Hummer H1 Service Manual page 553

9-16 Axles, Suspension, and Frame
incorrect, add or subtract shim gaskets and recheck end
play.
8. Install driven gear and bearing spacer in geared hub
(Figure 9-33).
STEERING ARM COVER
GAP
DRIVEN GEAR
SPINDLE
OUTER SPINDLE
BEARING
Figure 9-33: Geared Hub Driven Gear Installation
9. Install outer bearing spacer on spindle.
10. Lower geared hub onto spindle and align splines on driven
gear with splines on spindle. Ensure outer spindle bearing
seats in bearing cup.
11. Install 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.
12. Tighten clampnut lock screw three to five turns into clamp
nut.
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.
4-1-00
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13. Apply a thin coat of grease to boss (protruding side) of
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 SOCKET
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
CLAMPNUT
screw and apply fresh Loctite 272 to old screw threads prior to
reinstallation. Use a hexagonhead socket with a calibrated
CLAMPNUT
torque wrench to tighten and check torque of screw.
LOCK SCREW
14. Tighten clampnut lock screw until all clampnut wobble is
KEYED
WASHER
INNER 15. Using clampnut socket J–42545, tighten clamp nut to 40
BEARING
BEARING
SPACER
16. Loosen and retighten clampnut to 25 lb-ft (34 N•m).
NOTE: Ensure clampnut does not move while clampnut lock
screw is being tightened.
17. Using a hexagon-head socket and pre-set calibrated torque
18. Mark a temporary line across end of spindle and clampnut.
GEARED HUB
NOTE: Using a feeler gauge, ensure a gap exists between
clampnut gap surfaces. If no gap exists, remove and discard
OUTER
BEARING clampnut lock screw and clampnut. Acquire new screw and nut
SPACER
and repeat steps 12-18.
19. Using preset torque wrench, apply pressure to clamp nut in
NOTE: Clampnut should not move. To verify no movement
occurred, check temporary mark across spindle and clampnut.
If clampnut moves, remove and discard clampnut lock screw
and clampnut. Repeat steps 12-19 with new screw and nut.
20. Paint or scribe a permanent line across end of spindle and
NOTE: Immediately install steering arm cover after applica-
tion of sealer.
21. Clean sealing surfaces on geared hub and steering arm
NOTE: Make sure bolts and holes are free of old Loctite.
22. Apply thread-locking compound to bolts. Secure steering
clampnut and install clampnut on spindle.
removed and clamp nut can still be rotated by hand.
lb-ft (54 N•m). Rotate spindle five revolutions both
clockwise and counterclockwise to seat bearings.
wrench, tighten clampnut lock screw to 90 lb-in. (10
N•m).
a counterclockwise direction until torque wrench clicks,
indicating 90 lb-ft (122 N•m) of loosening torque was
applied to clampnut.
clampnut.
cover. Apply anaerobic sealer to steering arm cover and
secure steering arm cover to geared hub.
arm cover to geared hub with four washers and bolts.
Tighten bolts to 65 lb-ft (88 N•m).
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