Hummer H1 Service Manual page 555

9-18 Axles, Suspension, and Frame
6. Remove spindle, bearing spacer, inner bearing, and outer
bearing spacer from geared hub.
7. Remove spindle seal from geared hub. Discard spindle
seal (Figure 9-38).
SPINDLE SEAL
DRIVER HANDLE
J–8092
00-S09-004
INSTALLER
J–44906
Figure 9-38: Spindle Seal Removal
Cleaning and Inspection
1. Inspect spindle for rough or corroded sealing surface.
Replace if damaged (Figure 9-37).
2. Inspect bearings for damage. Replace if damaged.
Installation
1. Place the new output seal on the installer, with the seamed
side of the stainless steel perimeter facing toward the
geared hub and drive the seal in until the installer bottoms
out on the geared hub surface. The seal will be recessed in
the geared hub approximately 0.185". This dimension is
critical and must be achieved using the special tool.
(Figure 9-38).
2. Coat seal with lubricating oil.
3. Install outer bearing spacer and spindle in geared hub
(Figure 9-37).
4. Install bearing spacer, inner bearing, and keyed washer on
spindle.
NOTE: After clampnut lock screw is installed into clampnut,
clampnut must be completely installed on spindle within a ten
minute limit.
5. Tighten clampnut lock screw three to five turns into
clampnut.
CAUTION: Ensure clampnut is installed on spindle with boss
(protruding side) facing inward toward bearing and large
chamfer side with engraved part number facing away from
bearing.
6. Apply a thin coat of grease to boss (protruding side) of
clampnut and install clampnut on spindle.
7. If an excessive amount of torque (18-26 lb-in. (2-3 N•m))
is required to tighten clampnut lock screw to remove
clampnut wobble, remove clampnut lock screw. Ensure
threads of clampnut are clean and free of Loctite. Replace
4-1-00
_________________________________________
GEARED HUB
screw with a new one or remove all previously applied
Loctite from threads of old screw and apply fresh Loctite
272 to old screw threads prior to reinstallation. Use hex
socket and torque wrench to tighten and check screw
torque.
8. Tighten clampnut lock screw until all clampnut wobble is
removed but clampnut can still be rotated by hand.
9. Using clampnut socket J–42545, tighten clampnut to 40
lb-ft (54 N•m) (Figure 9-39). Rotate spindle five
revolutions both clockwise and counterclockwise to seat
bearings.
10. Loosen and retighten clampnut to 25 lb-ft (34 N•m).
NOTE: Ensure clampnut does not move while clampnut lock
screw is being tightened.
11. Tighten clamp nut lock screw to 90 lb-in. (10 N•m).
12. Mark a temporary line across end of spindle and clamp
nut. Then, using a feeler gauge, ensure a gap exists
between clampnut gap surfaces. If no gap exists, remove
and discard clampnut lock screw and clampnut. Acquire
new screw and nut and repeat steps 5-12.
13. Apply 90 lb-ft (122 N•m) of loosening torque to clampnut.
Clampnut should not move. To verify no movement
occurred, check temporary mark across spindle and
clampnut. If clampnut moved, remove and discard
clampnut lock screw and clampnut. Repeat steps 5-13 with
new screw and nut.
CLAMPNUT
KEYED WASHER
LOCK SCREW
GAP
CLAMP
CLAMPNUT
NUT
SOCKET
SBAS-07M
Figure 9-39: Clampnut Installation
14. Paint or scribe a permanent line across end of spindle and
clampnut.
15. Clean sealing surfaces on geared hub and steering arm
cover. Apply Loctite 518 sealant to steering arm cover and
install on geared hub.
®
GEARED HUB
STEERING ARM
COVER