Pump Repair - Toro Workman 3000 Series Service Manual

Pump Repair

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