Backlash Inspection and Adjustment: Notes

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Tools Required

J 42213 Adjuster Sleeve Socket. See Special Tools and Equipment .
J 45224 Side Bearing Adjuster. See Special Tools and Equipment .
J 8001 Dial Indicator Set

Fig 1: Installing Left Side Differential Bearing Adjuster

Courtesy of GENERAL MOTORS CORP.

Install the J 45224 to the right differential adjuster. See Special Tools and Equipment .
Slowly turn the J 45224 clockwise until the right differential adjuster contacts the differential case bearing. See Special Tools and Equipment .
Install the J 42213 to the left differential adjuster. See Special Tools and Equipment .
Slowly turn the J 42213 clockwise until the left differential adjuster contacts the differential case bearing. See Special Tools and Equipment .
Mark the location of the adjusters in relation to the carrier halves.
Ensure that the notches in the differential adjusters can be counted when turned.
Using the J 45224 , turn the right differential adjuster out two notches. See Special Tools and Equipment .
Using the J 42213 , turn the left differential adjuster in one notch. See Special Tools and Equipment .
Rotate the pinion several times in order to seat the bearings.