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Chevrolet Silverado / GMC Sierra. Manual - part 1377
Fig. 199: Using J 36601-3 & J 29763 To Measure Lowest Point In Differential Side
Bearing Bore
Courtesy of GENERAL MOTORS CORP.
13. Install the adjustment screw and the lock nut of theJ 29763 (2) to the J 36601-4 or the J
36601-3. See Special Tools.
14. Install the J 29763 to the adjustment screw and lock nut assembly. See Special Tools.
Tighten the lock nut to hold the J 29763 in place. See Special Tools.
IMPORTANT: The left side differential bearing adjuster assembly on the
9.25 inch axle must be removed prior to placing the J 36601-3
in the differential side bearing bore.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
15. Place the contact pad of the J 36601-4 or to the J 36601-3 into the differential side bearing
bore.
16. Adjust the J 29763 to the differential bearing bore by doing the following:. See Special
Tools.
1. Loosen the lock nut on the J 29763 . See Special Tools.
2. Place the contact pad of the J 36601-4 or the J 36601-3 onto the differential side
bearing bore.
3. With the contact pad of the J 36601-4 or the J 36601-3 touching the differential side
bearing bore, push down on the J 29763 until the needle of the J 29763 has turned 3/4
of a turn clockwise. See Special Tools.
4. Tighten the lock nut of the J 29763 . See Special Tools.
17. Rotate the J 36601-4 or the J 36601-3 (1) back and forth until the needle of the J 29763 (2)
indicates the lowest point in the differential side bearing bore. See Special Tools.
18. At the lowest point of deflection, move the housing of the J 29763 until the needle indicates
ZERO. See Special Tools.
19. Move the J 36601-4 or the J 36601-3 back and forth again to verify the zero setting. Adjust
the housing of the J 29763 as necessary to set the needle to ZERO. See Special Tools.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 200: Using J 36601-3 & J 29763 To Measure Thickness Of Shim Needed In
Order To Set Depth Of Pinion
Courtesy of GENERAL MOTORS CORP.
20. After the ZERO setting is obtained and verified, grasp the J 36601-4 or the J 36601-3 (1)
by the flats and move the J 36601-4 or the J 36601-3 out of the differential side bearing
bore.
21. The value indicated on the J 29763 (2) is the thickness of the shim needed in order to set the
depth of the pinion. See Special Tools.
22. Select the shim that indicates the correct thickness. Measure the shim with a micrometer in
order to verify that the thickness is correct.
IMPORTANT: The unit of measurement for the J 29763 is in hundredths of a
millimeter. See Special Tools.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
23. Remove the pinion depth setting tools.
24. Remove the pinion bearings.
25. Install the pinion shim between the drive pinion and the inner pinion bearing and assemble
the differential carrier. Refer to Differential Carrier Assembly Assemble (8.25 Inch
Axle Lock Ring Style) or Differential Carrier Assembly Assemble (9.25 Inch Axle).
Differential pinion gear shims are available in the following sizes:
Shim Sizes
8.25 Inch Axle
9.25 Inch Axle
0.508 mm (0.020 in)
0.5131 mm (0.0202 in)
0.533 mm (0.021 in)
0.5395 mm (0.0212 in)
0.559 mm (0.022 in)
0.5639 mm (0.0222 in)
0.584 mm (0.023 in)
0.5893 mm (0.0232 in)
0.610 mm (0.024 in)
0.6147 mm (0.0242 in)
0.635 mm (0.025 in)
0.6401 mm (0.0252 in)
0.660 mm (0.026 in)
0.6655 mm (0.0262 in)
0.686 mm (0.027 in)
0.6909 mm (0.0272 in)
0.711 mm (0.028 in)
0.7163 mm (0.0282 in)
0.737 mm (0.029 in)
0.7417 mm (0.0292 in)
0.762 mm (0.030 in)
0.7671 mm (0.0302 in)
0.787 mm (0.031 in)
0.7925 mm (0.0312 in)
0.813 mm (0.032 in)
0.8179 mm (0.0322 in)
0.838 mm (0.033 in)
0.8433 mm (0.0332 in)
0.864 mm (0.034 in)
0.8687 mm (0.0342 in)
0.889 mm (0.035 in)
0.8941 mm (0.0352 in)
0.914 mm (0.036 in)
0.9195 mm (0.0362 in)
0.940 mm (0.037 in)
0.9449 mm (0.0372 in)
0.965 mm (0.038 in)
-
0.991 mm (0.039 in)
-
1.016 mm (0.040 in)
-
1.041 mm (0.041 in)
-
1.067 mm (0.042 in)
-
1.092 mm (0.043 in)
-
1.118 mm (0.044 in)
-
1.143 mm (0.045 in)
-
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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