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CAUTION

  Do not back up the motorhome with the towed ve-
hicle attached. 
  Backing up with the towed vehicle attached will 
cause the towed vehicle to “jackknife,” which will dam-
age the tow bar, the baseplate, the receiver hitch, the 
towed vehicle’s front end and/or the rear of the mo-
torhome. Backing up with the towed vehicle attached 
is the primary cause of tow bar damage and will void 
the warranty.

  •  Be sure the vehicle can be towed

 before taking it on 

the road. Some vehicles must be equipped with a transmis-
sion lube pump, an axle disconnect, driveline disconnect 
or free-wheeling hubs before they can be towed. Failure 
to properly equip the vehicle will cause severe damage 
to the transmission. 
    Check the vehicle manufacturer’s instructions for the 
proper procedure(s) to prepare the vehicle for towing.

  •  The tow bar must be within the ‘Safe Zone’

 — no 

more than three inches above or below level. Towing with 
an out-of-level tow bar will cause significant wear and tear 
and may result in non-warranty failure and damages. (See 
the section titled “Stay within the ‘Safe Zone’” for further 
information.)

  •  The steering wheel must be unlocked and free to 
turn when towing. 

Failure to do so can cause severe 

tire and equipment damage. Check the manufacturer’s 
instructions for the proper towing procedure(s).
 

•  The towed vehicle and all its contents cannot exceed 

8,000 pounds. 

The Sterling tow bar is rated at a maximum 

of 8,000 pounds carrying capacity; therefore the towed 
vehicle and all its contents cannot exceed 8,000 pounds. 
In addition, the receiver hitch, the safety cables and all 
supplementary towing equipmentmust be rated at no less 
than the weight of the towed vehicle and all its contents. 

SAFE TOWING PRACTICES

  •  Show the owner how to properly operate the tow 
bar. 

Familiarize yourself with the features of the tow bar. 

Demonstrate them to the owner and ask the owner to con-
nect and disconnect the tow bar and other components 
of the towing system, until the owner is comfortable with 
its operation. 
 

•  Advise the owner to always use safety cables when 

towing

. The safety cables must connect the towed vehicle 

to the towing vehicle, frame to frame.
  

The capacity of the safety cables must meet or 

exceed the towed weight, or the safety cables will fail.
  •  The tow bar must be attached to a baseplate which 
is bolted to the towed vehicle’s frame or unibody.

 

  •  Read the instructions thoroughly before installing 
the tow bar and its components. 

If  the  tow bar is not 

properly aligned, centered and positioned on the towed 
vehicle, then excessive tire wear and other consequential, 
non-warranty damage may result.

INSTALLER'S SAFETY CHECKLIST

 

 •  The installer must NOT use the tow bar as a ground 

for welding. 

Connecting a ground to the tow bar will cause 

current to flow through the locking spring, which will de-
temper the spring and destroy the locking mechanism. 

  •  Under no circumstances should the tow bar be 
welded to the vehicle

, nor should any of the pre-punched 

mounting holes be altered. Any welding or altering of the 
tow bar will void the owner’s warranty. 

  Failure to follow these instructions may cause prop-
erty damage, personal injury or even death.

  •  The tow bar must be secured with linch pins (or 
optional padlocks) before towing. 

Unless the tow bar 

is secured to both vehicles with all appropriate pins (or 
padlocks), the towed vehicle will detach.
 

•  Inspect the system before towing

 — check the mounts, 

brackets, fasteners, bolts, wiring, the safety cables and all 
other components each time before towing. Additionally, 
check the baseplate every 3,000 miles — inspect for any 
fractures or cracks in the steel or any visible damage. Do 
not tow if the baseplate is damaged.
    Additionally, check the torque on all bolts. (To find 
the torque ratings, refer to the installation instructions for 
the baseplate and the tow bar.)
 

•  This tow bar is designed for use on paved roads 

only. 

ROADMASTER does not recommend off-road tow-

ing, nor does ROADMASTER warrant the tow bar for off-
road use.

  •  Never tow a vehicle with one of a comparable 
weight. 

The towed vehicle’s weight should never exceed 

40 percent of the towing vehicle’s weight.
    Towing a vehicle with one of similar weight will cause 
the towed vehicle to override the towing vehicle, result-
ing in “jackknifing,” “leapfrogging” or “fishtailing.” Serious 
damage to both vehicles, as well as the towing system, 
could result.
 

•  Always stand to one side and as close to the mo-

torhome as possible when releasing the tow bar lock-
ing mechanisms.

 Never stand between the adjustable 

arms, or put any part of your body between the adjustable 
arms when releasing the tow bar — always stand to one 
side. 
    Because the towed vehicle may jerk forward when the 
locking mechanisms are released, face the towed vehicle 
and stand as close to the back of the motorhome as pos-
sible before releasing the locking mechanisms, to keep 
from being hit by the towed vehicle. 

continued on next page

Summary of Contents for Sterling ALL-TERRAIN 576

Page 1: ...1 2007 2021 ROADMASTER Inc All rights reserved 853326 31 09 21 ...

Page 2: ...MASTER FAMILY Safety definitions inside front cover Safe towing practices 1 2 Connecting and disconnecting Connecting the tow bar 3 4 Disconnecting the tow bar 5 Wiring instructions 6 Safety cables How to use safety cables 7 Proper installation of safety cables 8 Stay within the Safe Zone 9 Care and cleaning 9 Tow bar components back cover Your tow bar serial number is located on a label on the in...

Page 3: ...r unibody Read the instructions thoroughly before installing the tow bar and its components If the tow bar is not properly aligned centered and positioned on the towed vehicle then excessive tire wear and other consequential non warranty damage may result INSTALLER S SAFETY CHECKLIST The installer must NOT use the tow bar as a ground for welding Connecting a ground to the tow bar will cause curren...

Page 4: ...oblem If you do note how far you can safely turn the motorhome s steering wheel and be sure not to turn it further when towing Damage that results from turn ing too sharply is not covered by warranty Never use the tow bar to tow more than one ve hicle In some states it is legal to have one vehicle towing more than just one vehicle for example a truck which is towing a trailer which is towing a boa...

Page 5: ... locked The ring Figure 1 is spring loaded it must be snapped over the pin as shown in Figure 1 with the curved side of the linch pin touching the ring in order to keep the base pin secure Both tow bar arms must be attached to the base plate and locked with a linch pin Towing vibrations will force the linch pins out unless they are properly locked in place over the base pins on both baseplates Fai...

Page 6: ...ry or even death Do not tow a vehicle using a tow bar baseplate safety cables or a hitch receiver rated less than the actual weight of the towed vehicle or failure may oc cur during towing causing property damage personal injury or even death Do not tow if the tow bar is more than three inches out of level See Stay in the Safe Zone on page 9 Towing out of level creates excessive strain on the tow ...

Page 7: ...w bar on the motorhome by reversing the connection procedure under Connecting the tow bar Note if you must park on an uphill incline you may find that you cannot remove the base pins even with the tow bar arms released The weight of the towed vehicle trying to roll back Figure 6 is binding the pins in place Allow the towed vehicle to idle forward just enough to take the tension of this weight off ...

Page 8: ... which may result in a traffic accident causing property damage personal injury or even death Wiring the plug for a six wire system 1 Insert the end of the electrical cord through one of the cable guides 2 Strip to 3 8 of insulation from the ends Connect the wires according to Figure 7 apply a silicone sealant to the attachment points to help prevent damage from moisture and corrosion Wiring the s...

Page 9: ...fety device required by law in many states This section and the following section will acquaint you with how to use them properly The safety cables must connect the towing vehicle to the towed vehicle frame to frame The safety cables must be rated at 8 000 pounds weight capacity per pair or higher This is the maximum weight capacity of the tow bar the towed vehicle and all its contents cannot exce...

Page 10: ...ct as shown in Figure 10 using short safety cables sold separately The safety cables must be carefully routed so that they cannot become pinched frayed scraped or oth erwise damaged and so they will not drag when going over dips or low spots Do not use the cables if they show any signs of wear or damage immediately discontinue towing and replace the cables Failure to follow these instructions will...

Page 11: ... undue strain on the entire towing system For that reason do not tow if the tow bar is not within the Safe Zone no more than three inches above or below level Towing a vehicle with a tow bar that is not within the Safe Zone will result in significant wear and tear on the tow bar and baseplate significant wear and tear on the vehicle s suspension and frame and the eventual failure of the towing sys...

Page 12: ...0520 6a hitch pin clip two 910028 6b hitch pin and clip one each 910027 7 yoke assembly with bushing color coded red part numbers 7a through 9e sold separately 910575 7a Qty1 x 4 bolt 350190 20 7b Qty 1 jam nut 350264 10 7c Qty 1 lock nut 350267 01 7d Qty 1 x 4 bolt 350185 10 7e Qty 13 acetal washer 350358 00 7f Qty 3 flat washer 350314 60 7g Qty 1 yellow zinc washer 350314 40 not all washers show...

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