Service Manual

Pump Repair
27
1
2
3
4
5
6
7
8
9
10
16
17
18
19
20
21
22
23
24
25
26
11
12
13
14
15
12
11
4
4
12
28
12 – 15 ft–lb
(16 – 10 Nm)
9.5 – 12.5 ft–lb
(13 – 17 Nm)
Figure 19
1. Retaining ring 11. Gear 20. Ball
2. Oil seal 12. Bearing 21. Spring
3. Spacer 13. Pressure plate 22. Adjusting screw
4. Crescent ring 14. Back–up seal 23. Copper gasket
5. Square key 15. Pressure plate seal 24. Relief valve cap
6. Driveshaft 16. Dowel pin 25. Idler shaft
7. Shear pin 17. Gear end housing 26. Seal
8. Stator 18. Socket head capscrew 27. Bearing
9. Seal plate 19. Plug 28. Ball Key
10. Wear plate
Before disassembling pump, plug ports, wash exterior 4. Clean seal bore and shaft on pump so it is free of any
with cleaning solvent and dry thoroughly. foreign material.
Shaft Seal Replacement 5. Install spacer (Item 3) on driveshaft.
1. Remove retaining ring (Item 1). 6.
Put a seal protector tool on driveshaft or apply thin
plastic or tape on shaft to protect seal from damage.
2. Punch two (2) holes in face of seal, 180� apart, and
install metal screws. Remove seal by grasping and pull-
7. Apply grease or petroleum jelly to inside diameter of
ing on screws.
new seal.
IMPORTANT: Do not try to pry seal out of housing.
8. Use
a seal installation tool to install new seal (Item 2).
This can damage the shaft seal bore so oil will leak
Make sure seal is installed square with seal bore.
past the seal.
9. Install retaining ring (Item 1).
3. Remove and discard seal (Item 2). Remove spacer
(Item 3).
Workman 3000/4000 Series Page 9
– 21 Hydraulic System
Hydraulic
System)