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3B1A-16 POWER STEERING GEAR UNIT REPAIR
GEAR SERVICE ADJUSTMENTS
Tools Required:
J 7754-01 Torque Wrench
NOTICE:
Repair the steering gear in a clean, dust-free
location. U se clean tools and equipment. Dirt or grit will
damage the machined surfaces and result in leaking, or
damage to the steering gear assembly.
Do not adjust with the steering gear installed in the vehicle.
It is difficult to properly adjust the preload w hile taking
torque readings through the steering Column. Take the time
to make the adjustments properly, with the gear removed
from the vehicle.
0
Adjust
Inspect
•
Front end alignment.
•
Drag link adjustment,
•
Tire pressure.
1.
Place a container under the steering gear or pumpjtb
catch fluid when disconnecting or connecting the
power steering lines. Remove the gear from the
•'■'-vehicle.-;
.i
•
Disconnect drag link from the pitman arm.
•
Disconnect steering coupling from the gear.
•
Disconnect power steering lines at the gear.
•
Remove four bolts that attach the gear to the
gear support.
2.
Place the gear in a vise.
Important
Be sure to clamp the gear using soft jaws.
Clamp only on the mounting pads. Clamping
the steering gear elsewhere can affect your
preload readings and cause gear damage.
3.
Drain the oil from the gear by rotating the gear;
through its complete travel several times.
: j*
4.
Center the steering gear by turning the stub shaft
from the right wheel stop to the left wheel stop While
counting the number o f turns/ Rotate the stub shaft
back half the o f number turns to center position, i
5.
Use torque wrench J 7754-01 and adeepw ell
3/4" 12 pt. socket. Check the total preload torque by
rotating through a 180° arc either side o f center.
Take the reading while turning back over the center
position. Record the highest reading.
6.
Turn stub shaft one half turn (180°) right or left from
center. Install torque wrench vertical on stub shaft.
Turn torque wrench 20° left or right o f vertical.
Take torque reading while turning torque wrench
back to vertical. Subtract this reading from reading
taken in step 5. If the reading in step 5 is 0.23 N*m
(2 lb. in.), then the gear is adjusted properly. Go to
step 7. If less than 0.23 N*m (2 lb. in.), proceed with
the following adjustments.
■
•
If the reading in step 5 is at least 0.23 N»m
(2 lb. in.) arid not more than 1.13 N #m
(10 lb. in.), the gear is in proper adjustment.
Proceed with adjustment in step 7.
•
If the reading in step 5 is less than 0.23 N*m
(2 lb. in.) or more than 1.13 N*m (10 lb. in.),
proceed with adjustment in Steps 7 and 8.
7.
With the gear bn center, loosen adjuster plug lock
nut. Using spanner wrench J 7624, turn the adjuster
plug in (clockwise) until firmly bottomed in the
housing (approximately 201b. ft.).
•
Mark the housing even with one o f the holes
in the adjuster plug.
•
M easure back in a c o u n te r c lo c k w ise
8
.
9.
direction 1/2 inch (approximately 20°) and
make a second mark on the housing.
•
Rotate adjuster plug counterclockwise until
hole in adjuster is in line with second mark.
•
Tighten lock nut. Make sure adjuster plug
does not move while lock nut is tightened.
•
Turn the stub shaft two turns right or left from
center. With the torque wrench installed on
the stub shaft near vertical, take the torque
reading.
The torque reading should be
0.56-1.13 N*m(5-10 lb. in.) while turning
!
the torque wrench in an arc 20° left or right o f ;
I
vertical.
With the gear on ceriter, loosen the pitman shaft
adjuster lock nut. Make sure the adjusting screw is
backed out counterclockwise all the way. Turn the
adjuster screw clockwise 1
12
turn. This prevents the
pitman shaft from bottoming out in the side cover.
•
Check preload by putting the torque wrench
vertical. Then move .90? left or right of
center. The torque reading should be the
highest reading taken while turning the torque
wrench back to center. Record the reading.
•
Tighten the adjuster screw clockwise until
the torque \yrench reading is 0.68-1.13 N*m
(6-10 lb. in.) higher than the reading taken in
previous step;
•
Tighten the lock nut to 90 N*m (66 lb. ft.). Be
sure the adjuster screw does not turn.
Recheck the preload after tightening
the locknut.
Reinstall steering gear in vehicle.
Summary of Contents for C Series 1993
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Page 44: ...3B1A 2 POWER STEERING GEAR UNIT REPAIR Figure 1 710 Power Steering Gear ...
Page 62: ......
Page 75: ...3B3 2 POWER STEERING COMPONENTS TRW ROSS ...
Page 121: ...5H 16 AIR BRAKE VALVES Figure 21 Bendix Proportioning Relay Valve Components ...
Page 147: ...5J 10 AIR COMPRESSOR AND GOVERNOR 286 F9051 Figure 18 Bendix BX 2150 Compressor Components i ...
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Page 251: ...6D4 6 37 MT STARTER MOTORS V3022 Figure 8 37 MT Components ...