Depth Gauge Check

FIG. 48 Depth Gauge Tool Selection:

1. Refer to Fig. 48 for the correct tools for the particular axles.

NOTE: If any of the gauge surfaces become nicked, the high spots must be removed with a medium India oilstone to ensure no erroneous readings.

FIG. 51 Pinion inner and Outer Cup Installation:

2. Install inner and outer pinion cups with Forcing Screw T75T-1176-A and Pinion Bearing Cup Replacers, T8OT-4000-D, (inner cup) and T8OT- 4000-E (outer cup) or equivalents (Fig. 51).

3. Place a new rear pinion bearing over the proper aligning adapter and insert into the pinion bearing retainer assembly. Place the front pinion bearing (new or used if in good condition) into the bearing cup in the carrier and assemble the handle onto the screw and hand tighten. Note the 3/8 inch square drive in the handle to be used for obtaining the proper pinion bearing preload.

4. Center the proper gauge tube into the differential bearing bore. install the bearing caps and tighten to proper specifications. To preload the bearing, tighten the handle to 2.3-4.5 Nm (20-40 in-lbs).

5. Using a feeler gauge tool or shims, select the thickest feeler shim that will enter between the gauge tube and the gauge block. Insert the feeler gauge or shims directly along the gauge block to insure a correct reading. The feeler gauge fit between the gauge tube and the gauge block should be a slight drag-type feeling.

6. After the correct shims or feeler gauge feel is obtained, check the reading and this is the thickness of shim(s) required providing that upon inspection of the service pinion gear, the button is etched "0".

NOTE: If the service pinion gear is marked with a plus (+) reading, this amount must be subtracted from the thickness dimension obtained in step 5 (Example: +2 (-0.002)).

NOTE: If the service pinion gear is marked with a minus (-) reading, this amount must be added to the thickness dimension obtained in step 5 (Example: -2 (+0.002)).

In addition you must use the exact same new rear pinion bearing that was used in the previous steps.

FIG. 49 Baffle and Oil Slinger Positions:

FIG. 50 Drive Pinion Bearing Installation:

7. Measure shims with a micrometer to verify the shim size. Place the oil slinger (if used) (Fig. 49) on the pinion and press on the bearing. Use T53T- 4621-B, Pinion Bearing Cone Replacer for Model 44 Axles and T75L-1 165-B, Axle Bearing/Seal Plate (or equivalent tools) as shown in Fig. 50.

NOTE: If a baffle and/or slinger is used, replace with a new one upon assembly and measure as part of the shim stack.

8. After following these procedures, continue to build the remaining components with proper pinion and differential bearing preload torques and ring gear backlash.