Servicing The Hydrostatic Transmission (Machine Serial Numbers Below 316000000) - Toro Groundsmaster 3280-D Service Manual

Servicing the Hydrostatic Transmission (Machine Serial Numbers
below 316000000)
g230836
1. Retaining ring
2. Trunnion shaft
3. Flat washer
4. Roller bearing
5. Needle bearing
6. Transmission housing
7. Lip seal
8. Trunnion cam
9. Lip seal
10. Ball bearing
11. Woodruff key
12. Pump shaft
13. Swash plate
14. Spring pin
15. Thrust plate
16. Cylinder block (pump)
17. Pump valve plate
18. Needle bearing
19. Slipper retainer (pump)
Groundsmaster ® 3280-D/3320
05138SL Rev B
Figure 82
20. Piston (pump) (9 each per block)
21. O-ring
22. Check valve
23. Plug
24. O-ring
25. Shim pack
26. Relief valve spring
27. Relief valve cone
28. Plug
29. Bolt (2 each)
30. Bolt (2 each)
31. Backup ring
32. O-ring
33. O-ring
34. Pin
35. Bearing
36. Woodruff key
37. Gerotor (charge) pump
38. Shaft seal
Page 5–93
39. Center section
40. Pipe plug (4 each)
41. O-ring
42. Threaded plug
43. Bolt (4 each)
44. Expansion plug
45. Motor valve plate
46. Dowel pin
47. Motor shaft
48. Dowel pin (2 each)
49. Housing gasket
50. Charge pump housing
51. Retaining ring
52. Cylinder block (motor)
53. Slipper retainer (motor)
54. Piston (motor) (9 each per block)
55. Flange-head screw (2 each)
56. O-ring (2 each)
57. Threaded plug (2 each)
Hydraulic System: Service and Repairs