Roadmaster Sterling Operating instructions

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for an additional year —
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® 2007-2018 ROADMASTER, Inc. All rights reserved. 853326-24 01-18

IMPORTANT NOTICE!
Safety Definitions
This manual contains information that is very important to know and understand. This information is provided for
safety and to prevent equipment problems. To help recognize this information, observe the following symbols:
WARNING indicates a potentially hazardous situ-
ation which, if not avoided, could result in property
damage, serious personal injury or even death.
CAUTION indicates a potentially hazardous situation
which, if not avoided, may result in property damage,
or minor or moderate personal injury.
CAUTION
CAUTION used without the safety alert symbol in-
dicates a potentially hazardous situation which, if not
avoided, may result in property damage.
NOTE
Refers to important information and is placed in italic
type. It is recommended that you take special notice of
these items.
This manual has been prepared to acquaint you with the installation, operation, care and maintenance of your tow bar and
to provide you with important safety information.
Read your owner’s manual cover to cover. Understand how to install and operate your tow bar, and carefully follow
the instructions and safety precautions.
Your tow bar has a one-year limited warranty. To qualify for your warranty, register online at www.roadmasterinc.com/
wreg, or fill out and return the enclosed product registration card. As a bonus, we'll extend your warranty to a total
of two years at no additional cost, if we receive your registration (either online or mailed) within 30 days of pur-
chase.
We thank you for your patronage and greatly appreciate your discerning taste.
WELCOME TO THE ROADMASTER FAMILY!
Safety definitions .................................. inside front cover
Safe towing practices ..................................................1-2
Installing the ‘quick-disconnect’ system.......................3-4
Connecting and disconnecting
Connecting the tow bar ...........................................4-5
Disconnecting the tow bar..........................................6
Wiring instructions ..........................................................7
Safety cables
How to use safety cables...........................................8
Proper installation of safety cables ............................9
Stay within the ‘Safe Zone’...........................................10
Care and cleaning ...................................................10-11
Limited warranty ........................................................... 11
Tow bar components ...................................... back cover
Your tow bar serial number…
…is located on a label on the inside of the driver’s side
tow bar arm. You will need this number when you fill out
your product registration card.
Write down the serial number in the space below and
retain for future reference.
Serial number:
Table of Contents
Read all instructions before installing
the tow bar or before towing a vehicle.
Failure to understand how to properly in-
stall or operate the tow bar could result
in property damage, personal injury or
even death.
Save this manual
Save this manual for future reference. It contains impor-
tant sections relative to safety, use, maintenance, parts
replacement and other information. Therefore, make sure
this manual is always with you when you’re towing. You
may download or print a copy of the most current manual
at www.roadmasterinc.com (under ‘Support').
All illustrations and specifications contained herein are based on the latest
information available at the time of publication. ROADMASTER, Inc. reserves
the right to make changes, at any time, without notice, in material, specifica-
tions and models, or to discontinue models.

1
• 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
on the tow bar and baseplate, and on the towed vehicle’s
suspension and frame. (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 ex-
ceed 8,000 pounds. The Sterling All Terrain 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 equipment must be rated at no
less than the weight of the towed vehicle and all its con-
tents.
• 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 tow bar 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 dam-
aged.
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
SAFE TOWING PRACTICES
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.
• Do not drill a second hole in the shank of any tow
bar or hitch accessory. If the hole in the shank does
not align to the
hole in the hitch
receiver: 1) pur-
chase a hitch
accessory of
the appropriate
length; or 2) call
ROADMASTER
technical sup-
port.
Drilling a
second hole will
weaken the steel. The shank may break during towing,
which will cause the towed vehicle to separate.
• Always stand to one side and as close to the motor-
home as possible when releasing the tow bar locking
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.
• Always use safety cables when towing. The safety
cables, which are provided with the Sterling All Terrain,
must connect the towed vehicle to the towing vehicle frame
to frame.
If the safety cables are ever replaced, use only 8,000
pound or heavier rated safety cables.
Additionally, check to ensure that the safety cables are
the proper length. Refer to the sections titled “How to use
safety cables” and “Proper installation of safety cables”
for further information.
• Check the motorhome turning radius. Some motor-
home chassis have such a tight turning radius that you
can damage your motorhome, towed vehicle or tow bar
while turning too sharply. Before getting on the road with
your towed vehicle, you should test your turning radius in
an empty parking lot.
With the towed vehicle attached, have someone watch
as you slowly turn sharply to see whether you have this
potential problem. 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
continued on next page

2
Safe towing practices
continued from preceding page
more than just one vehicle (for example, a truck which is
towing a trailer which is towing a boat). However, when
using a tow bar never tow more than one vehicle, or non-
warranty damage or injury may result.
• The tow bar stinger fits motorhome hitch receivers
with two-inch inner diameters. If the motorhome hitch
receiver is a larger size, attach a two-inch adaptor sleeve
(not supplied) to the hitch receiver.
Damage to the tow bar stinger or other components of
the tow bar, abnormal wear patterns on the towed vehicle’s
tires, as well as other, consequential damage may result
if an adaptor sleeve is not used.
• Keep the tow bar clean and well-lubricated. As is
the case with most precision equipment, frequent clean-
ing and care results in better performance and longevity.
Refer to the section titled “Care and cleaning” for further
information.
Failure to follow these instructions may cause prop-
erty damage, personal injury or even death.

3
Quick-disconnect parts list:
(2) quick-disconnects
(parts “A” and “B”)
(2) safety plates (“C”)
(2) safety cable anchors
(parts “D” and “E”)
All mounting hardware
Figure 1
Figure 2
INSTALLING THE ‘QUICK-DISCONNECT' SYSTEM
This ROADMASTER tow bar is equipped with an exclu-
sive “quick-disconnect” (or, “QD”) system. Before connect-
ing the tow bar to the vehicle, first install the components
of the QD system to the baseplate.
Note: the quick-disconnect system is not used with
ROADMASTER ‘MS,’ ‘MX’ or ‘EZ5' series baseplates. If
the towed vehicle has MS, MX or EZ5 baseplates, proceed
to the next section — “Connecting the tow bar.” The quick-
disconnect system should be reserved, however, for sub-
sequent vehicles which may not have these baseplates.
1. First, attach the quick-disconnects (“QDs,” parts “A”
and “B” in Figure 1) to the tow bar baseplate. Attach the
QDs so that the vertical pin on each is pointing up, as
shown in Figure 1.
Attach part “A” on the passenger side and part “B” on
the driver’s side. Use the supplied ½" x 1¾" bolts, the
two safety plates (parts “C”), and the flat washers, lock
washers and nuts, as shown in Figure 1.
Both QDs have cable anchors — parts “D” and “E” in
Figure 1 — designed for safety cable attachment. Bolt cable
anchor “D” to part “A,” and cable anchor “E” to part “B,”
using the supplied ½" bolts, washers and nuts.
Do not tighten any of the bolts — leave them loose for
now — they will be tightened later.
Use all mounting hardware, the safety plates and the
cable anchors. If all supplied materials are not used,
the quick-disconnects, the quick-disconnect bases or
other components may vibrate loose, which may cause
property damage, personal injury or even death.
2. Now, test-fit the crossbar — lower the crossbar (Fig-
ure 2) over the quick-disconnects. The vertical pins at
the top of both QDs should fit through the top holes
at the ends of the crossbar (Figure 2), and the verti-
cal pins at the bottom of the crossbar should fit through
continued on next page

4
tow bar is connected directly to the baseplate with the
base pins and linch pins.
The QD system is also not used with ‘EZ5' base-
plates.
With these exceptions, the instructions below apply.
2. Drive the vehicle within three or three-and-a-half feet of
the motorhome hitch receiver. The vehicle does not have
to be perfectly centered to the hitch receiver, just close.
Then, put the vehicle in gear (park), set the emergency
brake and chock one of the wheels.
3. With the tow bar in the folded position (Figure 4), insert
the stinger into the motorhome hitch receiver and attach
the stinger to the hitch receiver with the hitch pin and clip
(Figure 4).
CAUTION
Attach the tow bar so that the locking mechanisms
and the release latch are pointing up. Components of
the tow bar may be damaged if the tow bar is attached
with the release latch and the locking mechanisms
pointing down.
4. Hold both tow bar arms firmly and rotate them up, so
that they are vertical, as shown in Figure 4.
continued on next page
CAUTION
Use caution when handling the tow bar — if your
hands, fingers or any part of your body are caught
between moving components, they can be pinched,
cut or otherwise injured.
1. Follow the preceding section in this manual — “Install-
ing the ‘quick-disconnect’ system” — to attach the tow bar
quick-disconnects (“QDs”) and the QD bases.
Note: the quick-disconnect system is not used with
ROADMASTER ‘MS’ or ‘MX’ baseplates. Instead, the
CONNECTING THE TOW BAR
Figure 4
cal pins on both quick-disconnects. Refer to Figure
3.
Failure to properly attach and lock all linch pins
will result in the loss of the towed vehicle, which
may cause property damage, personal injury or even
death.
Installing the ‘quick-disconnect’ system
continued from preceding page
the lower holes on the quick-disconnects (Figure 2).
3. The quick-disconnects must be positioned so that the
tow bar is centered on the front of the vehicle.
If necessary, adjust the quick-disconnects by moving
them to the left or the right, until the tow bar is centered
to the front of the vehicle
CAUTION
The quick-disconnects must be centered on the
baseplate. If they are attached too far to the left or
the right, the tow bar will not be centered on the towed
vehicle, which will cause excessive tire wear and other
consequential, non-warranty damage.
4. Once the crossbar slides on and off easily, torque the
six bolts to 75 ft./lbs. Again, test-fit the crossbar over the
QDs, to verify that the crossbar slides on and off easily.
If it does not, adjust the QDs again.
5. Insert the linch pins (Figure 3) through the upper
holes in the vertical pins on both QDs. All linch pins must
be locked. The rings are spring-loaded — they must be
snapped over the pin, with the pin touching the ring, in
order to keep the tow bar secure. If a pin does not touch
the ring, rotate the pin around the ring.
Towing vibrations will force the linch pins out un-
less they are properly locked in place over the verti-
Figure 3

Figure 5
5
Additionally, check the other components of your towing
system, to ensure that they are fully engaged.
Both tow bar arms must be locked before towing. If
they are not, the momentum of the towed vehicle will
apply excessive force to the tow bar arms and other
components of the towing system, which may cause
the towing system to fail, resulting in property dam-
age, personal injury 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.
If the baseplate, safety cables, hitch receiver or any
supplementary towing equipment is not rated at the
weight of the towed vehicle and all its contents, it may
fail during towing, causing property damage, personal
injury or even death.
If the motorhome hitch receiver has an extension,
do not tow if the tow bar is more than three inches
out of level.
Receiver extensions cause the towing system to
swing much higher and lower than towing systems
without extensions. This enlarged arc of motion cre-
ates excessive strain on the tow bar, baseplate and
frame, which can cause the towing system to fail,
causing property damage, personal injury or even
death.
Connecting the tow bar
continued from preceding page
Never release the tow bar arms when they are in
the vertical position. The arms can fall and cause se-
vere personal injury.
5. Push the release latch (Fig-
ure 5) forward, to bring both arms
down to a horizontal position.
Standing to one side, swing
both arms away from you. Then,
align the holes in the outermost arm
with the holes in one of the tabs on
the quick-disconnect base (Figure 6).
Attach the tow bar arm to the quick-disconnect base
with one of the included base pins (Figure 6). Attach the
arm so that the head of the shoulder bolt (Figure 6) is
facing up. Lock the base pin with a linch pin (Figure 6) or
optional padlock — part number 301 (one padlock) or 302
(two padlocks).
The linch pin must be locked. The ring (Figure 3)
is spring-loaded — it must be snapped over the pin, as
shown in Figure 3, 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 quick-
disconnect bases 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
quick-disconnect bases.
Failure to properly install and lock both base pins
will result in the loss of the towed vehicle, which
may cause property damage, personal injury or even
death.
6. Now, swing the other arm to the opposite side and
connect it in the same manner.
7. Attach the safety cables and plug in the electrical wir-
ing cord, according to the supplier’s instructions.
Before towing the vehicle, be sure the steering is un-
locked, the transmission is in the proper setting, and the
emergency brake is released. Remove the wheel chock.
Check the manufacturer’s specifications, the own-
er’s manual or talk to the installer for the proper towing
procedure(s) or requirement(s) for the vehicle to be towed.
Do not tow the vehicle until the tow bar is attached
with all pins or padlocks. Unless the tow bar is se-
cured to both vehicles with all appropriate pins or
padlocks, the vehicle will detach, which may cause
property damage, personal injury or even death.
When you drive away, steer briefly to the left and then
to the right, to extend, self-center and lock the tow bar.
Always stop at this time. Check the tow bar to ensure
that both arms are locked before assuming highway speed.
Figure 6

1. Disconnecting the tow bar is essentially the reverse
of connecting it. First, always try to park on level ground,
with the towed vehicle in line with the motorhome. This
will eliminate most of the tension between the vehicles,
allowing for an easier disconnect.
2. Disconnect the electrical wiring harness, safety cables
and any other towing sys-
tem accessories.
3. Lift the release handles
on each tow bar arm (Fig-
ure 7) to release the lock-
ing mechanisms.
(Usually, one of the
handles will require more pressure to release. This is the
arm that has the majority of the tension between the two
vehicles.)
Always put the towed vehicle in gear (park), set the
emergency brake and chock one of the wheels after
lifting the release handles, and before removing the
base pins. Failure to do so may result in a ‘runaway’
vehicle or may crush you between the towed vehicle
and the motorhome, causing property damage, per-
sonal injury or even death.
4. Put the towed vehicle in gear (park), set the emergency
brake and chock one of the wheels.
5. Remove the base pins and store the tow 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 8) is binding the pins in place.
6
Allow the towed vehicle to idle forward just enough to
take the tension of this weight off the pins. Then hold the
vehicle in position by first applying the emergency brake,
then shifting into park.
Once the tension is off, lift the release handles again
and the pins will slide out easily.
ROADMASTER recommends replacing at least one
of the linch pins with a padlock (part number 301, 302 or
308) to prevent accidental release or theft.
CAUTION
The tow bar can be stored on the motorhome with
the arms rotated to the left or the right. To avoid the
possibility of damage to the bushings, rotate the arms
away from the engine exhaust.
The bushings at the end of the tow bar arms can
be warped by heat from the exhaust. If the bushings
are warped, the tow bar arms will not slide easily, or
they may not slide at all — it may be difficult to con-
nect or disconnect the tow bar until the bushings are
replaced.
Figure 7

DISCONNECTING THE TOW BAR
Figure 8

7
Pin Wire Motorhome/
Number Color Towed Vehicle
1 ..........Blue...........Brake monitor light
(electric trailer brakes)
2 ..........Black .........Auxiliary/Charge
3 ..........Green........Right Turn/Stop
4 ..........Brown........Taillights
5 ..........White.........Ground
6 ..........Yellow........Left Turn/Stop
Figure 9
front of
6-wire plug
5. Connect the power cord to the motorhome and towed
vehicle. Test the towed vehicle’s turn signals, tail lights
and brake lights to ensure they operate in conjunction
with those of the motorhome.
Wiring the socket for a seven-wire system
If the motorhome does not have an electrical socket or
has the wrong socket, install and wire the socket according
to Figure 10. A socket bracket (optional) must be installed
at the rear of the motorhome, as close to the center as
possible, to a surface of sufficient strength to hold it firmly
in place.
front of
6-wire socket
WIRING INSTRUCTIONS
If you should need to rewire the six-wire plug and socket,
or wire a seven-way socket, follow the instructions below.
CAUTION
If it's necessary to attach an electrical socket bracket
(see below), make certain to attach the bracket close to
the center of the towed vehicle. If the bracket is attached
too far to either side, the bracket and the electrical
socket may be pulled away when the motorhome turns.
If the plugs and sockets are not properly wired, the
electrical connection will not function, and the towed
vehicle’s turn signals and brake lights will not mimic
those of the motorhome. Drivers behind the towed
vehicle will not be alerted by turn signals or brake
lights, 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 ¼" to 3/8" of insulation from the ends. Connect
the wires according to Figure 9; apply a silicone sealant to
the attachment points to help prevent damage from moisture
and corrosion.
Wiring the socket for a six-wire system
1. If necessary, find a suitable location to install one of
the electrical socket brackets on the front of the towed
vehicle, in reach of the existing six-wire harness. The
bracket must be attached close to the center, and to a
surface of sufficient strength to hold it firmly in place.
2. Strip ¼" to 3/8" of insulation from the ends of the wires.
Loosen the set screw at the back of the socket and push
the inner connector out the front. Then run the six-wire
electrical cord through the back of the protective boot and
the housing.
3. Loosen all of the set screws on the side of the socket, and
connect the wires to the back of the socket as shown in Figure 9.
4. Tighten all the set screws and check each wire to
ensure that it is fastened securely. Apply a clear silicone
sealant around each wire entry and set screw indentation
to help weatherproof the socket and secure the set screws.
Pin Socket Roadmaster Motorhome/
Number Code Wire Code Towed Vehicle
1......... White......... White.............. Ground
2......... Blue........... Blue................ Brake monitor light
(electric trailer brakes)
3......... Green........ Brown............. Taillights
4......... Black......... Black.............. Charge line
5......... Red ........... Yellow ............ Left turn/Stop
6......... Brown........ Green............. Right turn/Stop
7......... Yellow ....... N /A* ................ Auxiliary/Access
* ‘N/A' means this socket is not used in this wiring
configuration.
Figure 10
front of
7-wire socket

8
should not hang down to the extent they may catch on
obstructions, or drag on the ground. This much slack could
cause damage to the towing system, the towed vehicle,
or the motorhome.
If the cables are too long, wrap the excess cable around
the tow bar to take up the slack. Make sure there is
enough slack in the cables at the motorhome to allow
for sharp turns.
Damage caused by using safety cables of an incorrect
length is not covered under warranty.
•Always cross the cables under the hitch receiver, as
shown in Figure 11. In the unlikely event the tow bar sepa-
rates from the motorhome, crossing the cables will help
prevent the tow bar from dragging on the ground, which
can cause the tow bar to “pole vault” the towed vehicle.
•Some ROADMASTER tow bar mounting kits with re-
movable arms use two safety cables on each side. If two
sets of safety cables are required, both must be used. This
is required by law. Refer to “Proper installation of safety
cables” for further information.
Failure to follow these instructions may cause prop-
erty damage, personal injury or even death.
HOW TO USE SAFETY CABLES
Safety cables are an integral part of your towing system.
They are a secondary safety 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 exceed 8,000 pounds.
• Pull the safety cables so that all the slack is at the mo-
torhome. Make sure there is enough slack in the cables
at the motorhome to allow for sharp turns — if there
is not enough slack, the towing system will be severely
damaged when the motorhome turns a sharp corner.
•The safety cables must be the correct length…
•Make sure the cables are not too short — if you use a
receiver hitch extension or other equipment that extends
the distance between the towed vehicle and the motor-
home, the standard cables may be too short. If the cables
are too short, the towing system will be severely damaged
when the motorhome turns a sharp corner.
(Safety cable extensions in a variety of lengths are
available from ROADMASTER.)
•Make sure the cables are not too long — the cables

9
PROPER INSTALLATION OF SAFETY CABLES
Some ROADMASTER tow bar baseplates with remov-
able arms, such as the ones in Figures 11 and 12, use
both a long safety cable and a short safety cable on each
side. Each long safety cable runs from the towing vehicle
to a cable anchor. Connect each long safety cable to a
cable anchor by inserting it through the top of the slot in
the cable anchor bracket and dragging it down.
Both ends of the short safety cables are connected by
quick links. One quick link is attached to the baseplate
and one is attached to the cable anchor.
Unscrew the nuts on each quick link to connect the
safety cable loops. Finger-tighten the nuts firmly, until the
loop is completely closed, to secure the attachment.
Do not substitute carabiners or other devices for the
quick links — the quick links are designed to hold the weight
of a towed vehicle; carabiners or other devices are not.
Only ROADMASTER baseplates with removable arms
use these short safety cables. Other baseplates are bolted
directly to the frame of the towed vehicle and do not re-
quire short safety cables. If your ROADMASTER baseplate
kit contains short safety cables, refer to the installation
instructions for complete information.
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 result in
cable failure, which may cause property damage, per-
sonal injury or even death.
If the quick links are not completely tightened, with
the loop closed, the safety cables may detach. In the
event of a towing system failure, the towed vehicle will
detach, which may cause property damage, personal
injury or even death.
If your towing system requires two sets of safety
cables, always use both the long and the short safety
cables. Connect them as shown in Figures 11 and 12.
Otherwise, in the event of a towing system failure, the
towed vehicle will detach, which may cause property
damage, personal injury or even death.
Figure 11
Figure 12

After cleaning the tow bar, wipe any remaining cleaner
away.
Now that you have a clean, dry tow bar, use a dry
silicone lubricant, such as LubeMaster (part number 747),
to lubricate the tow bar — spray a liberal amount of the
silicone into all moving parts. Flex the tow bar components,
to work the lubricant in. LubeMaster sprays on wet, then
dries in seconds, so it won't attract dirt or debris.
(Using a silicone lubricant on the base pins will make
them easier to pull out, and also creates an oxygen barrier
which helps prevent corrosion.)
CAUTION
Always clean the tow
bar arms, as described
above, before lubricat-
ing them. Silicone coats
and covers in a thin lay-
er. If it is not removed,
it will reduce the clear-
ance, preventing proper
operation.
Extended storage —
continued on next page
10
STAY WITHIN THE ‘SAFE ZONE'
Compare these two measurements. To be within the
Safe Zone, they cannot be more than three inches apart
if the base pin is above or below the motorhome hitch
receiver. See Figure 13.
If the tow bar is not within the Safe Zone, you must
purchase a hitch accessory to raise or lower the hitch
receiver. ROADMASTER has accessories available — Hi-
Low Hitches and Dual Hitch Receivers — which will raise or
lower the hitch receiver from two to 10 inches, depending
on the model.
Towing with the tow bar more than three inches above
or below level will void the ROADMASTER warranty.
Failure to follow these instructions may cause prop-
erty damage, personal injury or even death.
Towing with a motorhome-mounted tow bar which has
an upward or downward slope puts 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 system.
To determine if the tow bar is within the Safe Zone —
first, connect the motorhome and towed vehicle on level
ground. Next, measure the distance from the center of the
motorhome receiver down to the ground. Then, measure
the distance from the center of one of the base pins down
to the ground.
CARE AND CLEANING
Figure 13
Figure 14
As is the case with most precision equipment, frequent
cleaning and care results in better performance and lon-
gevity. Use the following guidelines to keep the tow bar
arms clean and well-lubricated.
Always clean the tow bar arms before lubricating. Use
a water-soluble cleaner such as ROADMASTER Tow Bar
Cleaner (part number 9932) — it does an exceptional job
of breaking down road film, dirt and grease.
To clean one of the tow bar arms, extend the arm
and liberally apply cleaner to the inner arm (Figure 14).
Work the arm in and out to flush out dirt from the inside
of the assembly. Wipe the dirt off and repeat until the arm
is clean.
Repeat for the other arm.
CAUTION
Do not use petroleum-based products to clean or
lubricate the tow bar. Petroleum will attract dirt and
dust, which will impede the operation of the sliding
arms and/or other components. Certain petroleum
products may also corrode non-metallic components.
Damage caused by using a petroleum-based prod-
uct to clean or lubricate the tow bar is not covered
under warranty.

11
Care and cleaning
continued from preceding page
before storing your tow bar for an extended period of time,
be sure to clean and lubricate it as above. Store the tow
bar in its cover (optional, part number 055-3), to protect
it from the elements.
Note: to remove scratches and restore luster on the in-
ner arms, we suggest that you use extra fine (0000) steel
wool, 3M “Scotch Brite” (fine pad) or a similar product.
LIMITED WARRANTY
1. WARRANTY
1a. WARRANTY OF CONFORMITY AT TIME OF SALE
ROADMASTER, Inc. warrants that at the time of sale of this product
it will be free from defects in material and manufacture and will conform
to ROADMASTER’S specifications for the product.
1b. CONDITIONAL ONE-YEAR WARRANTY
In addition to the preceding time-of-sale warranty, if the product
registration card is completely and accurately filled out and mailed to
ROADMASTER within thirty (30) days of purchase, ROADMASTER
will provide an additional warranty that for a period of one year after
sale the product will remain in good working order, PROVIDED THAT
the product is installed and maintained in accordance with ROAD-
MASTER’S instructions and is not subjected to: (a) alteration or un-
authorized repairs or repairs by anyone other than ROADMASTER
or a ROADMASTER-authorized service center, (b) misuse, abuse,
commercial use, or improper maintenance, (c) Acts of God (including
without limitation hurricanes, tornadoes, floods, or other severe weather
or natural phenomena), (d) failures due to products not supplied by
ROADMASTER, or (e) other treatments, uses, or installations for which
the product was not intended. This warranty extends only to the first
retail purchaser-consumer of the product and is not transferable.
EXTENDED WARRANTY PERIOD: If ROADMASTER receives the
product registration card, completely and accurately filled out, within
thirty (30) days of purchase, ROADMASTER will enlarge the one-year
warranty period in the preceding paragraph to a period of two years.
2. DISCLAIMER OF OTHER WARRANTIES
The preceding warranties are the exclusive and sole express war-
ranties given by ROADMASTER. They supersede any prior, contrary
or additional representations, whether oral or written. No agent, rep-
resentative, dealer or employee has the authority to alter or increase
the obligations or limitations of this warranty. Any implied warranties,
including the WARRANTY OF MERCHANTABILITY and any WAR-
RANTY OF FITNESS FOR A PARTICULAR PURPOSE, are limited in
duration to thirty days or the term of the applicable express warranty
provided above, whichever is longer.
Some states do not allow limitations on how long an implied warranty
lasts, so the above limitation may not apply to you.
3. EXCLUSIVE REMEDY FOR ANY NONCONFORMITIES
If during the applicable Warranty Period, the product does not conform
to the preceding Warranties, notify ROADMASTER as provided below,
and within a reasonable time ROADMASTER will provide, at its option,
one of the following: (1) replacement components for any nonconform-
ing or defective product or components or (2) the percentage of the
purchase price for the nonconforming product equal to the percentage
of the Warranty Period remaining when ROADMASTER is notified of the
nonconformity. ROADMASTER will, at its option, (a) use new and/or
reconditioned parts in performing warranty repairs and making replace-
ment products, (b) use parts or products of original or improved design
in the repair or replacement. If ROADMASTER repairs or replaces a
product, its warranty continues for the remaining portion of the original
Warranty Period or 60 days from the date of the return shipment to
the customer, whichever is greater. All replaced products and all parts
removed from repaired products become the property of ROADMAS-
TER. ROADMASTER will not provide, and will not be liable for, labor,
costs of removal or reinstallation of components, disposal, shipping,
freight, taxes, or other incidental charges.
THESE REMEDIES ARE THE EXCLUSIVE AND SOLE REMEDIES
FOR ANY BREACH OF WARRANTY.
For any breach of warranty, the Owner must telephone ROADMAS-
TER at 1-800-669-9690 within thirty (30) days after discovering the
nonconformity. Do not return any product without first calling ROAD-
MASTER and getting a return authorization number. Returned prod-
ucts must include the return authorization number and a copy of the
original invoice, bill or other proof of the date of purchase. The date
of purchase must coincide with the original warranty registration card
on file. ROADMASTER will authorize (a) shipment of the product to
ROADMASTER or (b) repair or replacement at the nearest warranty
service center—in both cases with shipping at your expense. Do not
purchase replacement parts or pay for repair labor—you will not be
reimbursed. Compliance with the requirements of this paragraph is a
condition to coverage under the Warranty: if these requirements are
not complied with, ROADMASTER will have no obligation to provide
any remedy for any breach of warranty.
4. DISCLAIMER OF INCIDENTAL AND CONSEQUENTIAL DAM-
AGES
IN NO EVENT SHALL ROADMASTER BE LIABLE FOR ANY IN-
CIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES,
WHETHER RESULTING FROM NONDELIVERY OR FROM THE USE,
MISUSE OR INABILITY TO USE THE PRODUCT OR FROM DEFECTS
IN THE PRODUCT.
Some states do not allow the exclusion or limitation of incidental
or consequential damages, so the above limitation may not apply to
you.
5. APPLICABLE LAW
This Warranty will be interpreted, construed, and enforced in all re-
spects in accordance with the laws of the State of Washington, without
reference to its choice of law rules. The U.N. Convention on Contracts
for the International Sale of Goods will not apply to this Warranty.
6. SEVERABILITY
If any provision of this warranty is found to be invalid or unenforce-
able, then the remainder shall have full force and effect, and the invalid
provision shall be partially enforced to the maximum extent permitted
by law to effectuate the purpose of the agreement.
7. ADDRESS FOR NOTICES TO ROADMASTER
ROADMASTER, Inc., 6110 NE 127th Ave, Vancouver, WA 98682
This warranty gives you specific legal rights, and you may also have
other rights which vary from State to State.

STERLING ALL TERRAIN COMPONENTS
part
description number
1quick-disconnects, complete
car side set (color-coded red)....................................222
1a linch pins (two)..............................................910024
2safety cable anchor brackets, complete set —
driver's and passenger side
(color-coded black) ..............................................910653
2a driver’s side only ......................................910653-01
2b passenger side only .................................910653-02
3quick-disconnect crossbar only .................................067
quick-disconnect crossbar assembly
(color-coded red, blue and black;
includes 1, 3 and 4) .................................910021-00
4base pin, cable and linch pin
(two each; color-coded blue) ............................... 910029
5swivel ear assembly, one each —
includes part numbers 5a, 5b
and 5c (color-coded red)......................................910661
5a ½" x 2" screw...........................................350376-00
5b nylon lock nut...........................................350255-00
5c ½" nylon washer ......................................350356-00
6Freedom Latch lock handle and
rubber grip (color-coded blue) ............................. 750600
7Freedom Latch spring replacement kit with
latch caps — contains four latch caps (part
number 7a), and two springs and two snap
rings (not shown) — color-coded red.................... 910652
7a latch cap only...........................................200460-00
8stinger assembly, complete
(color-coded black; part numbers
8a and 8b sold separately) .............................910019-40
8a hitch pin clip (two)......................................... 910028
8b hitch pin and clip (one each) ........................ 910027
part
description number
9yoke assembly with bushing
(color-coded red; part numbers
9a through 9e sold separately) ............................ 910575
9a ¾" x 4¾" bolt ...........................................350190-20
9b ¾" jam nut................................................350264-10
9c ¾" lock nut ...............................................350267-01
9d ¾" x 4-1/8" bolt ........................................350191-00
9e ¾" nylon washer (one each; 13
necessary for complete tow bar)..............350358-00
10 inner arm assembly, driver's
and passenger side (color-
coded blue) .....................................................910660-10
11 snap-in bushing (color-coded blue)....................A004608
NOT SHOWN
• 4-wire straight electrical cord.................................98164
• 6-wire straight electrical cord.................................98146
• 7-wire to 6-wire straight electrical cord...............98146-7
• 7-wire to 4-wire straight electrical cord...............98164-7
• 4-wire electrical cable with one 4-wire plug......... 650814
• 6-wire electrical cable with one 6-wire plug......... 650816
• 4-wire socket only ...........................................300001-00
• 6-wire socket only ...........................................300008-10
• 7-wire plug only .............................................. 300011-00
• 68" 8,000-pound capacity EZ Hook safety cables
(pair) — included with Sterling All Terrain ...............655
• 76" 8,000-pound capacity EZ Hook safety
cables (pair) — for towing combinations with
accessories which extend the length of the
towing system....................................................655-76
• 10" 8,000-pound capacity
baseplate safety cables (pair).........................650648-10
• quick links (pair)..............................................200008-00
Please have your serial number
handy when calling for repair parts,
as not all versions of this tow bar
use the same parts.