7 - 17
7 Transmission Repair
7B Sauer-Sundstrand BDU-21L-207
1. Shaft, Pump
2. Ring, Retaining
3. Bearing, Ball
4. Spacer
5. Seal, Lip
6. Ring, Retaining
8. Bearing, Cradle
11. Bearing, Journal
12. Seal, Lip
13. Arm, Trunnion
14. Guide, Slot
15. Housing
16. Journal Bearing
17. Bearing, Thrust Ball
18. Plug, Pipe
19. Center Section
20. Bearing, Needle
21. Seal, Lip
22. Shaft, Motor
23. Washer
24. Plug
25. Swashplate
26. Bearing Guide
27. Washer, Thrust
28. Bearing, Roller, Thrust
29. Plate, Thrust
31. Cylinder Block, Pump
32. Cylinder Block, Motor
33. Piston
34. Spring, Helical
35. Washer, Spring Seat
36. Plug
37. Pin, Straight, Headless
38. Gasket, Center Section
42. Plug, Check Valve
43. O-Ring
44. Ball
45. Spring, Helical
46. Plug
47. Screw, Socket Head
48. Screw, Socket Head
50. Washer, Thrust
52. Plug
53. O-Ring
54. Spring, Helical
55. Spool, Bypass
56. Plug, Bypass
57. O-Ring
58. Nameplate
59. Plug
60. Spring, Helical
62. O-Ring
63. Housing, Charge Pump
64. Gerotor Assembly
65. Spring
66. Ball
67. Screw, Socket Head
Figure B-3. Sauer-Sundstrand BDU-21L-207 Hydrostatic Pump Exploded View
NOTE: Parts on this page are shown for
reference purposes only, and may not be
individually serviceable. Always consult
parts manual before attempting any
major repair.
Summary of Contents for 1691766
Page 2: ......
Page 20: ...2 Troubleshooting Notes 2 4 ...
Page 34: ...3 14 3 Maintenance Notes ...
Page 86: ...6 General Repair 6A Steering Front Wheel Repair Notes 6 16 ...
Page 130: ...6 60 6 General Repair 6C Foot Controls Repair ...
Page 188: ...7 46 7 Transmission Repair 7C Hydro Gear 216 3010L ...
Page 240: ...8 20 8 Mower Deck Repair Notes ...