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Sec, 16
Page 174
GM COACH MAINTENANCE MANUAL
STEERING GEAR
figure 3-Steering Wheel Removal
6. Remove four bolts which attach steering
gear housing to understructure, then remove steer-
ing gear assembly from underneath coach.
7. Remove Pitman arm retaining nut and lock
washer. Note aligning marks on Pitman arm and
lever shaft.
If
marks are not clearly discernible,
punch mark both parts; then remove Pitman arm,
using a suitable puller.
NOTE:
Pitman arm may be removed
from lever shaft while steering gear is
installed in vehicle, if so desired.
STEERING GEAR DISASSEMBLY
Prior to disassembly operations, make sure
that steering gear, work bench, and tools are
clean.
Steering gear parts must be kept clean.
When mounting steering gear in vise or other
holding fixture, do not grip housing too tightly or
housing may be damaged. Refer to figures 5 and
6 for information.
Figure 4-Upper Shaft Bearing Removal
1.
Remove lever shaft adjusting screw lock
nut and turn adjusting screw out a few turns.
2.
Place pan under assembly to catch lubri-
cant; then remove housing side cover and gasket.
3. After lubricant has drained out of housing,
make sure outer end of lever shaft is free from
any burrs which might damage bushings.
With-
draw lever shaft assembly from housing.
4. To disassemble lever shaft assembly, bend
prong of lock washers away from stud nuts and
remove stud nuts.
Remove bearing inner races,
bearing rollers, and studs from bearing outer
races; then press outer races out of lever shaft.
5. Remove four socket head screws attaching
universal joint upper housing to lower housing.
Lift universal joint upper housing and upper jacket
tube assembly off upper shaft.
6. Remove shaft bearing assembly from upper
jacket tube, using puller similar to that shown in
figure 4.
7.
Loosen clamp bolt which attaches univer-
sal joint assembly to upper end of cam and shaft
assembly. Remove universal joint and upper shaft
as an assembly.
Remove Woodruff key.
Loosen
clamp bolt attaching universal joint to upper shaft;
then remove universal joint from shaft.
8. Remove four bolts attaching gear housing
upper cover to gear housing; then remove cover
and lower jacket tube assembly from gear hous-
ing.
Universal joint lower cover and gear hous-
ing upper cover are v'elded to lower jacket tube.
Save shims used between gear housing cover and
housing for use at assembly.
9. Remove lower jacket tube needle bearing
assembly from upper end of tube, using puller
similar to that shown in figure 4.
10. Pull cam and shaft assembly out through
top of gear housing.
Upper cam bearing is re -
moved from gear housing with cam and shaft.
Remove bearing from shaft.
11. Remove expansion plug from lower end of
gear housing; then remove lower cam bearing
from gear housing.
CLEANING AND INSPECTION (Figs. 5 and 6)
Clean all parts thoroughly in clean gasoline or
other suitable cleaning fluid.
Soak cam bearing
assembly, and lever shaft stud bearings in cleaner
to dissolve any particles of hard grease. When
all parts are clean, perform following operations:
1. Inspect cam bearings for excessive wear,
pitted balls, or broken or damaged retainers.
If
any of these conditions are found, replace bearing.
2. Examine stud roller bearings for pitting,
chips, or broken rollers.
If
any rollers have to
be replaced, it will be necessary to replace com-
plete set of rollers. Satisfactory operation cannot
be obtained if old and new rollers are installed in
same assembly.
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