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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> Drivelines & Axles >> Driveshaft & Universal Joints >> Differential & Driveline >> Rear Axle, G648 >> Adjustments >> Side Bearing Preload Adjustment >> Notes

Side Bearing Preload Adjustment: Notes

NOTE: Select the pinion shim before performing this procedure.
Fig 1: Dial Indicator On Housing Side Of Differential
GC0095082Courtesy of CHRYSLER LLC
  1. Clean the differential bearing cup bore in the axle housing.
  2. Install Dummy Bearing 10149-3 in the axle housing.
  3. Clean the differential bearing cup bore in the axle housing cover.
  4. Install Dummy Bearing 10149-4 in the axle housing cover.
  5. Install the differential into the axle housing.
  6. Install the axle housing cover and tighten the bolts to 10 Nm (7 ft. lbs.).
  7. Set up the dial indicator (1) to measure endplay on the housing side of the differential (2).
  8. From the housing side of the differential, press the differential toward the case cover, then zero the dial indicator (1).
  9. From the case cover side, press the differential toward the housing side, and record the measurement.
  10. Add 1.33 mm (0.052 in.) to the empty case measurement taken in the previous step and record the results. This is the total dimension of both differential shims when installed.
  11. Remove the dial indicator.
  12. Remove the axle housing cover.
  13. Fully install the pinion.
  14. Install the Dummy Bearing 10149-3 in the axle housing, then install the differential carrier into the axle housing.
  15. Install Dummy Bearing 10149-4 in the axle housing cover, and install the axle housing cover. Tighten the bolts to 10 Nm (7 ft. lbs.).
  16. Set up the dial indicator (1) as before.
  17. From the housing side of the differential, press the differential toward the case cover, then zero the dial indicator (1).
  18. From the case cover side, press the differential toward the housing side, and record the measurement.
  19. Subtract 0.27 mm (0.01 in.) from the measurement found in the previous step. This is the size of the shim that should be installed in the housing cover.
  20. Subtract the size of the selected housing cover shim from the measurement found in step  11. This is the size of the shim that should be installed in the housing.
  21. Check ring gear backlash. Final ring gear backlash should be 0.21 mm +/- 0.13 mm (0.008 in. +/- 0.005 in.).
    Fig 2: Backlash Shim Correction
    GC0081483Courtesy of CHRYSLER LLC
  22. If backlash measurement is less than 0.08 mm (0.003 in.), it is necessary to decrease the shim thickness on the ring gear (left) side, and increase the thickness on the pinion (right) side.
  23. If backlash measurement is greater than 0.34 mm (0.013 in.), it is necessary to increase the shim thickness on the ring gear (right) side, and decrease the thickness on the pinion (left) side.
  24. Check the gear contact pattern, and adjust as necessary. Refer to GEAR CONTACT PATTERN .
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