Hummer H1 (2006+). Manual — part 268
9-50 Axles, Suspension and Frame
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Figure 9-83: Input Seal Removal
Inspection
NOTE: Clean all the components, examine for wear or damage and replace if necessary. The drive and the driven gears must be
replaced as matched set (Figure 9-84).
1.
Inspect the splines and the gear teeth on the drive gear and the driven gear for damage.
2.
Inspect the spindle for damage and rough or corroded sealing surface.
3.
Inspect all the bearings and the bearing races for damage.
4.
Inspect the steering arm cover for damage.
5.
Inspect the geared hub and all the threaded holes for damage. Repair any damaged holes using thread repair inserts.
Figure 9-84: Geared Hub Component Appearance
DRIVE GEAR RETAINER
INPUT SEAL
DRIVE GEAR
DRIVEN
BEARING
SPINDLE
SEALING
STEERING ARM COVER
GEARED HUB
SURFACE
BEARING RACE
GEAR
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Axles, Suspension and Frame 9-51
Assembly
1.
Place the new output seal on the installer DT-47846 with the seam in the perimeter facing the geared hub and drive the seal in
until the seal bottoms out on the geared hub surface. The seal will be bottomed out in the recess of the geared hub. (Figure
9-85).
Figure 9-85: Spindle Seal Installation
2.
Using driver handle J–8092 and input seal installer DT-47845, install the input seal in the drive gear retainer. Place the new
primary seal on the installer with the open side of the seal facing toward the drive gear retainer. Drive the seal in until the
installer bottoms against the drive gear retainer. The seal will be recessed in the drive gear retainer approximately 0.200". This
dimension is critical and must be achieved using the special tool (Figure 9-86).
Figure 9-86: Input Seal Installation
3.
Install the retaining washer in the shallow end of the drive gear (Figure 9-87).
DRIVER
SPINDLE
SPINDLE SEAL
GEARED HUB
SEAL INSTALLER
HANDLE
DT-47846
J–8092
DRIVER HANDLE
INPUT SEAL
DRIVE GEAR
RETAINER
INSTALLER
J–8092
DT-47845
9-52 Axles, Suspension and Frame
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Figure 9-87: Retaining Washer Location
4.
Install the drive gear and the inboard bearing cup in the geared hub.
5.
Apply thread-locking compound on the bolts. Secure the shim gasket and the drive gear retainer to the geared hub with the
four washers and the bolts. Tighten the bolts to 25-35 lb-ft. (40-48 N•m).
6.
Mount the dial indicator on the geared hub and index the indicator to register on the end of the drive gear (Figure 9-88).
Figure 9-88: Dial Indicator Positioning
7.
Move the drive gear up and down to read the end play. End play should be 0.001-0.006 in. (0.03-0.15 mm). If end play is
incorrect, add or subtract the shim gaskets and recheck the end play.
8.
Install the driven gear and the bearing spacer in the geared hub (Figure 9-89).
DRIVE GEAR RETAINER
SHIM GASKET
INBOARD
DRIVE GEAR
RETAINING
GEARED HUB
BEARING CUP
WASHER
DIAL INDICATOR
GEARED HUB
DRIVE GEAR
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Axles, Suspension and Frame 9-53
Figure 9-89: Geared Hub Driven Gear Installation
9.
Install the outer bearing spacer on the spindle.
10. Lower the geared hub onto the spindle and align the splines on the driven gear with the splines on the spindle. Ensure the outer
spindle bearing seats in the bearing cup.
11. Install the inner bearing and keyed washer on the spindle.
NOTE: After the clamp nut lock screw is installed into the clamp nut, the clamp nut must be completely installed on the spindle
within a ten minute limit.
12. Tighten the clamp nut lock screw three to five turns into the clamp nut.
CAUTION: Ensure the clamp nut is installed on the spindle with boss (protruding side) facing inward toward the bearing and the
large chamfer side with engraved part number facing away from the bearing.
13. Apply a thin coat of grease to the boss (protruding side) of clamp nut and install the clamp nut on the spindle.
NOTE: If an excessive amount of torque 18-26 lb-in. (2-3 N•m) is required to tighten the clamp nut lock screw to remove clamp
nut wobble, remove the screw. Ensure the threads of the clamp nut are clean and free of Loctite. Replace the screw with a new one
or remove all the previously applied Loctite from the threads of the old screw and apply fresh Loctite 272 to the old screw threads
prior to reinstallation. Use a hexagon head socket with a calibrated torque wrench J-42546 to tighten and check the torque of the
screw.
14. Tighten the clamp nut lock screw until all the clamp nut wobble is removed and the clamp nut can still be rotated by hand.
STEERING ARM COVER
CLAMP NUT
LOCK SCREW
KEYED
INNER
BEARING
GEARED HUB
OUTER
BEARING
SPACER
SPINDLE
DRIVEN GEAR
SPACER
BEARING
WASHER
CLAMP NUT SOCKET
OUTER SPINDLE
BEARING
GAP
CLAMP NUT
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