Drive Pinion Assemble

Tools Required

• J 42164  Pinion Gear Holder. See Special Tools and Equipment .
• J 42170  Bearing and Race Installer. See Special Tools and Equipment .
• J 42172  Bearing Race Installer/Spanner Wrench. See Special Tools and Equipment .

Fig 1: Inner Bearing Race, Pinion Housing/Cage & J 42170
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: The spacer is specific for the bearing set and must be used in order to achieve the proper bearing preload. The pinion bearings, spacer and housing/cage must be replaced as a set.
1. Install the inner bearing race into the pinion housing/cage using the J 42172  and a hydraulic press, if required. See Special Tools and Equipment .
Fig 2: Outer Bearing Race, Pinion Housing/Cage & J 42170
Courtesy of GENERAL MOTORS CORP.
2. Install the outer bearing race into the pinion housing/cage using the J 42170  and a hydraulic press, if required. See Special Tools and Equipment .
Fig 3: Pinion Shaft & J 42170
Courtesy of GENERAL MOTORS CORP.
3. Install the bearing onto the pinion shaft using the J 42170  , J 42164  , and a hydraulic press. See Special Tools and Equipment .
Fig 4: Nut, Bearing, Spacer & Pinion Shaft & Housing/Cage
Courtesy of GENERAL MOTORS CORP.
4. Assemble the pinion shaft (5), spacer (3), and bearing (2) into the housing/cage (4).
Fig 5: Bearing, Pinion Shaft & J 42170
Courtesy of GENERAL MOTORS CORP.
5. Press the bearing onto the pinion shaft using J 42170  , J 42164  , and a hydraulic press. See Special Tools and Equipment .
Fig 6: Removing/Installing Pinion Nut Using J 42172
Courtesy of GENERAL MOTORS CORP.
NOTE: Refer to Fastener Notice in Cautions and Notices.
6. Install the nut onto the pinion shaft using a torque wrench, J 42172  , and J 42164  . See Special Tools and Equipment .

   Tighten:  Tighten the nut to 500 N.m (370 lb ft).

7. Using a punch, stake the areas of the nut into the notches in the end of the pinion shaft.
8. Measure the rotating torque of the pinion shaft using the J 42164  . See Special Tools and Equipment . A properly assembled pinion shaft and bearings should have a rotating torque of 1.4-2.8 N.m (12-25 lb in).