MCi Crusader II 1989 Maintenance Manual page 10

Date
1-1-89
Page 1-4
MC-9 MAINTENANCE MANUAL
pins. Figures 1-3 and 1-4 show the steering knuckle construc-
tion of the two different axles.
1. Draw Key - Upper
2. Knuckle Pin
3. Knuckle Bushing • Upper
4. King Pin Cap - Upper
S. Shims
6. Draw Key • Lower
7. Thrust Bearing
8. King Pin Cap • Lower
9. Knuckle Bushing • Lower
10. Knuckle/Spindle
Figure 1-3. Steering Knuckle (Later MC-9)
1.
Knuckle Upper Bushing
7. Expansion Plug Lock Ring
2.
Knuckle Pin Sleeve ·
8. Expansion Plug
3. Upper Dust Cap 9. Knuckle Lower Bushing
4. Knuckle Pin Nut
10. Tapered Knuckle Pin
5. Shims
11. Knuckle/Spindle
· 6. Thrust Bearing
Figure 1-4. Steering Knuckle {Earlier MC-9).
STEERING KNUCKLE REMOVAL
1.
Block the·rear wheels to prev·ent the vehicle from rolling.
Jack up front of coach so thattires clear floor. Block up securely
at this position and remove jacks. Refer to Section 3. Coach
Jacking Points.
WARNING: Do not attempt to disassemble
or perform knuckle repair with vehicle sup-
ported by jacks only.
2. Remove front wheels. hubs and bearings as directed 1n
Section 15.
3. Remove brake chambers and brake shoe hardware from
steering t\!1uckle. Detach brake shoe spider from knuckle and
remove spider. camshaft and slack adjuster as an assembly.
4. Remove drag link and tie rod from steering arm. Refer to
Steering. Section
11.
5. Remove nuts from steering arms and drive arms out of
steering knuckles.
NOTE: It is not necessary to remove steer
0
ing arms unless service or inspection is
necessary.
6. Upper and lower knuckle pin covers are present on the
newer style axles with straight type knuckle pins. The original
MC-9 axle, with the tapered knuckle pin, has a cover on the top of
the pin only. Remove the capscrews from the cover(s) and the
gasket(s) beneath the cov_er. See figure 1 -5.
·
Figure 1-5. Removing Knuckle Pin Cover.
The tapered type knuckle pin has an expansion plug and
lock ring at its tower end. Remove the lock ring with a pair of
snap ring pliers. Dislodge and remove the expansion plug with
a small drift.