Roadmaster 1139-143 User manual

part #1139-143
1½” diameter
Auxiliary Rear Anti-Sway
Bar Kit for the Ford F53
Installation Instructions
Thank you for purchasing our sway
bar kit. Please read through these
instructions before installation.
• General hand tools • 1/4”, 1/2” sharp drill bits
• 5/8”, 11/16”, 3/4”, 15/16”, 1-1/8” sockets • Torque wrench
SUGGESTED TOOLS
The following tools are suggested to complete the installation procedures:
INTRODUCTION
Thank you for purchasing this anti-sway bar kit. This kit is designed to improve the handling characteristics of your Ford F53
by reducing the body roll and balancing the weight transfer during cornering. The anti-sway bar kit is engineered for long life
and trouble-free performance. All the hardware needed for installation is included in this kit. Refer to the PARTS LIST in these
instructions to identify the parts.
•If raising the vehicle to install the anti-sway bar, always support
the vehicle with jack stands at both frame rails or at the rear axle
before working underneath. Ensure that the jack stands are securely
positioned, and are rated at or above the weight of the vehicle.
•The installer must read the instructions and use all bolts and parts
supplied. Use only the parts supplied by ROADMASTER to install
this kit.
•Minor modifications are sometimes necessary due to slight vehicle
variations, even for the same year, make and model.
•Regardless of year, make and model, a wide range of options for
specific applications may or may not interfere with the installation.
It is the installer’s responsibility to make certain that equipment is
not damaged once the suspension solution travels through the full
range of motion. Failure to ensure adequate clearance could result
in non-warranty property damage, personal injury or even death.
Failure to follow these instructions
can result in property damage, per-
sonal injury or even death.
WARNING
•If running changes were made by the manufacturer after this kit
was designed, there may be weldments, braces, gussets, or other
structural items which interfere with the installation. It is the in-
staller’s responsibility to allow for these running changes without
sacrificing the structural integrity of the anti-sway bar. Failure to
securely fasten the anti-sway bar could result in property damage,
personal injury or even death.
•ROADMASTER will not be responsible for any damage or injury
resulting from any modification or alteration.
•Check ALL the fasteners for tightness before and after road testing
the vehicle.
•Do not use this document for custom fabrication, as it may not
show all parts or structural components.
•Do not use an air impact wrench when re-installing bolts, as stripped
threads may result.
•This anti-sway bar is only warranteed for the original installation.
Installing a used anti-sway bar on another vehicle is not recom-
mended and will void the warranty.
Note: if the factory U-bolts are
not long enough to install this kit,
you will need to order new ones.
For square-top U-bolts, order kit
#590050-00; for round top U-bolts, order kit #590050-10.

PARTS LIST
2 • Ford F53 V-10 Rear Anti-Sway Bar Kit
2
Part #1139-143
Part # Description Qty
1. 580024-00 Anti-sway bar, 1-1/2” 1
2. B285 Shackle 2
3. 350074-00 Bolt, 7/16” x 1-1/2” 4
4. 350259-00 1/2” NC Locknut 4
5. B141 Bracket, U-clamp 2
6. 205217-10 Bushing, split poly 2
7. 350304-80 Washer, 3/8” 8
8. 350096-80 Bolt, 1/2” x 1-3/4” 4
9. 350256-02 Locknut, 7/16” 4
Part # Description Qty
10. 350308-00 Washer, 1/2” 8
11. B777 Bracket, flat 2
12. 350158-00 Bolt, 5/8” x 4” 4
13. 350263-00 Nut, 5/8” 4
14. B239 Brackets left and right 2
15. 400011-30 Aqualube Grease 1
16. 205202-10 Shackle Bushing 4
17. 205503-00 Sleeve 4
18. 205209-00 Bushing 4
15
11
13
39
7
4
10
8
1
14
17
16
12
56
*not pictured

Remove the parts from the box and match it with the parts list.
Make sure that the kit has all the parts shown on the parts list on
page 2.
Apply parking brake.
The following procedures can be done with the wheels of the ve-
hicle on the ground.
Locate u-bolts holding springs to axle.
Note: do not remove the factory anti-sway bar. This kit is designed
to support the factory anti-sway bar — not replace it. Remove nuts
from u-bolts on one side. Retain the factory axle bracket and add
a flat plate (B586) with small holes positioned toward front and
center of vehicle. Secure with the factory nuts and washers. Torque
to the manufacturer’s specifications. Repeat the process on the op-
posite side (Figure 1).
Install the saddle brackets and bushings on the anti-sway bar.
Lubricate the inside of the split bushings with the provided lubri-
cant. Install the bushings on the anti-sway bar near the arms. Slide
the saddle brackets over the split bushings.
Install the anti-sway bar assembly to the flat plates.
Lift the anti-sway bar assembly into position so that the saddle
bracket holes align with the flat plate holes. Use the provided
bolts (350074-00), washers (350304-80) and nuts (350256-02)
to attach it. Tighten to 35-45 ft.-lbs. Note: for applications under
18,000lb GVWR, use the holes offset to the center of the plate.
For applications over 18,000lb GVWR, use the holes closest to the
edge of the plate (Figure 2).
Locate shackles and fasteners.
Attach shackle (B285) to the anti-sway bar end with the provided
bolts (350158-00) and nuts (350263-00 — Figure 3). Do not
tighten yet.
INSTALLATION
The following instructions must be followed in the order listed to ensure a proper installation
and to preserve the ROADMASTER warranty.
Ford F-53 V10 Rear Anti-Sway Bar Kit • 5
1.
2.
4.
5.
6.
3.
Front
4
Figure 1
Figure 2
Figure 3
use for over
18,000lb
GVWR
use for under
18,000lb
GVWR

6 • Ford F-53 V10 Rear Anti-Sway Bar Kit
Attach the shackle hanger brackets.
Using the provided bolts (350158-00) and nuts (350263-00), attach
the hanger bracket to the top of the shackle.
Locate the shackle bracket mounting points.
Rotate the bar up and hold the shackle bracket against the bottom of
the frame rail. The location is correct when the shackle is straight up
and down with the vehicle at the normal ride height. Mark the location
of the holes in the frame rail. Check inside the frame rail for wires,
lines, etc., before drilling. Drill pilot holes and then final size. Attach
brackets with bolts, washers and nuts provided (Figure 4).
Finally, tighten the shackles.
Tighten both upper and lower bolts now to 30-45 ft.-lbs. Recheck all
fasteners for proper torque (Figure 4).
Test drive and re-inspect installation.
Listen for any unusual noises.
7.
8.
9.
10.
INSTALLATION
WARNING
Over-tightening the grommets may cause premature failure of the grommets and /or the end links. If the grommets fail,
the anti-sway bar will not stabilize the vehicle at full capacity, which may cause reduced cornering ability or other reductions
in vehicle handling or performance.
Failure to follow these instructions may cause property damage, personal injury or even death.
Figure 4
Do not tow or hoist the vehicle using the anti-sway bar or its
mounting brackets as attachment points. The anti-sway bar is not
designed to carry the weight of the vehicle and may collapse, which
will damage the anti-sway bar components, the suspension, or
other components. The vehicle will detach or fall, which may cause
severe personal injury.
Failure to follow these instructions may result in property
damage, personal injury or even death.
The anti-sway bar is not a load-bearing component
WARNING
After road testing, re-check all fasteners for proper tightness
— if a fastener has worked loose or fallen off, re-tighten or
replace it.
Without all kit components properly tightened or in place,
the anti-sway bar will not stabilize the vehicle at full capacity,
which may cause reduced cornering ability or other reductions
in vehicle handling or performance.
Failure to follow these instructions may result in property
damage, personal injury or even death.
BOLT TORQUE REQUIREMENTS
STANDARD BOLTS
Thread Grade Torque
3/8............. 5............ 30 ft./lbs.
7/16........... 5............ 50 ft./lbs.
1/2............. 5............ 75 ft./lbs.
5/8............. 5............ 140 ft./lbs.
Note: Endlink bolts use grommets and should NOT be torqued. Tighten these bolts by hand until the grommet
starts to deform. Also, these torque values are intended as general guidelines. Roadmaster does not warrant
this information to be accurate for all applications and disclaims all liability for any claims or damages which
may result from its use.
Thread Torque
3/8-24 ...................... 35 ft./lbs.
1/2-20 ...................... 70 ft./lbs.
5/8-18 ...................... 140 ft./lbs.
3/4-16 ...................... 250 ft./lbs.
7/8-14 ...................... 400 ft./lbs.
U-BOLTS
WARNING
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