Disassembly Of Traction Pump - Toro Groundsmaster 455-D Service Manual

Disassembly of Traction Pump (Fig. 21)
1. End cap
2. Plug
3.
4. O-ring
5. Conical spring
6. Retaining ring
7. Relief valve
8. Charge relief poppet
9. Spring
10. Shim
11. O-ring
12. Charge relief plug
13. Needle bearing
14. End cap gasket
15. Pin
Clean parts by using a clean solvent wash and air
drying. Keep parts free of foreign materials and chemi-
cals. Protect all sealing surfaces and open cavities from
damage and foreign material.
During assembly of the pump, all surfaces which have
relative motion between two parts should be coated with
a film of clean hydraulic oil. This will assure that these
surfaces will be lubricated during start-up.
It is recommended that all gaskets, o-rings and seals be
replaced. Lightly lubricate all o-rings with clean petro-
Repairs
Figure 21
16. Screw
17. Trunnion cover
18. O-ring
19. Trunnion spacer
20. Shim
21. Roller bearing
22. O-ring
23. O-ring
24. Washer
25. Capscrew
26. Pump shaft
27. Ball bearing
28. Retaining ring
29. Lip seal
30. Seal carrier
leum jelly before assembly. All gasket sealing surfaces
must be cleaned before installing new gaskets.
1. Before performing major repairs on the pump, remove
external components as described in previous proce-
dures. These include the Charge Check / High Pressure
Relief Valves and Charge Relief Valve.
2. Remove pin (Item 43) from coupling (Item 41) on
output end of pump shaft. Remove the coupling.
3. Remove four (4) screws (Item 25) which retain end
cap to pump housing.
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30. Seal carrier
31. O-ring
32. Retaining ring
33. Pump housing
34. Lip seal
35. Trunnion cover
36. Swash plate
37. Thrust plate
38. Cylinder block
39. Valve plate
40. Pin
41. Coupling
42. Plug
43. Pin
Groundsmaster
®
455-D