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Hummer H1 (2002+). Manual - part 139

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Axles, Suspension, and Frame 9-17

05745159

23. Clean sealing surfaces on geared hub and side cover.

Apply anaerobic sealer to side cover and install on geared
hub (Figure 9-34).

Figure 9-34: Geared Hub Side Cover Removal

NOTE:

Make sure bolts and holes are free of old Loctite.

24. Apply thread-locking compound to bolts. Secure side

cover to geared hub with eight washers and bolts. Tighten
bolts to 8-13 lb-ft (11-18 N•m).

25. Install geared hub.

GEARED HUB SPINDLE SEAL REPLACEMENT

Removal

Remove wheel.

Remove drainplug from geared hub and drain geared hub
oil. Install drainplug in geared hub. Tighten drainplug to
8-13 lb-ft (11-18 N•m) (Figure 9-35).

Figure 9-35: Geared Hub Drainplug Removal

Remove four bolts, washers, and steering arm cover from
geared hub (Figure 9-36).

Figure 9-36: Geared Hub Steering Arm

Cover Removal

Remove clampnut lock screw from clampnut
(Figure 9-37).

Figure 9-37: Clamp Nut Removal

Using clampnut socket J–42545, remove clampnut and
keyed washer from spindle.

GEARED HUB

SIDE COVER

GEARED HUB

DRAINPLUG

STEERING ARM COVER

GEARED HUB

OUTER BEARING

SPINDLE

BEARING

INNER

KEYED

CLAMPNUT

LOCK SCREW

SOCKET

WASHER

BEARING

SPACER

J-42545

9-18

Axles, Suspension, and Frame

_________________________________________

Remove spindle, bearing spacer, inner bearing, and outer
bearing spacer from geared hub.

Remove spindle seal from geared hub. Discard spindle
seal (Figure 9-38).

Figure 9-38: Spindle Seal Removal

Cleaning and Inspection

Inspect spindle for rough or corroded sealing surface.
Replace if damaged (Figure 9-37).

Inspect bearings for damage. Replace if damaged.

Installation

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).

Coat seal with lubricating oil.

Install outer bearing spacer and spindle in geared hub
(Figure 9-37).

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.

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.

Apply a thin coat of grease to boss (protruding side) of
clampnut and install clampnut on spindle.

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

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.

Tighten clampnut lock screw until all clampnut wobble is
removed but clampnut can still be rotated by hand.

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.

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.

00-S09-004

DRIVER HANDLE

SPINDLE SEAL

GEARED HUB

INSTALLER

J–8092

J–44906

CLAMPNUT

KEYED WASHER

GEARED HUB

STEERING ARM

CLAMP

COVER

LOCK SCREW

SOCKET

SBAS-07M

GAP

NUT

4-1-00

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Axles, Suspension, and Frame 9-19

05745159

16. Apply thread-locking compound to bolt threads and install

steering arm cover on geared hub with four washers and
bolts. Tighten bolts to 65 lb-ft (88 N•m).

17. Remove fill plug and washer from geared hub

(Figure 9-40).

Figure 9-40: Geared Hub Fill Plug Location

18. Fill geared hub to proper oil level (Section 1).

19. Secure washer and fill plug to geared hub. Tighten fill

plug to 8-13 lb-ft (11-18 N•m).

20. Install wheel.

GEARED HUB SPINDLE BEARING ADJUSTMENT

Adjustment

Remove wheel.

Remove drainplug and drain geared hub oil. Install
drainplug into geared hub. Tighten drainplug to 8-13 lb-ft
(11-18 N•m) (Figure 9-41).

Remove four bolts, washers, and steering arm cover from
geared hub. Push steering arm cover away from geared
hub (Figure 9-43).

Remove clampnut lock screw from clampnut.

Using clampnut socket, remove clampnut and keyed
washer from spindle.

After clampnut lock screw is installed into clampnut,
clampnut must be completely installed on spindle within a
ten minute limit.

Figure 9-41: Geared Hub Drainplug Location

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.

Apply a thin coat of grease to boss (protruding side) of
clamp nut and install clamp nut on spindle.

NOTE:

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 screw. Ensure threads of clampnut
are clean and free of Loctite. Replace 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 a hex socket and torque wrench to tighten
and check screw torque.

Tighten clampnut lock screw until all clampnut wobble is
removed and clampnut can still be rotated by hand.

10. Using clampnut socket SBAS-07M, tighten clampnut to

40 lb-ft (54 N•m). Rotate spindle five revolutions both
clockwise and counterclockwise to seat bearings
(Figure 9-42).

GEARED HUB

FILL PLUG

GEARED HUB

DRAINPLUG

9-20

Axles, Suspension, and Frame

_________________________________________

Figure 9-42: Clampnut Installation

11. Loosen and retighten clampnut to 25 lb-ft (34 N•m).

NOTE:

Ensure clampnut does not move while clampnut lock

screw is being tightened.

12. Using a hexagon-head socket and pre-set calibrated torque

wrench, tighten clampnut lock screw to 90 lb-in. (10
N•m).

13. Mark a temporary line across end of spindle and clampnut.

NOTE:

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 6-12.

14. Using pre-set torque wrench, apply pressure to clampnut

in counterclockwise direction until torque wrench clicks,
indicating 90 lb-ft (122 N•m) of loosening torque was
applied to clampnut.

NOTE:

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 6-13 with new screw and nut.

15. Paint or scribe a permanent line across end of spindle and

clampnut.

NOTE:

Immediately install steering arm cover after applica-

tion of sealant.

16. Clean sealing surfaces on geared hub and steering arm

cover. Apply anaerobic sealant to steering arm cover and
install on geared hub (Figure 9-43).

Figure 9-43: Steering Arm Cover Installation

NOTE:

Thoroughly clean old Loctite before applying fresh

Loctite.

17. Apply thread-locking compound to bolt threads and secure

steering arm cover to geared hub with four washers and
bolts. Tighten bolts to 65 lb-ft (88 N•m).

18. Remove fill plug and washer from geared hub

(Figure 9-40).

19. Fill geared hub to proper oil level (Section 1).

20. Secure washer and fill plug to geared hub. Tighten fill

plug to 8-13 lb-ft (11-18 N•m).

CLAMPNUT

GEARED

KEYED

CLAMPNUT

LOCK SCREW

SOCKET

WASHER

HUB

SBAS-07M

GAP

GEARED HUB

STEERING ARM

COVER

Content .. 137 138 139 140 ..