Sierra 1500 4WD V8-4.8L VIN V (2004)
Pinion Gear: Service and Repair
Drive Pinion Housing and/or Seal Replacement
Drive Pinion Housing and/or Seal Replacement
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Tools Required
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J 44414 Pinion Seal Installer
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J 22912-01 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
1. Raise the vehicle. Refer to Vehicle Lifting.
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.
2. Drain the axle lubricant.
3. Remove the axle shafts.
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
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The differential case bearings
