Propeller Shaft Diagnosis (Drive Gear Pinion Yoke Runout)

^ Tools Required
- J 8001 Dial Indicator Set
- J 35819 Runout Gage
- J 35819-100 Runout Gage Adapter Sleeves

1. Raise the vehicle on a twin post hoist. Suitably support the vehicle.
Ensure that the following conditions are met:
^ The vehicle is supported on the rear axle housing
^ The rear wheels can rotate freely.

2. Remove the propeller shaft.
3. Use the J 8001, the J 35819 and the J 35819-100 in order to measure the pinion gear yoke runout.
Record the runout.
Mark the high point and the low point of the pinion gear yoke.

4. If the pinion gear yoke runout is 0.15 mm (0.006 inch) or less, remove the pinion gear yoke balance weight, if the pinion gear yoke balance weight is used.
No further action is required.

5. No further action is required if the following circumstances exist:
^ The pinion gear yoke runout is between 0.15-0.28 mm (0.006-0.011 inch)
^ The balance weight is near or at the low point of pinion gear runout
If the balance weight is not near or at the low point of pinion gear runout, remove the weight.

6. No further action is required if the following circumstances exist:
^ The pinion gear yoke runout is between 0.28 - 0.38 mm (0.01 - 0.015 inch)
^ The balance weight is near or at the low point of pinion gear runout

7. If the balance weight is not at or near the low point of the pinion gear runout, complete the following steps:
7.1. Remove the weight.
7.2. Rotate the pinion gear yoke until the runout is 0.25 mm (0.010 inch) or less.

8. If a runout of 0.25 mm.(0.010 inch) or less cannot be attained, complete the following steps:
8.1. Install a new differential pinion gear yoke.

IMPORTANT: Service replacement differential pinion gear yokes may be equipped with balance weights. Do not remove these weights.

8.2. Inspect again in order to determine if the runout is 0.25 mm (0.010 inch) or less.

9. Install the propeller shaft.
10. Lower the vehicle.