Trail Master Suspension TM413N FORD SUPER DUTY F-350 4WD DIESEL SUSPENSION LIFT KIT User Manual
Page 13
TM411N, TM412N,
TM413N, TM414N
Revised
7.11.13
13
15. Remove the (2) bolts that secure the center
drive shaft bearing. Lower bearing and install
1/4” of shim thickness for each inch of rear
lift. Use new 7/16” X 2 1/4” bolts and torque
to 55 ft./lbs.
NOTE: 1/4” of shim for each inch of
lift is only a starting point. Only by driving the
vehicle and adding or removing shims can the
high speed vibration be totally eliminated. The
off the line vibration is caused by axle wrap up
and cannot be eliminated with these products.
16. If vehicle came equipped with a rear sway
bar, assemble the rear sway bar end links
(82-2446) using the bushings (45359) and
sleeves (60859H).
17. Secure the new rear sway bar end links (82-
2446) to the frame and the sway bar using the
provided 12mm-1.75 X 70mm. Torque the
bolts according to the torque chart on page
19.
18. Secure the new rear brake line bracket (90-
7031) to the rear axle by reinstalling the vent
tube.
19. Secure the OE brake line bracket to the new
brake line bracket (90-7031) using the sup-
plied 3/8” X 1” bolt and hardware.
20. Reinstall the wheels and tires and lower the
vehicle to the ground. Torque lug nuts to
manufacturer specification.
21. Torque the spring mounts at this time. The
front bolts are torqued to 250 ft. lbs. and the
rear bolts are torqued to 185 ft. lbs. Torque
the 5/8” U-bolts to 120
ft. lbs.
22. Re-check the wheel lug torque on all four
wheels at this time.
23. Re-check all hardware (both the front and the
rear) for proper installation and torque!!
24. If you wish, you may trim the excess u-bolt
thread length. If you do this you should
leave approximately one inch of thread ex-
posed after the U-bolts are torqued.
25. On both sides of the vehicle, check the
routing of the brake lines and the ABS wire
harnesses. There must be no pinching,
rubbing, or stretching of either component.
Reposition them if needed.
NOTES:
On completion of the installation, have the
suspension and headlights re-aligned.
After 100 miles recheck for proper torque
on all newly installed hardware.
Recheck all hardware for tightness after
off road use.