Bearing Cup and Drive Pinion Installation

1. Clean the bore, and if installed, remove the cup. Place the oil baffle first and the required amount of shims in the inner pinion bearing bore and drive the inner pinion bearing cup in place with special Tool T8OT-4000-D, Inner Pinion Bearing Cup Replacer (for Model 44 axles) or T8OT-4000-F (for Model 50 axles) and Forcing Screw T75T-1 176-A (or equivalents). Be careful not to cock the cup.

FIG. 51 Pinion inner and Outer Cup Installation:

2. Place the outer pinion cup into the carrier and drive in place with special Tool T8OT-4000-E or equivalent. For Model 44 and 50 axles Outer Pinion Cup Replacer, install Forcing Screw T75T-1176-A or equivalent and draw the cups into the bore (Fig. 51).

3. Lubricate the ends of outer pinion bearings rollers with Long Life Lubricant, CIAZ-19590-BA (ESAM1 C75-B) or equivalent. Install the outer bearing cone in place in outer bearing cup.

FIG. 50 Drive Pinion Bearing Installation:

4. Install the inner bearing cone and slinger on the pinion. Drive the bearing on the pinion shaft until fully seated using T53T-4621-B (Model 44 axles) and Axle Bearing/Seal Plate, T75L-1165-B or equivalents as shown in Fig. 50.