Tools Required

The pinion flange runout compensation weight will be located on the face of the pinion flange dust slinger.

1. Place the vehicle on a suitable hoist. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the propeller shaft from the pinion flange.



3. Install the J 35819 Flange Runout Gage.

Important: 

•	All runout measurements provided are to be used as guidelines. The measurements provided and their effect on vibration correction may vary for each vehicle.

•	The dial indicator will have inverted readings. You are measuring the inside diameter of the flange; you are not measuring the outside diameter. The highest reading on the dial indicator is the low spot. The lowest reading is the high spot.

4. Rotate the pinion shaft 360 degrees and zero the dial indicator on the low spot.
5. Rotate the pinion flange again and record the total runout.
6. If the pinion flange runout is 0.15 mm (0.006 in) or less, remove the runout compensation weight. Refer to Pinion Flange Runout Measurement .
7. If the pinion flange runout is greater than 0.15 mm (0.006 in) but less than 0.28 mm (0.011 in), and the runout compensation weight is at or near the low spot, no further action is necessary. If the runout compensation weight is not at or near the low spot, remove the runout compensation weight. Refer to Pinion Flange Runout Measurement .
8. If the pinion flange runout is greater than 0.28 mm (0.011 in) but not greater than 0.38 mm (0.015 in), and the runout compensation weight is at or near the low spot, no further action is necessary. If the runout compensation weight is not at or near the low spot, remove the runout compensation weight and re-index the pinion flange until the runout is 0.25 mm (0.010 in) or less. Refer to Pinion Flange Runout Measurement .
9. If after removing the runout compensation weight or reindexing the pinion flange, it is not possible to achieve runout of 0.25 mm (0.010 in) or less, replace the pinion flange. Refer to Drive Pinion Flange/Yoke and/or Oil Seal Replacement in Rear Drive Axle.
10. Remeasure the pinion flange runout after a new pinion flange has been installed.

Tools Required

System balanced pinion flange assemblies have a U-shaped deflector designed to hold a system balance weight on the outside diameter.

1. Place the vehicle on a suitable hoist. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the propeller shaft from the pinion flange.



3. Install the J 35819 Flange Runout Gage

Important: 

•	All runout measurements provided are to be used as guidelines. The measurements provided and their effect on vibration correction may vary for each vehicle.

•	The dial indicator will have inverted readings. You are measuring the inside diameter of the flange; you are not measuring the outside diameter. The highest reading on the dial indicator is the low spot. The lowest reading is the high spot.

4. Rotate the pinion shaft 360 degrees and zero the dial indicator on the low spot.
5. Rotate the pinion flange again and record the total runout.
6. An acceptable balanced flange will have a measured runout between 0.00-0.38 mm (0.00-0.015 in). If a balanced flange has more than 0.38 mm (0.015 in) runout, replace the flange or reindex the flange 180 degrees on the pinion.
7. Remeasure the pinion flange runout after the pinion flange has been reindexed.
8. If the runout is still unacceptable after the pinion flange has been reindexed, replace the pinion flange. Refer to Drive Pinion Flange/Yoke and/or Oil Seal Replacement in Rear Drive Axle.
9. Measure the runout of the propeller shaft and inspect the tolerance.
10. If the tolerance is excessive, mark the position of the shaft for future reference and rotate the shaft 180 degrees.
11. Reinstall the shaft and reinspect the runout.

Important: If you replace or reindex a balanced flange, you must system balance the rear axle again.

12. If the tolerance is still excessive, replace the pinion flange. Refer to Drive Pinion Flange/Yoke and/or Oil Seal Replacement in Rear Drive Axle.