GMC 1990 Light Truck Repair Manual page 334

4C5-18 L-VAN FRONT AXLE
Figure 42— Installing Tri-pot to Housing
2. Larger seal retaining clamp (9) from tri-pot joint,
using chisel and discard.
Important
• Do not cut through seal (11) and damage seal­
ing surface of tri-pot outer housing (1) with
chisel.
3. Small seal-retaining clamp (12) from axle shaft
(13) with side cutter and discard.
4. Seal (11) from tri-pot housing by separating (1) at
large diameter and sliding seal away from joint
along axle shaft (13).
5. Tri-pot housing (1) from spider (3) and shaft (13).
6. Spread spacer ring (8) with J 8059 and slide spac­
er ring and tri-pot spider (3) back on axle shaft
(13) as shown.
7. Shaft retaining ring (2) from groove on axle shaft
(13) and slide spider assembly off of shaft.
Inspect
Tri-pot balls (6) and needle rollers (7) for dam­
age and wear.
V Important
• Handle the tri-pot spider assembly with care.
Tri-pot balls and needle rollers may separate
from spider trunnions.
8. Remove spacer ring (8) and seal (11) from axle
shaft (13).
9. Flush grease from tri-pot housing (1).
Inspect
Joint seal
Spider
Housing
Tri-pot balls
Needle roller
0
For damage or wear
Install or Connect
1. Small seal-retaining clamp (12) on neck of seal
(11). Do not crimp.
2. Slide seal (11) onto shaft (13) and position neck of
seal in seal groove on axle shaft (13).
Crimp seal retaining clamp (12) with J 35910 to
3.
136 N-m (100 ft. lbs.) as shown (Figure 35).
4. Spacer ring (8) on axle shaft (13) and beyond 2nd
groove as shown.
5. Slide tri-pot spider assembly against spacer ring
(8) on shaft (13).
Important
• Be sure that counterbore face of tri-pot spider
(3) faces end of shaft (13).
6 . Install shaft retaining ring (2) in groove of axle
shaft (13) with J 8059.
7. Slide tri-pot spider (3) towards end of shaft (13)
and reseat spacer ring (8) in groove on shaft.
8
Place approximately half of grease provided in
.
seal (11) and use remainder to repack tri-pot hous­
ing (1).
Position larger clamp (9) on seal (11).
9.
10
Slide tri-pot housing (1) over tri-pot spider assem­
.
bly on shaft (13).
11. Slide large diameter of seal (11), with larger clamp
(9) in place, over outside of tri-pot housing (1) and
locate lip of seal in housing groove.
12
Position the tri-pot assembly at the proper vehicle
.
dimension as shown in Figure 43.
Important
• Seal (11) must not be dimpled, stretched or out
of shape in any way. If seal is not shaped cor­
rectly, carefully insert a thin, flat, blunt tool (no
sharp edges) between large seal opening and
housing (1) to equalize pressure. Shape seal
properly by hand and remove tool.
13. Crimp seal retaining clamp (9) with J 35910 to 176
N-m (130 ft. lbs.) (Figure 35).
Important
Make sure that seal (11), housing (1) and large
clamp (9) all remain in alignment while crimp­
ing.