Toro Workman 3000 Series Service Manual page 382

6
5
4
3
1 2
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
Relief Valve Service
1. Remove cap (Item 24). Remove o–ring (Item 23) from
cap.
2. Remove adjusting screw (Item 22), spring (Item 21)
and ball (Item 20). NOTE: Count number of turns it takes
to unthread adjusting screw so it can be reinstalled for
the same approximate pressure setting.
3. Inspect ball for burrs or roughness. Inspect relief
valve bore and seat inside gear end housing (Item 17).
Inspect spring for damage. Replace any worn or dam­
aged parts.
Hydraulic System
10
9
8
7
12
27
15
14
13
12
28
25
11
11
4 12 – 15 ft–lb
(16 – 10 Nm)
26
Figure 20
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
4. Clean and dry all parts. Apply clean hydraulic oil to
parts.
5. Install ball (Item 20), spring (Item 21) and adjusting
screw (Item 22).
6. Install new o–ring (Item 23). Apply clean hydraulic oil
to o–ring and install cap (Item 24).
7. Check relief pressure and adjust if necessary after
installing pump in machine (see TEST NO.1 – Pump
Flow and Relief Pressure).
Page 9 – 22
18
17
16
19
20
21
22
23
12
4
24
20. Ball
21. Spring
22. Adjusting screw
23. Copper gasket
24. Relief valve cap
25. Idler shaft
26. Seal
27. Bearing
28. Ball Key
Workman 3000/4000 Series
9.5 – 12.5 ft–lb
(13 – 17 Nm)