Pinion Depth Measurement And Adjustment

Measurements are taken with pinion cups and pinion bearings installed in housing. Take measurements with a Pinion Gauge Set, Pinion Block 8177, Arbor Discs 8541 and Dial Indicator C-3339 (Fig 1 ).

Fig 1: Identifying Pinion Gear Depth Gauge

Courtesy of DAIMLERCHRYSLER CORP.

1. Assemble Pinion Height Block 6739, Pinion Block 8177 and rear pinion bearing onto Screw 6741 (Fig 1 ).
2. Insert assembled height gauge components, rear bearing and screw into the housing through the pinion bearing cups (Fig 2 ).
3. Install front pinion bearing and Cone 6740 onto the screw hand tight (Fig 1 ).
   Fig 2: Identifying Pinion Height Block

   Courtesy of DAIMLERCHRYSLER CORP.
4. Place Arbor Discs 8541 on Arbor D-115-3 in position in the housing side bearing cradles (Fig 3 ). Install differential bearing caps on arbor discs and tighten cap bolts to specification.
5. Assemble Dial Indicator C-3339 into Scooter Block D-115-2 and secure set screw.
   Fig 3: Identifying Gauge Setup In Housing

   Courtesy of DAIMLERCHRYSLER CORP.
6. Place Scooter Block/Dial Indicator in position in the housing so dial probe and scooter block are flush against the surface of the pinion height block. Hold scooter block in place and zero the dial indicator. Tighten dial indicator face lock screw.
7. Slide the dial indicator probe across the gap between the pinion height block and the arbor bar with the scooter block against the pinion height block (Figure ). Slide the dial probe to the crest of the arbor bar and record the highest reading.
8. Select a shim equal to the dial indicator reading plus the drive pinion gear depth variance number marked on the shaft of the pinion gear using the opposite sign on the variance number. For example, if the depth variance is -2, add +0.002 in. to the dial indicator reading.
9. Remove the pinion depth gauge components from the housing