Piston (Traction) Pump Service - Toro GroundsmasterR 4300-D Service Manual

Piston (Traction) Pump Service

20
31
30
29
22
53
21
54
52
51
50
49
48
1. Traction pump housing
2. Auxiliary shaft
3. Retaining ring
4. Ball bearing
5. Retaining ring
6. Seal
7. Backup washer
8. Bearing
9. O- -ring
10. Trunnion cover
11. Screw (4 used)
12. Plug
13. O- -ring
14. Seal
15. Trunnion cover
16. Neutral switch
17. Lock washer
18. Screw (4 used)
NOTE: For piston (traction) pump repair information,
see the Sauer--Danfoss LPV Closed Circuit Axial Piston
Pumps Repair Manual and Service Instructions at the
end of this chapter.
Hydraulic System
18
19
23
24
17
28
24
16
36
40
43
41
42
44
45
46
47
19. Control arm
20. Screw
21. Charge relief poppet
22. Spring
23. Bracket
24. Nut
25. Seal nut
26. Pin
27. Swashplate
28. Thrust plate
29. Shim kit
30. O- -ring
31. Charge relief plug
32. Retaining ring
33. Bearing
34. Neutral return arm
35. Neutral return pivot
36. Spring
15
12
9
14
13
8
25
26
32 33
26
27
34
35
39
Figure 71
IMPORTANT: If a piston (traction) pump failure oc-
curred, refer to Traction Circuit Component Failure
in the General Information section for information
regarding the importance of removing contamina-
tion from the traction circuit.
Page 4 - - 72
5
4
2
1
3
8
9
10
11
13
12
37
38
37. Cylinder block kit
38. Valve plate
39. Slotted pin
40. End cap gasket
41. Seal kit
42. Relief valve (reverse)
43. Needle bearing
44. Loop flushing spool
45. Spring
46. Plug
47. O- -ring
48. Bypass valve
49. Seal kit
50. End cap
51. Coupling
52. Screw (4 used)
53. Relief valve (forward)
54. Seal kit
Groundsmaster 4300--D
5
7
6