Yukon 2WD V8-5.3L (2007)
Seals and Gaskets: Service and Repair
Drive Pinion Flange/Yoke and/or Oil Seal Replacement
Drive Pinion Flange/Yoke and/or Oil Seal Replacement
Tools Required
^
J 8614-01 Flange and Pulley Holding Tool
^
J 22388 Pinion Oil Seal Installer - Rear
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 and support the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Drain the drive axle. Refer to Rear Axle Lubricant Replacement.
3. Remove the tires and wheels (8.6 inch, 9.5 inch axle).
4. Remove the rear brake calipers (8.6 inch, 9.5 inch axle).
5. Remove the brake rotors (8.6 inch, 9.5 inch axle).
6. Reference mark the rear propeller shaft (3) to the rear axle pinion yoke (4).
7. 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.
8. 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:
^
The pinion bearings
^
The pinion oil seal
^
The differential case bearings
^
The axle bearing (8.6 inch, 9.5 inch axles)
