GMC 1986 P-Truck Service Manual page 415

AXLE JOINT COMPONENT
REPLACEMENT
Remove or Disconnect
• Raise the vehicle.
. A xle s h a ft.
1
Replacement" earlier in this section.
• Support the shaft yoke in a bench vise or on
a short piece of pipe.
2. Trunnion
• Using a brass drift and soft hammer drive
on the end of a trunnion bearing enough to
drive the opposite bearing from the yoke.
• Support the other yoke and drive the
trunnion bearing out in the same manner.
Clean
The bearings and yokes.
L *
Inspect
The bearings and yokes. Replace parts as
necessary.
+ + Install or Connect
• Lubricate the new bearings with a high melting
point type wheel bearing grease.
1. Bearing in a yoke ear.
2. Trunnion in the bearing.
3. Another bearing in the opposite yoke ear with the
trunnion aligned.
4. Bearing in each ear of the companion yoke.
• Press the bearings in beyond the iock ring
grooves.
5. Lock ring at each bearing.
• Tap the yoke lightly to seat the bearings
against the lock rings.
LOCKING HUB COMPONENT
REPLACEMENT
AUTOMATIC HUB COMPONENT
REPLACEMENT
Remove or Disconnect (Figure 3)
. Screws (50) and O-ring seals (52).
1
2. Cover (52).
3. Seal (53).
4. Keeper (60).
5. Spring (54).
. Inner race (55).
6
7. Bearing (56).
. Retainer (58).
8
R efer to " A xle S ha ft
FRONT AXLE 4C-5
9. Ring (57) using needle nose plier.
• Pull the remaining components from the
wheel.
10. Retaining ring (77) from the sleeve (67) groove.
• Rotate the drag sleeve (75) until it drops into
engagement with the gear (59).
• Lift and cock the drag sleeve (75) to unlock
the tangs of the brake band (74) from the
" window" of the inner cage (72), then move
the drag sleeve (75) and brake assembly
away.
Important
• NEVER REMOVE THE BRAKE BAND (74) FROM
THE DRAG SLEEVE (75). The spring tension of
the brake band (74) can be changed if the coils
are over expanded and the operation of the hub
could be affected.
11. Ring (73) from the groove in the clutch gear (59).
12. Inner cage (72).
• While removing the inner cage (72) use a
small screw driver to pry the plastic outer
cage (71) away.
13. Outer cage (71).
• Pry the plastic outer cage (71) tabs free from
the groove in the clutch gear (59) and move
the outer cage (71) away.
14. Sleeve (67) from the clutch gear (59).
• Compress the return spring (64) and hold
the assembly in a compressed condition by
using the clamps shown in figure 4.
• Position the assembly with the clamps in
place in a vice and hold both ends of the
sleeve (67).
15. Ring (61).
• While holding the sleeve (67) in the vise,
remove the clamps holding the return spring
(64) and then open the vise and release the
return spring (64).
16. Retainer plate (62).
17. Retainer (63).
18. Stop ring ( ).
68
• Align the ends of the stop ring (
legs of the cam (70) to allow removal.
19. Spring (69).
20. Cam (70) from the gear (
Inspect
• All parts and replace as necessary.
Install or Connect (Figure 3)
. Cam (70) over the flats of the gear (
1
2. Spring (69).
• Compress the spring (69) and slide the large
diameter end against the gear (
) with the
68
).
66
).
66
).
66