Inspection
a. Inspect wear plate for scoring and erosion.
b. Inspect gears for wear.
c. Inspect center section for scoring and
scratches.
d. Check all bushings for scoring.
e. If any damage is found to these components,
replace pump assembly. Only seals are avail-
able for pump repair.
Assembly
1. Install seal retainer (3) and seal gland (2), flat side
of seal retainer against wear plate face (4).
2. Install wear plate (4) on rear cover, bronze side
toward gears.
3. Position center section on rear cover wear plate.
4. Install idler and drive gears (6 & 7).
5. Install front wear plate (9), bronze against gears.
Install seal retainer (3) and seal gland (2).
90191
FIGURE 4-2. HYDRAULIC PUMP
1. Rear Cover
2. Seal
3. Seal Retainer
4. Rear Wear Plate
5. Notch
6. Driver Gear
7. Drive Gear
8. Center Section
9. Front Wear Plate
10. Front Cover
11. Plug
12. Shaft Seal
13. Snap Ring
14. Stud
15. Lockwasher
16. Nut
M04002 12/89 Alternator and Wheelmotor Cooling Air Filter System M4-3
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