Demco TI110SB, TI110 User Manual
DOING OUR BEST TO PROVIDE YOU THE BEST
TO W -IT
TI110 & TI110SB TOW DOLLY
OPERATORS MANUAL
08/03
RD20006, Rev 3
ASSEMBLY
CALIBRATION
OPERATION
REPLACEMENT PARTS
READ complete manual CAREFULLY
BEFORE attempting operation.
DEMCO Dethmers Mfg. Co. 4010 320th St. P.O. Box 189 Boyden, IA 51234
PH: (712) 725-2311 Toll Free: 1-800-543-3626 FAX: 1-800-845-6420
www.demco-products.com
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IMPORTANT
We have discovered 1992 and newer model cars that are too wide in the body area to properly fit on a TI110 - 8' wide tow dolly
even though the front tire measurement is less than 70".
The 1992 and newer Oldsmobile 88 and 98 are in this category, there may be others. In addition to the standard measurement,
always follow weight limitations when using a Demco TOW-IT Tow Dolly.
TI100 - Standard Unit
3350 lbs. - Total Towed Vehicle Weight
WARNING: Exceeding weight limitations or not using a towing vehicle larger and at least 1,000 lbs. heavier
than the tow dolly and the towed vehicle combined can result in loss of towing vehicle control, separation of the tow
dolly from the towing vehicle, or separation of the towed vehicle from the tow dolly, causing severe personal injury,
death, or property damage.
CAUTION: All vehicles to be towed on Demco Tow Dollies must be towed with the front axle on the dolly.
TI110SB - Brake Unit
3500 lbs. - Total Towed Vehicle Weight
Table of Contents
General information............................................................................................................... 2
Safety Sign Locations ..........................................................................................................3
Bolt T orque ............................................................................................................................4
Safety and Maintenance .......................................................................................................4
T esting Lights........................................................................................................................5
Loading Instructions ........................................................................................................... 6-8
Limited Warranty ................................................................................................................... 9
Tow Dolly Parts List and Breakdown..................................................................................10-11
Assembly Instructions .......................................................................................................12-13
Surge Brake Assembly........................................................................................................ 14
Model DA66 Actuator Parts (replacemant only) ................................................................... 14
Model DA603 Actuator Parts ............................................................................................... 15
Model DA91 Actuator Parts (replacement only) ................................................................... 16
10î Brake Cluster Parts List and Breakdown .......................................................................17
Optional Winch..................................................................................................................... 18
Optional T ool Box ................................................................................................................. 18
Optional Spare Tire and Mount ............................................................................................ 18
Optional Wheel Jack ............................................................................................................ 19
Optional Deflector ................................................................................................................ 19
Optional Light Bar ................................................................................................................ 19
Tow Dolly Parts List and Breakdown..................................................................................16-17
Assembly Instructions .......................................................................................................18-19
"Reporting Safety Defects"
If you believe that your vehicle has a defect
which could cause a crash or could cause injury or
death, you should immediately inform the National
Highway Traffic Safety Administration (NHTSA) in
addition to notifying Dethmers Manufacturing Company (DEMCO).
If NHTSA receives similar complaints, it may
open an investigation, and if it finds that a safety
defect exists in a group of vehicles, it may order a
recall and remedy campaign. However, NHTSA
cannot become involved in individual problems between you, your dealer, or Dethmers Manufacturing
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Company (DEMCO).
To contact NHTSA, you may either call the
Auto Safety Hotline toll-free at
1-800-424-9393 (or 366-0129 in
Washington, D.C. area) or write to:
NHTSA,
U.S. Department of Transportation
Washington, D.C. 20590.
You can also obtain other information about
motor vehicle safety from the Hotline.
SAFETY SIGN LOCATIONS
Types of safety sign and locations on Tow It are shown in illustration below. Good safety
requires that you familiarize yourself with various safety signs, type of warning, and particular
function related to that area, that requires your SAFETY AWARENESS.
3
4
SAFETY DECAL PARTS LIST
REF.
NO. PART NO. DESCRIPTION
1. 04508 Amber Reflector
2. 04804 Red Reflector
3. RD21007 Instructions
4. DD21016 Winch Operation
5. DA21001 Tire Pressure
2
5
1
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BOLT TORQUE
TORQUE DATA FOR STANDARD NUTS, BOLTS, AND CAP SCREWS.
Tighten all bolts to torques specified in chart unless otherwise noted. Check tightness of bolts
periodically, using bolt chart as guide. Replace hardware with same grade bolt.
NOTE: Unless otherwise specified, high-strength Grade 5 hex bolts are used throughout
assembly of equipment.
Bolt T orque for Standard bolts *
Torque Specifications
Torque figures indicated are valid for
non-greased or non-oiled threads and
heads unless otherwise specified.
Therefore, do not grease or oil bolts or
cap screws unless otherwise specified
in this manual. When using locking
elements, increase torque values
by 5%.
* GRADE or CLASS value for bolts
and capscrews are identified by their
head markings.
GRADE 2 GRADE 5 GRADE 8
A lb-ft (N.m) lb-ft (N.m) lb-ft (N.m)
1/4 6 (8) 9 (12) 12 (16)
5/16 10 (13) 18 (25) 25 (35)
3/8 20 (27) 30 (40) 45 (60)
7/16 30 (40) 50 (70) 80 (110)
1/2 45 (60) 75 (100) 115 (155)
9/16 70 (95) 115 (155) 165 (220)
5/8 95 (130) 150 (200) 225 (300)
3/4 165 (225) 290 (390) 400 (540)
7/8 170 (230) 420 (570) 650 (880)
1 225 (300) 630 (850) 970 (1310)
Bolt T orque for Metric bolts *
CLASS 8.8 CLASS 9.8 CLASS 10.9
A lb-ft (N.m) lb-ft (N.m) lb-ft (N.m)
6 9 (13) 10 (14) 13 (17)
7 15 (21) 18 (24) 21 (29)
8 23 (31) 25 (34) 31 (42)
10 45 (61) 50 (68) 61 (83)
12 78 (106) 88 (118) 1 06 (144)
14 125 (169) 140 (189) 170 (230)
16 194 (263) 216 (293) 263 (357)
18 268 (363) -- -- 364 (493)
20 378 (513) -- -- 515 (689)
22 516 (699) -- -- 702 (952)
24 654 (886) -- -- 890 (1206)
GRADE-2 GRADE-5 GRADE-8
CLASS 8.8 CLASS 9.8 CLASS 10.9
8.8
9.8
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10.9
WARNING:
VEHICLE CONTROL, SEPARATION OF THE TOW DOLLY FROM THE TOWING VEHICLE, SEPERATION OF THE
TOWED VEHICLE FROM THE TOW DOLLY, CAUSING SEVERE PERSONAL INJURY, DEATH, OR PROPERTY
DAMAGE.
SAFETY
FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN LOSS OF TOWING
MAINTENANCE
Safety is of utmost importance at all times. There are
several items that must be checked each time
using and
Make sure all bolts are properly tightened and those
requiring a set torque are up to specifications:
Lug Nuts - 75 to 80 ft./lbs.
Check Lug Nut tension after the first 5 miles and
periodically thereafter.
The ball hitch must latch securely around the ball and
the safety lock pin or lever must be in position to lock the
hitch on the ball.
RECOMMENDED BALL HEIGHT: 18 inches to the top
of the ball on the towing vehicle.
Hook the towed vehicle safety chains to the frame of the
vehicle directly above the area where the chain is
mounted on the Tow-It. Leave some slack in the chain
to allow suspension movement.
Check to make sure that all lights are in proper working
order.
Examine the winches and straps, making sure they are
in good conditon.
Be certain the safety lock pins are locking the strap
winches.
Retighten straps over the tires after the first 5 miles and
every 50 miles thereafter. Ensure that they are tight.
The TI110 tires must be inflated to the recommended 35
PSI.
The TI110SB tires must be inflated to the recommended
50 PSI.
The strap on the optional tongue winch must be in good
condition and should be stored neatly on winch when
not in use.
NOTE: The winch strap must not be left connected to
the towed vehicle after it is loaded and strapped down.
Make sure the optional light bar is fastened
the rear of the towed vehicle.
The wires to the optional light bar should be run along the
car and fastened so as not to damage the finish of the
towed vehicle.
NOTE: This unit cannot be backed up when loaded.
All vehicles mounted on the Tow-It must be mounted
with the front of the vehicle facing forward.
Rear Wheel Drive: Disconnect the towed vehicle
driveshaft for rear wheel drive vehicles with automatic
transmission.
For manual transmission: Consult your vehicle owners
manual for towing suitability with the drive shaft connected.
while using the Tow-It.
before
securely at
Periodically check all bolts and nuts to ensure proper
tension or torque.
An occasional drop of oil may be required on the moving
parts of the tie down winches.
Grease the center pivot pin grease zerk every 1500
miles.
Grease the main frame platform skids every 1500 miles.
These grease zerks are readily accessible from under
the front tire stop main platform.
Grease the Sure Lube
TM
Hubs every 3,000 miles.
Use High Quality Bearing
Grease with Hand Operated
Grease Gun.
IMPORTANT LOADING INSTRUCTION
Check your wheel tie-down straps.
Your Tow-It is equipped with custom made wheel
tie-down straps of a standard size that will fit most
tires, however if your tires are too large or too small
you will want to exchange these new straps for the
proper size straps.
1. Tire too large - This is very obvious. The strap
will not basket over the tire properly; call us,
we will provide at NO Charge on an exchange
basis, the proper size strap. You must return
your new unused straps and provide us with
the Make and Model of your car and the tire
size.
2. Tire too small - This is not as obvious. The
basket will fit down over the tire very well; the
problems cannot be readily seen. You must
tighten the straps down solid and then check
on the inside of the tire and be sure the strap,
when tightened, does not come in contact with
any metal that may cause wear or cutting such
as strut mounts. If there is contact, you need a
smaller strap, call us, we will provide on a NO
Charge, exchange basis, the proper size strap.
You must return your new unused straps and
provide us with the Make and Model of your
car and tire size.
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Thank you for Purchasing
Products.
TESTING LIGHTS BEFORE USE
1. Check that the WHITE (ground) wire of the wiring harness
is connected to the Tow-It frame and the WHITE (ground)
wire is connected to the frame of the towing vehicle.
2. With headlights in "ON" position, the tail lights, the light
cluster bar, the license plate light, and the clearance lights
should be lighted.
3. Start engine and have someone depress brake pedal.
Brake lights of tow dolly and towing vehicle should come
"on" and "off" simultaneously with each application.
4. Turn left turn signal on. Left turn light of Tow-It and towing
vehicle should flash simultaneously. Should the turn
signal lights of the trailer function opposite to those of the
towing vehicle, it is probable that the YELLOW and GREEN
wires have been reversed. Check the plug connection
under the tongue of the Tow-It to make sure wire colors are
not crossed at that point. If plug connection is incorrect,
correct problem by reversing yellow and green wire connection on the towing vehicle.
LOADING INSTRUCTIONS
Refer to load limits on inside of front cover.
Step 3. To allow the wheel platform to tilt back for loading:
1) Swing the bottom of the locking latch (C) toward the hitch
far enough to allow locking pin handle to be lifted.
Step 1. Secure ball coupler to 2" (3,500 lb. capacity) towing
vehicle ball only. Make sure that the hitch and the hitch ball
are in good condition and not rusted, loose or stripped.
Recommended ball height is 18" to the top of the ball.
Make sure hitch is locked down and secured with safety clip.
Criss-cross safety chains under tongue and secure to towing
vehicle frame.
Step 2. Ensure that towed vehicle parking brake is fully
engaged, then release the tie-down straps. NOTE: Tie down
straps must be "quick -released" by grasping ratchet pawl and
ratchet handle simultaneously and pushing down sharply. This
process will permit easy removal of strap from winch.Remove
tie-down strap hook from its storage position at the rear of the
ramp. Lay the straps on the ground in front of the winches.
2) Pull locking pin toward the hitch as far as it will go. The wheel
platform will tilt back to allow loading.
Step 4. Before loading (and unloading) towed vehicle make
sure platform and towed vehicle are in straight alignment. Tow
dolly must be completely and properly hooked up to the towing
vehicle. Towing vehicle must be larger and at least 1000
lbs. heavier than the tow dolly and towed vehicle combined.
IMPORTANT: Tire tread width or body width of towed
vehicle must not exceed:
TI110 - 70" max. (outside to outside),
TI110SB 42" min. (inside to inside),
70" max. (body width)
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