Piston Pump Service - Toro Reelmaster 3100-D Service Manual

Piston Pump Service

4
28
5
6
3
2
1
31
30
33
34
35
1. Key
2. Drive shaft
3. Bearing
4. Cap screw (3 used per cover plate)
5. Cover plate
6. Seal
7. Shim kit
8. Bearing cone
9. Key
10. Cam plate
11. Rotating kit
12. Gasket
13. Valve plate
14. Bearing
15. Dowel pin
16. Back plate
17. O−ring
18. Plug
NOTE: For repair of the piston pump, see the Eaton
Medium Duty Piston Pump Repair Information Model
70160 Variable Displacement Piston Pump at the end of
this chapter.
NOTE: Reelmaster 3100−D machines with serial num-
bers below 90775 were equipped with an Eaton model
70160−LAA−01 piston pump. This pump included some
differences in the trunnion shaft design (Items 50 − 53
in Figure 66).
Hydraulic System
46
45
44
43
39
10
29
26
8
30
31
32
19. Spring
20. Seat
21. Dump valve
22. Cap screw
23. Cap screw
24. Roll pin
25. Cover plate
26. Bearing cup
27. Relief valve
28. Washer (3 used per cover plate)
29. Housing
30. Retaining ring
31. Bearing race
32. Thrust bearing
33. Washer
34. Shaft seal
35. Retaining ring
36. Bleed−off valve poppet
48
47
18
17
16
13
15
12
11
9
8
26
6
7
25
28
40
Figure 66
IMPORTANT: If a piston pump failure occurred, re-
fer to Traction Circuit (Closed Loop) Component
Failure in the General Information section for infor-
mation regarding the importance of removing con-
tamination from the traction circuit.
Page 4 − 100
19
27
21
38
20
19
24
36
14
15
37
41
49
EATON MODEL
70160−LAA−01
50
4
51 52
53
37. Bleed−off spring
38. O−ring
39. Cam plate insert
40. Shaft seal
41. O−ring
42. Coupler
43. Retaining ring
44. Washer
45. Charge relief spring
46. Charge relief poppet
47. Charge relief housing
48. O−ring
49. Cartridge
50. Shim (Model 70160−LAA−01)
51. Cover plate (70160−LAA−01)
52. Shaft seal (70160−LAA−01)
53. Retaining ring (70160−LAA−01)
Reelmaster 3100−D
22
42
22
23
17
18