Envoy 2WD V8-5.3L (2007)
Pinion Flange: Service and Repair
Drive Pinion Flange/Yoke and/or Oil Seal Replacement
Tools Required
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J 8614-01 Flange and Pulley Holding Tool
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J 33782 Pinion Oil Seal Installer
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J 38694 Extension Housing Oil Pump/Seal Installer
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 drive axle. Refer to Rear Axle Lubricant Replacement (9.5 LD Inch Axle).
3. Remove the tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation.
4. Remove the rear brake calipers. Refer to Rear Brake Caliper Replacement.
5. Remove the brake rotors. Refer to Rear Brake Rotor Replacement.
6. Remove the propeller shaft. Refer to Rear Propeller Shaft Replacement.
7. Measure the amount of torque required to rotate the pinion. 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 oil seal
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The differential case bearings
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The axle bearings
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The axle seals
8. Place an alignment mark between the pinion and the pinion yoke.
