve is a variable speed control that comprises a needle valve and a pilot operated spool
valve. Rotating the knurled head of the needle valve allows a proportion of the oil to return to the reservoir
reducing reel speed. The pilot operated pressure compensating spool valve ensures that the selected speed is
maintained regardless of changes in loading.

If one of the Reels becomes jammed by a shoe spike or tee peg then the pressure within the circuit will quickly
increase until it reaches 207bar (3000psi) at which point the relief valve will open allowing oil to return to the
reservoir via the cooler. All reels will then stop rotating.
SAFETY NOTE: T o avoid the possibility of serious injury, switch the reel enable switch to off, stop the engine,
remove the key and set the parking brake before attempting to release the obstruction. Never rotate the reel by
pushing with your hands or fingers as energy can be released suddenly resulting in serious injury. Instead use a
suitable length of softwood to ease the obstruction free.

HYDRAULICS

SECTION 8C. CUTTING CIRCUIT

8C-14

R

e

e

l

s

E

n

g

a

g

e

F

o

r

w

a

r

d

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

P

r

e

s

s

u

r

e

c

o

m

p

e

n

s

a

t

i

n

g

v

a

l

v

e

8C

HYDRAULICS

SECTION 8C. CUTTING CIRCUIT

8C-15

B

a

c

k

l

a

p

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

P

r

e

s

s

u

r

e

c

o

m

p

e

n

s

a

t

i

n

g

v

a

l

v

e

8D

HYDRAULICS

SECTION 8D. TRANSMISSION

8D-17

SPECIFICA TIONS

Pump: Sundstrand 15 series, 15 cc/rev. maximum, 51 litres/min @ 3400rpm engine

speed.
Charge (boost) pump: Integral part of transmission pump. 5.4cc/rev, 18.3litres/min @ 3400rpm

engine speed.
Charge relief valve: 10.3 bar (150psi)
Wheel motors: Parker Ross ME10 169cc
Optional 3WD: Parker Ross ME21 338cc

CIRCUIT DESCRIPTION

NOTE: All hydraulic pump outputs and pressures are given with the engine at maximum rpm and

with the oil at working temperature.

The foot pedal mounted on the right hand side of the platform is linked to the Transmission pump by
cable. A simple spring return system is provided to ensure the pump returns to a neutral position.
Movement of the pedal results directly in a corresponding movement of the transmission pump’s
swash-plate. The transmission system is not protected by any form of shock or relief valve. This is
considered unnecessary, as overloading the system will result in spinning the slick tyres.

Oil from the pump goes to a tee, which supplies both front motors before returning to the pump. The
front right hand motor has an oil shuttle that sets up an exchange of oil at a rate of 4 litres/minute
joining that going to the steering and lift circuit. This oil is replaced within the transmission pump by
cooler, filtered oil by the charge pump. This works whether forward or reverse drive is selected.

Third wheel drive is available as an optional accessory. A rear wheel motor of twice the capacity of
the front motors is connected in what is the return line to the pump in forward drive. As the oil has
already driven the front wheels in parallel this larger motor rotates at the same speed. A check valve
ensures that the rear motor can freewheel during severe hydrostatic braking on steep descents or
when reversing.

HYDRAULICS

SECTION 8D. TRANSMISSION

8D-18

T

r

a

n

s

m

i

s

s

i

o

n

F

o

r

w

a

r

d

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

8D

HYDRAULICS

SECTION 8D. TRANSMISSION

8D-19

T

r

a

n

s

m

i

s

s

i

o

n

F

o

r

w

a

r

d

3

W

D

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

HYDRAULICS

SECTION 8D. TRANSMISSION

8D-20

T

r

a

n

s

m

i

s

s

i

o

n

R

e

v

e

r

s

e

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

S

t

e

e

r

i

n

g

v

a

l

v

e

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

8D

HYDRAULICS

SECTION 8D. TRANSMISSION

8D-21

A

l

l

d

r

i

v

e

s

i

n

n

e

u

t

r

a

l

P

r

e

s

s

u

r

e

R

e

t

u

r

n

C

a

s

e

C

h

a

r

g

e

S

u

c

t

i

o

n

1

2

3

T

R

W

M

E

1

0

S

t

e

e

r

i

n

g

r

a

m

S

t

e

e

r

i

n

g

v

a

l

v

e

H

o

t

o

i

l

s

h

u

t

t

l

e

4

L

p

m

T

a

n

k

T

r

a

n

s

m

i

s

s

i

o

n

P

u

m

p

4

8

.

4

5

L

p

m

.

0

8

1

L

H

C

h

a

r

g

e

p

u

m

p

1

8

.

3

L

p

m

.

0

5

0

.

0

5

0

C

y

l

i

n

d

e

r

d

r

i

v

e

m

o

t

o

r

s

2

1

0

0

R

p

m

O

i

l

C

o

o

l

e

r

R

H

D

i

v

i

d

e

r

c

o

m

b

i

n

e

r

v

a

l

v

e

L

i

f

t

v

a

l

v

e

L

i

f

t

r

a

m

(

r

i

g

h

t

)

L

i

f

t

r

a

m

(

l

e

f

t

)

L

i

f

t

r

a

m

(

c

e

n

t

r

e

)

S

e

q

u

e

n

c

e

v

a

l

v

e

C

y

l

i

n

d

e

r

d

r

i

v

e

v

a

l

v

e

R

e

l

i

e

f

v

a

l

v

e

2

1

0

B

a

r

3

0

0

0

p

s

i

T

P

M

G

T

P

A

B

T

P

P

B

R

L

F

i

l

t

e

r

2

5

m

i

c

r

o

n

F

i

l

t

e

r

2

5

m

i

c

r

o

n

A

c

c

e

s

s

o

r

y

r

e

a

r

w

h

e

e

l

m

o

t

o

r

C

u

t

t

i

n

g

P

u

m

p

2

6

.

2

7

L

p

m

G

-

P

l

e

x

I

I

(

1

5

0

-

2

1

0

p

s

i

)

C

h

a

r

g

e

r

e

l

i

e

f

v

a

l

v

e

(

8

0

0

p

s

i

)

I

m

p

l

e

m

e

n

t

r

e

l

i

e

f

v

a

l

v

e

8

SECTION 8

HYDRAULICS FOR ZV SERIES

Master Hydraulic Schematic Diagrams

ZV Series machines fitted with pressure switch and variable needle valve.

8

SECTION 8

HYDRAULICS FOR DP SERIES

Hydraulic Schematic Diagrams

DP Series machines fitted with Bi-directional relief valve (no pressure switch, as
used with the new timed lift/lower pic module).

Hydraulic Circuit (Master)

G

Cutting

Pump

26.27 Lpm

G-PlexIII

(150-210 psi)

Charge relief

valve

(800 psi)

Implement

relief valve

TRW ME10

Steering ram

Steering

valve

Hot oil shuttle

4 Lpm

Tank

Transmission Pump

48.45 Lpm

.081

LH

Charge pump

18.3 Lpm

.050

Cylinder drive motors 2100 Rpm

Oil

Cooler

RH

Divider

combiner

valve

Lift

valve

Lift ram

(right)

Lift ram

(left)

Lift ram

(centre)

Cylinder drive

valve

Relief

valve

210 Bar

3000 psiTP

M

T P

A

B

T P

PB

R L

Filter

25 micron

Filter

25 micron

Accessory

rear wheel

motor

1

2

Sequence

valve

All drives in neutral

Pressure

Return

Case

Charge

Suction

123

TRW ME10

Steering ram

Steering

valve

Hot oil shuttle

4 Lpm

Tank

Transmission Pump

48.45 Lpm

.081

LH

Charge pump

18.3 Lpm

.050

Cylinder drive motors 2100 Rpm

Oil

Cooler

RH

Divider

combiner

valve

Lift

valve

Lift ram

(right)

Lift ram

(left)

Lift ram

(centre)

Cylinder drive

valve

Relief

valve

210 Bar

3000 psiTP

M

G

T P

A

B

T P

PB

R L

Filter

25 micron

Filter

25 micron

Accessory

rear wheel

motor

Cutting

Pump

26.27 Lpm

G-PlexIII

(150-210 psi)

Charge relief

valve

(800 psi)

Implement

relief valve

1

2

Sequence

valve

Steering to one side

Pressure

Return

Case

Charge

Suction

123

TRW ME10

Steering ram

Steering

valve

Hot oil shuttle

4 Lpm

Tank

Transmission Pump

48.45 Lpm

.081

LH

Charge pump

18.3 Lpm

.050

Cylinder drive motors 2100 Rpm

Oil

Cooler

RH

Divider

combiner

valve

Lift

valve

Lift ram

(right)

Lift ram

(left)

Lift ram

(centre)

Cylinder drive

valve

Relief

valve

210 Bar

3000 psiTP

M

G

T P

A

B

T P

PB

R L

Filter

25 micron

Filter

25 micron

Accessory

rear wheel

motor

Cutting

Pump

26.27 Lpm

G-PlexIII

(150-210 psi)

Charge relief

valve

(800 psi)

Implement

relief valve

1

2

Sequence

valve

Lift Units

Pressure

Return

Case

Charge

Suction

123

TRW ME10

Steering ram

Steering

valve

Hot oil shuttle

4 Lpm

Tank

Transmission Pump

48.45 Lpm

.081

LH

Charge pump

18.3 Lpm

.050

Cylinder drive motors 2100 Rpm

Oil

Cooler

RH

Divider

combiner

valve

Lift

valve

Lift ram

(right)

Lift ram

(left)

Lift ram

(centre)

Cylinder drive

valve

Relief

valve

210 Bar

3000 psiTP

M

G

T P

A

B

T P

PB

R L

Filter

25 micron

Filter

25 micron

Accessory

rear wheel

motor

Cutting

Pump

26.27 Lpm

G-PlexIII

(150-210 psi)

Charge relief

valve

(800 psi)

Implement

relief valve

1

2

Sequence

valve

Lower Units

Pressure

Return

Case

Charge

Suction

123

TRW ME10

Steering ram

Steering

valve

Hot oil shuttle

4 Lpm

Tank

Transmission Pump

48.45 Lpm

.081

LH

Charge pump

18.3 Lpm

.050

Cylinder drive motors 2100 Rpm

Oil

Cooler

RH

Divider

combiner

valve

Lift

valve

Lift ram

(right)

Lift ram

(left)

Lift ram

(centre)

Cylinder drive

valve

Relief

valve

210 Bar

3000 psiTP

M

G

T P

A

B

T P

PB

R L

Filter

25 micron

Filter

25 micron

Accessory

rear wheel

motor

Cutting

Pump

26.27 Lpm

G-PlexIII

(150-210 psi)

Charge relief

valve

(800 psi)

Implement

relief valve

1

2

Sequence

valve

Reels Engage Forward

Pressure

Return

Case

Charge

Suction

1

23

TRW ME10

Steering ram

Steering

valve

Hot oil shuttle

4 Lpm

Tank

Transmission Pump

48.45 Lpm

.081

LH

Charge pump

18.3 Lpm

.050

Cylinder drive motors 2100 Rpm

Oil

Cooler

RH

Divider

combiner

valve

Lift

valve

Lift ram

(right)

Lift ram

(left)

Lift ram

(centre)

Cylinder drive

valve

Relief

valve

210 Bar

3000 psiTP

M

G

T P

A

B

T P

PB

R L

Filter

25 micron

Filter

25 micron

Accessory

rear wheel

motor

Cutting

Pump

26.27 Lpm

G-PlexIII

(150-210 psi)

Charge relief

valve

(800 psi)

Implement

relief valve

Pressure

compensating

valve

1

2

Sequence

valve

Transmission Forward

Pressure

Return

Case

Charge

Suction

123

TRW ME10

Steering ram

Steering

valve

Hot oil shuttle

4 Lpm

Tank

Transmission Pump

48.45 Lpm

.081

LH

Charge pump

18.3 Lpm

.050

Cylinder drive motors 2100 Rpm

Oil

Cooler

RH

Divider

combiner

valve

Lift

valve

Lift ram

(right)

Lift ram

(left)

Lift ram

(centre)

Cylinder drive

valve

Relief

valve

210 Bar

3000 psiTP

M

G

T P

A

B

T P

PB

R L

Filter

25 micron

Filter

25 micron

Accessory

rear wheel

motor

Cutting

Pump

26.27 Lpm

G-PlexIII

(150-210 psi)

Charge relief

valve

(800 psi)

Implement

relief valve

1

2

Sequence

valve

Transmission Reverse

Pressure

Return

Case

Charge

Suction

123

TRW ME10

Steering ram

Steering

valve

Hot oil shuttle

4 Lpm

Tank

Transmission Pump

48.45 Lpm

.081

Steering valve

LH

Charge pump

18.3 Lpm

.050

Cylinder drive motors 2100 Rpm

Oil

Cooler

RH

Divider

combiner

valve

Lift

valve

Lift ram

(right)

Lift ram

(left)

Lift ram

(centre)

Cylinder drive

valve

Relief

valve

210 Bar

3000 psiTP

M

G

T P

A

B

T P

PB

R L

Filter

25 micron

Filter

25 micron

Accessory

rear wheel

motor

Cutting

Pump

26.27 Lpm

G-PlexIII

(150-210 psi)

Charge relief

valve

(800 psi)

Implement

relief valve

1

2

Sequence

valve

8

SECTION 8

HYDRAULICS - FN & FJ SERIES

Hydraulic Schematic Diagrams

FN & FJ Series machines fitted with new cutting and lift circuit (Plus 1 Controller)

Lift Cylinder (Right)

Lift Cylinder (Left)

Flow Divider

Combiner

Valve

Lift Cylinder (Centre)

Sequence

Delay

Valves

Lift/Lower

Reel Drive Motors

2000 - 2100 rpm

3

2

1

Reel
Drive
Valve

T

P

M

Oil

Cooler

Filter

25 µm

Filter

25 µm

Reservoir

Cutting

Pump

26.27 l/min

6.9 gal/min US

Charge Pump

18.3 l/min

4.9 gal/min US

Charge

Relief Valve

10-15 bar

150-210 psi

Implement

Relief Valve

55 bar
800 psi

Steering
Valve

R L

T P

Steering Cylinder

2 mm

(0.08”)

Hot Oil Shuttle

4 l/min

1 gal/min US

RH

LH

TRW Me10

Hydraulic Circuit

(Master)

Soft Drop

Valve

Lift Valve

T

P

BA

P

Backlap Valve

Relief
Valve

100 bar
1400 psi

Transport: 300 rpm

Mowing: 110-140 rpm

Reverse: 140-170 rpm

(actual measurements)

Transmission Pump

48.45 l/min

12.8 gal/min US

(Engine 3400 rpm)

(Idle 1400 rpm)

AB

A

B

Top Valve

Bottom Valve

A

B

Relief
Valve

125 bar
1800 psi

G

Lift Cylinder (Right)

Lift Cylinder (Left)

Flow Divider

Combiner

Valve

Lift Cylinder (Centre)

Sequence

Delay

Valves

Lift/Lower

Reel Drive Motors

2000 - 2100 rpm

3

2

1

Reel
Drive
Valve

T

P

M

Oil

Cooler

Filter

25 µm

Filter

25 µm

Reservoir

Cutting

Pump

26.27 l/min

6.9 gal/min US

Charge Pump

18.3 l/min

4.9 gal/min US

Charge

Relief Valve

10-15 bar

150-210 psi

Implement

Relief Valve

55 bar
800 psi

Steering
Valve

R L

T P

Steering Cylinder

2 mm

(0.08”)

Hot Oil Shuttle

4 l/min

1 gal/min US

RH

LH

TRW Me10

Soft Drop

Valve

Lift Valve

T

P

BA

P

Backlap Valve

Relief
Valve

100 bar
1400 psi

Transport: 300 rpm

Mowing: 110-140 rpm

Reverse: 140-170 rpm

(actual measurements)

Transmission Pump

48.45 l/min

12.8 gal/min US

(Engine 3400 rpm)

(Idle 1400 rpm)

AB

A

B

Top Valve

Bottom Valve

A

B

Pressure
Return
Case
Charge
Suction

All Drives in Neutral

Relief
Valve

125 bar
1800 psi

Lift Cylinder (Right)

Lift Cylinder (Left)

Flow Divider

Combiner

Valve

Lift Cylinder (Centre)

Sequence

Delay

Valves

Lift/Lower

Reel Drive Motors

2000 - 2100 rpm

3

2

1

Reel
Drive
Valve

T

P

M

Oil

Cooler

Filter

25 µm

Filter

25 µm

Reservoir

Cutting

Pump

26.27 l/min

6.9 gal/min US

Charge Pump

18.3 l/min

4.9 gal/min US

Charge

Relief Valve

10-15 bar

150-210 psi

Implement

Relief Valve

55 bar
800 psi

Steering
Valve

R L

T P

Steering Cylinder

2 mm

(0.08”)

Hot Oil Shuttle

4 l/min

1 gal/min US

RH

LH

TRW Me10

Soft Drop

Valve

Lift Valve

T

P

BA

P

Backlap Valve

Relief
Valve

100 bar
1400 psi

Transport: 300 rpm

Mowing: 110-140 rpm

Reverse: 140-170 rpm

(actual measurements)

Transmission Pump

48.45 l/min

12.8 gal/min US

(Engine 3400 rpm)

(Idle 1400 rpm)

AB

A

B

Top Valve

Bottom Valve

A

B

Pressure
Return
Case
Charge
Suction

Transmission Forward

Relief
Valve

125 bar
1800 psi

Lift Cylinder (Right)

Lift Cylinder (Left)

Flow Divider

Combiner

Valve

Lift Cylinder (Centre)

Sequence

Delay

Valves

Lift/Lower

Reel Drive Motors

2000 - 2100 rpm

3

2

1

Reel
Drive
Valve

T

P

M

Oil

Cooler

Filter

25 µm

Filter

25 µm

Reservoir

Cutting

Pump

26.27 l/min

6.9 gal/min US

Charge Pump

18.3 l/min

4.9 gal/min US

Charge

Relief Valve

10-15 bar

150-210 psi

Implement

Relief Valve

55 bar
800 psi

Steering
Valve

R L

T P

Steering Cylinder

2 mm

(0.08”)

Hot Oil Shuttle

4 l/min

1 gal/min US

RH

LH

TRW Me10

Soft Drop

Valve

Lift Valve

T

P

BA

P

Backlap Valve

Relief
Valve

100 bar
1400 psi

Transport: 300 rpm

Mowing: 110-140 rpm

Reverse: 140-170 rpm

(actual measurements)

Transmission Pump

48.45 l/min

12.8 gal/min US

(Engine 3400 rpm)

(Idle 1400 rpm)

AB

A

B

Top Valve

Bottom Valve

A

B

Pressure
Return
Case
Charge
Suction

Transmission Reverse

Relief
Valve

125 bar
1800 psi

Lift Cylinder (Right)

Lift Cylinder (Left)

Flow Divider

Combiner

Valve

Lift Cylinder (Centre)

Sequence

Delay

Valves

Lift/Lower

Reel Drive Motors

2000 - 2100 rpm

3

2

1

Reel
Drive
Valve

T

P

M

Oil

Cooler

Filter

25 µm

Filter

25 µm

Reservoir

Cutting

Pump

26.27 l/min

6.9 gal/min US

Charge Pump

18.3 l/min

4.9 gal/min US

Charge

Relief Valve

10-15 bar

150-210 psi

Implement

Relief Valve

55 bar
800 psi

Steering
Valve

R L

T P

Steering Cylinder

2 mm

(0.08”)

Hot Oil Shuttle

4 l/min

1 gal/min US

RH

LH

TRW Me10

Soft Drop

Valve

Lift Valve

T

P

BA

P

Backlap Valve

Relief
Valve

100 bar
1400 psi

Transport: 300 rpm

Mowing: 110-140 rpm

Reverse: 140-170 rpm

(actual measurements)

Transmission Pump

48.45 l/min

12.8 gal/min US

(Engine 3400 rpm)

(Idle 1400 rpm)

AB

A

B

Top Valve

Bottom Valve

A

B

Pressure
Return
Case
Charge
Suction

Steering to One Side

Relief
Valve

125 bar
1800 psi

Lift Cylinder (Right)

Lift Cylinder (Left)

Flow Divider

Combiner

Valve

Lift Cylinder (Centre)

Sequence

Delay

Valves

Lift/Lower

Reel Drive Motors

2000 - 2100 rpm

3

2

1

Reel
Drive
Valve

T

P

M

Oil

Cooler

Filter

25 µm

Filter

25 µm

Reservoir

Cutting

Pump

26.27 l/min

6.9 gal/min US

Charge Pump

18.3 l/min

4.9 gal/min US

Charge

Relief Valve

10-15 bar

150-210 psi

Implement

Relief Valve

55 bar
800 psi

Steering
Valve

R L

T P

Steering Cylinder

2 mm

(0.08”)

Hot Oil Shuttle

4 l/min

1 gal/min US

RH

LH

TRW Me10

Soft Drop

Valve

Lift Valve

T

P

BA

P

Backlap Valve

Relief
Valve

100 bar
1400 psi

Transport: 300 rpm

Mowing: 110-140 rpm

Reverse: 140-170 rpm

(actual measurements)

Transmission Pump

48.45 l/min

12.8 gal/min US

(Engine 3400 rpm)

(Idle 1400 rpm)

AB

A

B

Top Valve

Bottom Valve

A

B

Pressure
Return
Case
Charge
Suction

Lower Units

Relief
Valve

125 bar
1800 psi

G

NOTE:

Pressure measured at G:
At the start of the cycle the pressure measured will be 100 bar (lift
pressure), then 225 bar (combined pressure) and finally 125 bar

(1400 psi, then 3200 psi and then 1800 psi).(reel drive pressure)

Lift Cylinder (Right)

Lift Cylinder (Left)

Flow Divider

Combiner

Valve

Lift Cylinder (Centre)

Sequence

Delay

Valves

Lift/Lower

Reel Drive Motors

2000 - 2100 rpm

3

2

1

Reel
Drive
Valve

T

P

M

Oil

Cooler

Filter

25 µm

Filter

25 µm

Reservoir

Cutting

Pump

26.27 l/min

6.9 gal/min US

Charge Pump

18.3 l/min

4.9 gal/min US

Charge

Relief Valve

10-15 bar

150-210 psi

Implement

Relief Valve

55 bar
800 psi

Steering
Valve

R L

T P

Steering Cylinder

2 mm

(0.08”)

Hot Oil Shuttle

4 l/min

1 gal/min US

RH

LH

TRW Me10

Soft Drop

Valve

Lift Valve

T

P

BA

P

Backlap Valve

Relief
Valve

100 bar
1400 psi

Transport: 300 rpm

Mowing: 110-140 rpm

Reverse: 140-170 rpm

(actual measurements)

Transmission Pump

48.45 l/min

12.8 gal/min US

(Engine 3400 rpm)

(Idle 1400 rpm)

AB

A

B

Top Valve

Bottom Valve

A

B

Pressure
Return
Case
Charge
Suction

Relief
Valve

125 bar
1800 psi

Reels Engaged Forward

Lift Cylinder (Right)

Lift Cylinder (Left)

Flow Divider

Combiner

Valve

Lift Cylinder (Centre)

Sequence

Delay

Valves

Lift/Lower

Reel Drive Motors

2000 - 2100 rpm

3

2

1

Reel
Drive
Valve

T

P

M

Oil

Cooler

Filter

25 µm

Filter

25 µm

Reservoir

Cutting

Pump

26.27 l/min

6.9 gal/min US

Charge Pump

18.3 l/min

4.9 gal/min US

Charge

Relief Valve

10-15 bar

150-210 psi

Implement

Relief Valve

55 bar
800 psi

Steering
Valve

R L

T P

Steering Cylinder

2 mm

(0.08”)

Hot Oil Shuttle

4 l/min

1 gal/min US

RH

LH

TRW Me10

Soft Drop

Valve

Lift Valve

T

P

BA

P

Backlap Valve

Relief
Valve

100 bar
1400 psi

Transport: 300 rpm

Mowing: 110-140 rpm

Reverse: 140-170 rpm

(actual measurements)

Transmission Pump

48.45 l/min

12.8 gal/min US

(Engine 3400 rpm)

(Idle 1400 rpm)

AB

A

B

Top Valve

Bottom Valve

A

B

Pressure
Return
Case
Charge
Suction

Lift Units

Relief
Valve

125 bar
1800 psi

G

NOTE:

Pressure measured at G:
At the start of the cycle reels continue to turn for 2 seconds,
therefore the combined pressure of the reel valve plus the lift relief
valve pressure will read as 225 bar (3200 psi), thereafter only the lift
valve relief pressure is measured as 100 bar (1400 psi).

Lift Cylinder (Right)

Lift Cylinder (Left)

Flow Divider

Combiner

Valve

Lift Cylinder (Centre)

Sequence

Delay

Valves

Lift/Lower

Reel Drive Motors

2000 - 2100 rpm

3

2

1

Reel
Drive
Valve

T

P

M

Oil

Cooler

Filter

25 µm

Filter

25 µm

Reservoir

Cutting

Pump

26.27 l/min

6.9 gal/min US

Charge Pump

18.3 l/min

4.9 gal/min US

Charge

Relief Valve

10-15 bar

150-210 psi

Implement

Relief Valve

55 bar
800 psi

Steering
Valve

R L

T P

Steering Cylinder

2 mm

(0.08”)

Hot Oil Shuttle

4 l/min

1 gal/min US

RH

LH

TRW Me10

Soft Drop

Valve

Lift Valve

T

P

BA

P

Relief
Valve

100 bar
1400 psi

Transport: 300 rpm

Mowing: 110-140 rpm

Reverse: 140-170 rpm

(actual measurements)

Transmission Pump

48.45 l/min

12.8 gal/min US

(Engine 3400 rpm)

(Idle 1400 rpm)

AB

A

B

Top Valve

Bottom Valve

A

B

Pressure
Return
Case
Charge
Suction

Relief
Valve

125 bar
1800 psi

Backlap Valve

Reels Engaged Backlap

Lift Cylinder (Right)

Lift Cylinder (Left)

Flow Divider

Combiner

Valve

Lift Cylinder (Centre)

Sequence

Delay

Valves

Lift/Lower

Reel Drive Motors

2000 - 2100 rpm

3

2

1

Reel
Drive
Valve

T

P

M

Oil

Cooler

Filter

25 µm

Filter

25 µm

Reservoir

Cutting

Pump

26.27 l/min

6.9 gal/min US

Charge Pump

18.3 l/min

4.9 gal/min US

Charge

Relief Valve

10-15 bar

150-210 psi

Implement

Relief Valve

55 bar
800 psi

Steering
Valve

R L

T P

Steering Cylinder

Flushing Valve

.... l/min

.... gal/min US

RH

LH

TRW Me10

3WD Circuit

(Forward)

Soft Drop

Valve

Lift Valve

T

P

BA

P

Backlap Valve

Relief
Valve

100 bar
1400 psi

Transport: 300 rpm

Mowing: 110-140 rpm

Reverse: 140-170 rpm

(actual measurements)

Transmission Pump

48.45 l/min

12.8 gal/min US

(Engine 3400 rpm)

(Idle 1400 rpm)

AB

A

B

Top Valve

Bottom Valve

A

B

Relief
Valve

125 bar
1800 psi

1 mm

(0.04”)

0.5 mm
(0.02”)

3WD

Pressure
Return
Case
Charge
Suction

Lift Cylinder (Right)

Lift Cylinder (Left)

Flow Divider

Combiner

Valve

Lift Cylinder (Centre)

Sequence

Delay

Valves

Lift/Lower

Reel Drive Motors

2000 - 2100 rpm

3

2

1

Reel
Drive
Valve

T

P

M

Oil

Cooler

Filter

25 µm

Filter

25 µm

Reservoir

Cutting

Pump

26.27 l/min

6.9 gal/min US

Charge Pump

18.3 l/min

4.9 gal/min US

Charge

Relief Valve

10-15 bar

150-210 psi

Implement

Relief Valve

55 bar
800 psi

Steering
Valve

R L

T P

Steering Cylinder

Flushing Valve

.... l/min

.... gal/min US

RH

LH

TRW Me10

3WD Circuit

(Reverse)

Soft Drop

Valve

Lift Valve

T

P

BA

P

Backlap Valve

Relief
Valve

100 bar
1400 psi

Transport: 300 rpm

Mowing: 110-140 rpm

Reverse: 140-170 rpm

(actual measurements)

Transmission Pump

48.45 l/min

12.8 gal/min US

(Engine 3400 rpm)

(Idle 1400 rpm)

AB

A

B

Top Valve

Bottom Valve

A

B

Relief
Valve

125 bar
1800 psi

1 mm

(0.04”)

0.5 mm
(0.02”)

3WD

Pressure
Return
Case
Charge
Suction

10

10-1

SECTION 10

ELECTRICAL SYSTEM

US (WD) Series

10A. Repair, Service Tools and Materials............................................................. 10A-3

10C. Schematic diagrams .................................................................................. 10C-5

Engine management and mow system (USA. Specification)......................10C-5

Off Poistion .............................................................................................10C-6

Pre Heat Switch Pressed -1st 5 Seconds ...............................................10C-7

Pre Heat Switch Pressed -After 5 Seconds ............................................10C-8

Start Engine Crank..................................................................................10C-9

Engine Running .....................................................................................10C-10

Sit In seat Drive Machine To Green........................................................ 10C-11

Engage Reel Enable Switch ..................................................................10C-12

Depress LowerEngage Reel Enable Switch ..........................................10C-13

Centre units Lowers...............................................................................10C-14

Rear unit lowered Reels Engaged .........................................................10C-15

Depress Raise Pedal-F/Units S tart To Raise.........................................10C-16

Rear Units S tart To Raise-Reels S top....................................................10C-17

Rear Units Fully Raise Position..............................................................10C-18

Off Position-Initial 3 Seconds.................................................................10C-19

10A

ELECTRICAL SYSTEM

SECTION 10A. REP AIR, SER VICE T OOLS AND MATERIALS

10A-3

Tools required: Digital Multimeter

Jumper wires
60 amp Ammeter
Battery Tester

Cleaning Materials: Baking soda and water

Water repellent (WD40)

Other service items: Electrical insulation compound

10C

ELECTRICAL SYSTEM

SECTION 10C.USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-5

G

r

e

e

n

s

p

l

e

x

I

I

-

E

l

e

c

t

r

i

c

c

i

r

c

u

i

t

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

S

h

u

t

d

o

w

n

t

i

m

e

r

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

2

0

a

m

p

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p

O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

ELECTRICAL SYSTEM

SECTION 10C. USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-6

O

f

f

p

o

s

i

t

i

o

n

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

S

h

u

t

d

o

w

n

t

i

m

e

r

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

2

0

a

m

p

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p

O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

10C

ELECTRICAL SYSTEM

SECTION 10C.USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-7

P

r

e

h

e

a

t

s

w

i

t

c

h

p

r

e

s

s

e

d

-

1

s

t

5

s

e

c

o

n

d

s

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

S

h

u

t

d

o

w

n

t

i

m

e

r

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

2

0

a

m

p

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p

O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

ELECTRICAL SYSTEM

SECTION 10C. USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-8

P

r

e

h

e

a

t

s

w

i

t

c

h

p

r

e

s

s

e

d

-

a

f

t

e

r

5

s

e

c

o

n

d

s

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

S

h

u

t

d

o

w

n

t

i

m

e

r

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

2

0

a

m

p

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p
O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

10C

ELECTRICAL SYSTEM

SECTION 10C.USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-9

S

t

a

r

t

e

n

g

i

n

e

(

C

r

a

n

k

)

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

S

h

u

t

d

o

w

n

t

i

m

e

r

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

2

0

a

m

p

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p

O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

ELECTRICAL SYSTEM

SECTION 10C. USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-10

E

n

g

i

n

e

r

u

n

n

i

n

g

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p

O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

2

0

a

m

p

S

h

u

t

d

o

w

n

t

i

m

e

r

10C

ELECTRICAL SYSTEM

SECTION 10C.USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-11

S

i

t

i

n

s

e

a

t

-

d

r

i

v

e

m

a

c

h

i

n

e

t

o

g

r

e

e

n

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

l

i

m

i

t

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

l

i

m

i

t

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p

O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

2

0

a

m

p

S

h

u

t

d

o

w

n

t

i

m

e

r

ELECTRICAL SYSTEM

SECTION 10C. USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-12

E

n

g

a

g

e

r

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

G

lo

w

P

lu

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

it

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

le

n

o

id

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

it

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

it

c

h

B

a

c

k

la

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

is

e

s

w

it

c

h

R

R

e

a

r

U

p

lim

it

R

e

a

r

d

o

w

n

lim

it

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

lt

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

is

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

la

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

la

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

le

s

w

it

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

im

e

r

P

r

e

h

e

a

t

r

e

la

y

H

e

a

d

lig

h

t

s

w

it

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

le

O

il

le

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

la

m

p

H

e

a

d

lig

h

t

s

T

P

S

o

il

t

e

m

p

s

e

n

d

e

r

T

P

S

o

il

le

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

il

p

r

e

s

s

u

r

e

la

m

p

O

il

p

r

e

s

s

u

r

e

s

w

it

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

la

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

le

n

o

id

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

2

0

a

m

p

S

h

u

t

d

o

w

n

t

im

e

r

10C

ELECTRICAL SYSTEM

SECTION 10C.USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-13

D

e

p

r

e

s

s

l

o

w

e

r

p

e

d

a

l

(

l

o

w

e

r

s

w

i

t

c

h

)

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p

O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

2

0

a

m

p

S

h

u

t

d

o

w

n

t

i

m

e

r

ELECTRICAL SYSTEM

SECTION 10C. USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-14

C

e

n

t

r

e

u

n

i

t

l

o

w

e

r

s

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

l

i

m

i

t

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

l

i

m

i

t

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p

O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

2

0

a

m

p

S

h

u

t

d

o

w

n

t

i

m

e

r

10C

ELECTRICAL SYSTEM

SECTION 10C.USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-15

R

e

a

r

u

n

i

t

l

o

w

e

r

e

d

,

r

e

e

l

s

e

n

g

a

g

e

d

G

lo

w

P

lu

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

it

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

le

n

o

id

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

it

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

it

c

h

B

a

c

k

la

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

is

e

s

w

it

c

h

R

R

e

a

r

U

p

lim

it

R

e

a

r

d

o

w

n

lim

it

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

lt

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

is

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

la

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

la

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

le

s

w

it

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

im

e

r

P

r

e

h

e

a

t

r

e

la

y

H

e

a

d

lig

h

t

s

w

it

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

le

O

il

le

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

la

m

p

H

e

a

d

lig

h

t

s

T

P

S

o

il

t

e

m

p

s

e

n

d

e

r

T

P

S

o

il

le

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

il

p

r

e

s

s

u

r

e

la

m

p

O

il

p

r

e

s

s

u

r

e

s

w

it

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

la

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

le

n

o

id

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

2

0

a

m

p

S

h

u

t

d

o

w

n

t

im

e

r

ELECTRICAL SYSTEM

SECTION 10C. USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-16

D

e

p

r

e

s

s

r

a

i

s

e

p

e

d

a

l

-

f

r

o

n

t

u

n

i

t

s

s

t

a

r

t

t

o

r

a

i

s

e

G

lo

w

P

lu

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

it

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

le

n

o

id

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

it

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

it

c

h

B

a

c

k

la

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

is

e

s

w

it

c

h

R

R

e

a

r

U

p

lim

it

R

e

a

r

d

o

w

n

lim

it

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

lt

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

is

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

la

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

la

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

le

s

w

it

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

im

e

r

P

r

e

h

e

a

t

r

e

la

y

H

e

a

d

lig

h

t

s

w

it

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

le

O

il

le

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

la

m

p

H

e

a

d

lig

h

t

s

T

P

S

o

il

t

e

m

p

s

e

n

d

e

r

T

P

S

o

il

le

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

il

p

r

e

s

s

u

r

e

la

m

p

O

il

p

r

e

s

s

u

r

e

s

w

it

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

la

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

le

n

o

id

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

2

0

a

m

p

S

h

u

t

d

o

w

n

t

im

e

r

10C

ELECTRICAL SYSTEM

SECTION 10C.USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-17

R

e

a

r

u

n

i

t

s

t

a

r

t

s

t

o

r

a

i

s

e

-

r

e

e

l

s

s

t

o

p

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p

O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

2

0

a

m

p

S

h

u

t

d

o

w

n

t

i

m

e

r

ELECTRICAL SYSTEM

SECTION 10C. USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-18

R

e

a

r

u

n

i

t

f

u

l

l

y

r

a

i

s

e

d

p

o

s

i

t

i

o

n

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

l

i

m

i

t

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

l

i

m

i

t

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p

O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

2

0

a

m

p

S

h

u

t

d

o

w

n

t

i

m

e

r

10C

ELECTRICAL SYSTEM

SECTION 10C.USA. ELECTRIC SCHEMATIC DIAGRAMS

10C-19

O

f

f

p

o

s

i

t

i

o

n

-

I

n

i

t

i

a

l

3

s

e

c

o

n

d

s

G

l

o

w

P

l

u

g

s

B

a

t

t

e

r

y

B

a

t

A

C

S

t

I

g

n

O

f

f

S

t

a

r

t

O

n

A

c

c

K

e

y

S

w

i

t

c

h

3

W

D

B

O

B

W

/

B

L

W

W

/

R

2

0

a

m

p

B

L

W

/

R

R

B

B

L

S

h

u

t

d

o

w

n

t

i

m

e

r

W

/

G

B

L

B

W

/

Y

P

r

e

h

e

a

t

s

w

i

t

c

h

W

/

Y

G

D

4

W

/

Y

W

/

G

W

/

G

B

L

F

u

e

l

s

o

l

e

n

o

i

d

2

0

a

m

p

Y

R

W

/

Y

R

W

/

R

S

e

a

t

U

p

lim

it

N

e

u

t

r

a

l

s

w

i

t

c

h

W

G

W

/

R

W

/

B

R

D

2

R

Y

W

/

B

L

S

e

q

u

e

n

c

e

s

w

i

t

c

h

B

a

c

k

l

a

p

D

o

w

n

lim

it

O

W

/

O

W

/

B

R

M

o

w

p

e

d

a

l

r

a

i

s

e

s

w

i

t

c

h

R

R

e

a

r

U

p

l

i

m

i

t

R

e

a

r

d

o

w

n

l

i

m

i

t

G

W

/

R

G

R

Y

Y

W

/

R

W

/

R

B

O

B

B

B

R

A

l

t

e

r

n

a

t

o

r

A

m

m

e

t

e

r

L

o

w

e

r

s

o

l

R

a

i

s

e

s

o

l

O

G

G

G

D

7

D

5

D

6

S

e

q

u

e

n

c

e

s

o

l

W

/

B

L

S

e

q

u

e

n

c

e

r

e

l

a

y

Y

B

W

/

G

D

3

Y

Y

R

e

e

l

s

o

l

B

F

u

e

l

p

u

m

p

W

/

Y

S

t

a

r

t

e

r

r

e

l

a

y

W

W

/

B

R

W

/

G

B

R

e

e

l

e

n

a

b

l

e

s

w

i

t

c

h

2

0

a

m

p

B

B

B

B

B

B

B

W

/

R

W

W

/

Y

W

/

Y

W

/

Y

W

/

B

L

G

P

r

e

h

e

a

t

T

i

m

e

r

P

r

e

h

e

a

t

r

e

l

a

y

H

e

a

d

l

i

g

h

t

s

w

i

t

c

h

B

L

B

L

B

L

W

/

B

L

T

P

S

M

o

d

u

l

e

O

i

l

l

e

a

k

b

u

z

z

e

r

A

m

m

e

t

e

r

l

a

m

p

H

e

a

d

l

i

g

h

t

s

T

P

S

o

i

l

t

e

m

p

s

e

n

d

e

r

T

P

S

o

i

l

l

e

v

e

l

s

e

n

d

e

r

H

o

u

r

m

e

t

e

r

O

i

l

p

r

e

s

s

u

r

e

l

a

m

p

O

i

l

p

r

e

s

s

u

r

e

s

w

i

t

c

h

W

a

t

e

r

t

e

m

p

g

a

u

g

e

W

a

t

e

r

t

e

m

p

s

e

n

d

e

r

W

a

t

e

r

t

e

m

p

l

a

m

p

O

v

e

r

h

e

a

t

b

u

z

z

e

r

S

t

a

r

t

e

r

m

o

t

o

r

S

o

l

e

n

o

i

d

E

a

r

t

h

E

a

r

t

h

W

/

B

W

/

R

W

/

R

W

/

R

Y

W

/

G

B

B

B

B

B

W

/

O

W

/

B

L

W

/

B

W

/

O

W

/

O

W

/

B

R

R

B

3

0

a

m

p

SECTION 10

ELECTRICAL SYSTEM

WD Series with Paddle Control

Schematic diagrams ...........................................................................................

Off Poistion .......................................................................................................

Pre Heat Switch ................................................................................................

Start Engine Crank ............................................................................................

Engine Running .................................................................................................

Engine Running, PTO on, Reels lowering ...........................................................

Engine running, PTO on, rear unit lowering.........................................................

Engine running, all units lowered ........................................................................

Engine running,PTO on, raise ............................................................................

Engine running, PTO on, rear unit raising ..........................................................

Engine running, PTO on, all unitsraised. .............................................................