Troy-Bilt 660 Series, Illustrated Parts Manual

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77
660 Series Transmission Assembly
* — The flat washers listed are used as required to obtain .005 to
.030 in allowable end play on the wheel shaft and tine shaft and
a .005 to .015 in end play on the drive shaft.
Ref. Part Number Description
1. 1105620 Pipe Plug
2. 1113527 Retaining Ring
3. 1915068 Hex Screw, 1⁄4-20 x .625
4. 1915069 Self-Sealing Screw, 1⁄4-20 x .875
5. 611-04002 Eccentric Shaft
6. 619-04010 Transmission Housing
7. 710-04043 Hex Flange Screw, 5⁄16-18 x .750
8. 711-04080 Tiller Shaft
9. 711-04482 Wheel Shaft
10. 716-04102 Retaining Ring
11. 716-04104 Retaining Ring
12. 718-04406 Rear Bearing Cover
13. 721-04001 Oil Seal, 1.79 x .25
14. 721-04031 Oil Seal, 1.0 x 1.499
15. 721-04034 Oil Seal, .625 x 1.0
16. 721-04035 Oil Seal, .984 x 1.75
17. 721-04044 Oil Seal, .750 x 125
18. 736-04258 Washer, 1.375 x 1.015 x .01*
— 736-04259 Washer, 1.375 x 1.015 x .015*
— 736-04260 Washer, 1.375 x 1.015 x .03*
— 736-04305 Washer, 1.75 x 1.5 x .062*
— 736-04306 Washer, 1.75 x 1.5 x .005*
— 736-04307 Washer, 1.75 x 1.5 x .03*
— 736-04308 Washer, 1.75 x 1.5 x .01*
— 736-04309 Washer, 1.375 x 1.015 x .062*
Ref. Part Number Description
19. 741-04298 Cone Bearing
20. 741-04299 Cup Bearing
21. 741-04300 Bushing, 1.25 x 1 x .005 x 1.5
22. 741-3037 Ball Bearing
23. GW-1104 Woodruff Key, .25 x 1.12
24. GW-1442 Pin, .375 x .72
25. GW-20694 Transmission Cover Gasket
26. GW-20712 Wheel Drive Clutch
27. GW-20718 Spur Gear
28. GW-20791 Pinion Shaft
29. GW-20792 Pinion Gear
30. GW-20873 Housing Cover
31. GW-20910 Transmission Cover
32. GW-20912 Drive Shaft
33. GW-20913 Worm Gear
34. GW-20914 Wheel Drive Gear
35. GW-9055 Spring, .850 x .875
36. GW-9093 Bowed Ring
37. GW-9301 Key, .188 x 1
38. GW-9373 Hi-Pro Key, .25 x 1.312
39. GW-9428 Bushing, 1.24 x .75 x .18
40. GW-9467 Oil Plug
41. GW-9677 Hex Screw, 5⁄16-18 x .38
42. GW-9935 Washer, 1.46 x 1.016 x .062
43. GW-9953 Washer, 1.022 x .75 x .059