TM 9-2330-238-14
4-57. TORQUE ROD REPLACEMENT.
This Task Covers:
a.
Lower Torque Rod Removal
c.
Upper Torque Rod Removal
b.
Lower Torque Rod Installation
d.
Upper Torque Rod Installation
Initial Setup:
Equipment Conditions:
Materials/Parts:
l Semitrailer
uncoupled
from
towing
vehicle
l Twelve Iockwashers
(para 2-1 1).
Tools/Test Equipment:
l General mechanic’s tool kit
l Hydraulic jack
l Torque wrench
l Four jackstands
a.
LOWER TORQUE ROD REMOVAL I
1,
Place jack under axle bracket assembly (7) and raise just enough to relieve spring tension from front and rear
main axle brackets.
2.
Remove two nuts (4) and Iockwashers (3) from torque rod ball ends (1 O) connecting lower torque rod (9) to axle
bracket assembly (7), and main axle lower torque rod mounting brackets (5). Discard Iockwashers.
CAUTION
The rubber-mounted torque rod ball ends allow rods to be moved out of normal
alinement for removal or installation. Extreme care must be taken to prevent damage to
threads on ball ends.
3.
Tap threaded ends of each torque rod ball end (1 O) with soft face hammer to loosen ball ends from axle bracket
assembly (7) and main axle lower torque rod mounting bracket (5).
4.
Work lower torque rod (9) from axle bracket assembly (7) and main axle lower torque rod mounting bracket (5).
5.
Remove two torque rod ball ends (1 O) from torque rod (9).
b.
LOWER TORQUE ROD INSTALLATION I
1.
Install two torque rod ball ends (1 O) into torque rod (9).
2.
Ensure that torque rod ball ends (1 O) and main axle lower torque rod mounting bracket (5) are free of dirt.
3.
Install lower torque rod (9) in axle bracket assembly (7) and main axle lower torque rod mounting bracket (5).
4.
Install two nuts (4) and new Iockwashers (3) on torque rod ball ends (1 O). Torque nuts from 225-280 Ib.-ft.
(305-380 N•m).
5.
Lower and remove jack from under semitrailer.
c.
UPPER TORQUE ROD REMOVAL I
1.
Raise rear of semitrailer with jack until wheels clear ground. Support semitrailer with jackstands.
2.
Remove wheel assemblies on same side as upper torque rod (1) to be removed (para 4-49).
4-118
