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 TM 9-2320-285-24-2
3-28.
STEERING SYSTEM MAINTENANCE (CONT)
d. Power Steering Gear (cont).
STEP
LOCATION
ITEM
ACTION
REMARKS
TESTING (cont)
17
Input torque
Test: Rotate top cover assembly (1) worm
shaft through five cycles of full rota-
tion and repeat input torque check (step
16m above). Input torque must not exceed
15 pounds inch over full input shaft
rotation of 95 degrees and sector shaft
must not bind or have lash when in center
position
18
Reverse torque
Test: Rotate sector shaft (2) from stop-
to-stop using torque wrench and note
indications. Reverse torque for full gear
travel must not exceed 50 pounds foot in
either direction
NOTE
If steering gear is to be stored, plug one valve port and fill remaining valve port with clean hydraulic oil. Rotate top
cover assembly (1) worm shaft while filling to remove air. Then plug remaining valve port.
INSTALLATION AND ADJUSTMENT
19
Front left
a
Steering gear
Position
On outside of frame rail,
frame rail
with mounting holes aligned
b
Four capscrews
Install
Tighten alternately to 320
and lock
pounds foot
washers
20
Steering
a
Sector shaft
Center
Rotate top cover assembly (1)
gear
(2)
worm shaft fully clock-
wise to stop; then rotate
counterclockwise 3.1 turns
to center sector shaft (2)
b
Pitman arm
Position
Install vertically, with
index mark on pitman arm
aligned with mark on steer-
ing gear shaft
3-274
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