Corken D791 - Page 49

Appendix E—Crankcase Assembly Details
Ref
No.
Part No. Description
1. 1737 Bearing cone
2. 3638 Spacer
3. 3635 Drive sprocket
4. 1284 Crankshaft orifice
5. 2135 Drive pin
6. 2933 Link pin
7. 3786 Crankshaft
8. 3503 Flywheel key
9. 3580 Bearing cone
10. 3786-X1 Crankshaft assembly
11. 7001-031NC075A Bolt (5/16 - 18 x 3/4" hex head)
12. 2122 Inspection cover
13. 2123 Gasket, inspection cover
14. 2-112_
c
O-ring
15. 3225-X1 Oil bayonet assembly (w/O-ring)
16. 2126 Breather ball
17. 3579 Bearing cup
18.
3589 Bearing adjustment shim (.005")
3589-1 Bearing adjustment shim (.007")
3589-2 Bearing adjustment shim (.020")
19. 3539 Bearing cover
20. 3526 Oil seal
21. 1280 Filter screw
22. 1281 Gasket, filter
23. 2-116 _
c
O-ring
24. 1276 Washer
25. 1275 Oil filter screen
26. 3443 Pipe plug (1/2" NPT steel)
27. 3221 Crankcase
28. 7001-037NC100A Bolt (3/8 - 16 x 1" hex head Gr. 5)
29. 3875 Access cover
30. 7003-025NC037E Screw (1/4 - 20 x 3/8")
31. 3874 Gasket (access cover)
32. 1515-X Closure cap assembly
33. 7001-025NC050A Bolt (1/4 - 20 x 1/2" hex head)
34. 1515 Closure cap
35. 1516 Closure body
36. 2-118_
c
O-ring
37. 1290 Relief valve adjusting screw
38. 2-011_
c
O-ring
39. 1291 Adjusting screw locknut
40. 1292 Relief valve spring
41. 1293 Relief valve ball
42. 4222-X
b
Oil filter adapter assembly (w/pin)
43. 2-228_
c
O-ring
44. 2849-1X
b
Oil pump assembly
45. 2851 Spring guide
46. 2852 Oil pump spring
Crankcase Assembly Bill of Materials
Assembly
Number
Assembly Name
3221-X1 Crankcase assembly (M, 4, 8, 9) without lubricator
3221-X2 Crankcase assembly (M7, 78) without lubricator
3221-X3 Crankcase assembly (L, 4, 8, 9) with lubricator
3221-X4 Crankcase assembly (L7, 78) with lubricator
a
Must be rebored and honed after replacing (0.876"/0.875" diameter)
b
Caution: To avoid damage during assembly, refer to installation
Instruction Manual IE400.
c
_ denotes O-ring code. See O-ring chart above for details.
d
Registered trademark of the DuPont company.
CAUTION: Always relieve pressure in the unit before attempting
any repairs.
Ref
No.
Part No. Description
47. 3219 Pump shaft adapter
48. 2-112_
c
O-ring
49. 2805-X
a
Pump shaft bushing
50. 1629 Pipe plug (1/16 NPT fl. seal)
51. 1736 Bearing cup
52. 1302 Oil pressure gauge
53. 1044 Bushing (1/8 x 1/4 NPT)
54. 3220-2 Bearing carrier
55. 3289 Pipe plug (1/4 NPT fl. seal)
56. 2131 Bearing carrier gasket
57. 2961-X Air release valve assembly
58. 2590 Pipe plug (1/8 NPT fl. seal)
59. 4225 Filter
60. 2798 Pump cover pin (included w/4222-X)
61. 3220-2X Bearing carrier assembly
62. 4222 Oil filter adapter
63. 3289 Pipe plug (1/4" x 18 NPTF x 7/8")
O-ring Code
A Buna-N
B Neoprene
®b
D Viton
®b
E PTFE
K Kalrez
®b
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