Pump Unit
90-8M0050731 MAY 2011 Page 5A-37
14. Press a new bearing onto the gear using an appropriate size mandrel.
a - Bearing
b - Mandrel
15. If replacing the bearing, remove the outer race from the front cover using a slide hammer and puller jaws. Press the new outer
race into the cover using a suitable mandrel.
Slide Hammer 91‑34569A 1
Shimming Procedures and Assembly
Pinion Shaft Shimming Procedure
NOTE: Pinion gear shimming and backlash procedures must be performed when any of the following components have been
replaced:
• Jet drive housing
• Pinion gear
• Pinion gear bearing assembly
• Pinion shaft housing
• Impeller gear
• Impeller gear bearing assembly
• Impeller shaft front cover
1. Install the original shims onto the pinion shaft housing. Install the O‑ring on the pinion shaft housing.
NOTE: If the original shims are not available, start with 0.76 mm (0.030 in.) shims.
2. Lubricate the pinion shaft housing O‑ring with 2‑4‑C with Teflon. Install the O‑ring on the housing.
3. Install the pinion shaft assembly into the drive housing bore.
4. Apply Loctite 271 Threadlocker to the screw threads. Tighten the screws to the specified torque.
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