Avalanche 1500 2WD V8-5.3L (2008)
Seals and Gaskets: Service and Repair
Drive Pinion Housing and/or Seal Replacement
Drive Pinion Housing and/or Seal Replacement
Tools Required
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J 44414 Pinion Seal Installer
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J 22912-B Bearing Puller
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J 24433 Pinion Cone and Side Bearing Installer
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J 37624 Pinion Bearing Installer
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J 8092 Driver Handle
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J 8608 Rear Pinion Bearing Race Installer
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J 8614-01 Flange/Pulley Holding Tool
Removal Procedure
Important: Observe and mark the positions of all the driveline components, relative to the propeller shaft and the axles, prior to
disassembly. These components include the propeller shafts, drive axles, pinion flanges, output shafts, etc. Reassemble all the components
in the exact places in which you removed the parts. Follow any specifications, torque values, and any measurements made prior to
disassembly.
1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Drain the axle lubricant. Refer to Rear Axle Lubricant Replacement (8.0/8.6 Inch Axle) (See: Fluid - Differential/Service and Repair/Removal
and Replacement/Rear Axle Lubricant Replacement (8.0/8.6 Inch Axle))Rear Axle Lubricant Replacement (10.5 Inch Axle) (See: Fluid -
Differential/Service and Repair/Removal and Replacement/Rear Axle Lubricant Replacement (10.5 Inch Axle)) .
3. Remove the axle shafts. Refer to Rear Axle Shaft and/or Gasket Replacement (See: Drive Axles, Bearings and Joints/Seals and Gaskets/Service
and Repair/Rear Axle Shaft and/or Gasket Replacement) .
4. Reference mark the rear propeller shaft (3) to the rear axle pinion yoke (4).
5. Disconnect the propeller shaft from the axle.
Wrap the bearing caps with tape in order to prevent the loss of bearing rollers.
Support the propeller shaft as necessary.
6. Measure the amount of torque required to rotate the pinion and the ring gear. Use an inch-pound torque wrench. Record this measurement for
reassembly. This will give the combined preload for the following components:
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The pinion bearings
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The pinion pilot bearing
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The pinion oil seal
