R380 Manual Gearbox Overhaul: Gearbox Casings
MANUAL GEARBOX
DESCRIPTION AND OPERATION
5
GEARBOX CASINGS
1. Front cover - Early gearboxes
2. Front cover - Later gearboxes
3. Input shaft oil seal
4. Oil filler/level plug
5. Oil drain plug
6. Sealing washer
7. Gearcase
8. Interlock spool retainer, bolt and ’O’ ring - if
fitted
9. Centre plate
10. Locating dowels
11. Selector plug, detent balls and springs
12. Splash shield and bolt
13. Extension housing - Types A and B gearbox
14. Gate plate and bolt
15. Interlock spool retainer, bolt and ’O’ ring
16. Inhibitor cam spring
17. Inhibitor cam
18. Reverse inhibitor shaft
19. Output shaft oil seal collar
20. Oil seal
21. Oil pump
22. ’O’ ring
23. Reverse light switch
24. Oil cooler by-pass and bolt
25. ’O’ ring
26. Oil pick-up pipe
27. Oil filter
28. Oil pick-up ring
29. Oil cooler adaptor
30. Bolt
31. ’O’ ring
32. Extension housing - Type C gearbox
33. Gate plate and bolt - Type C gearbox
34. Inhibitor cam end plate and bolt - Type C
gearbox
35. Interlock spool retainer, bolt and ’O’ ring - Type
C gearbox
36. Selector shaft oil seal - Type C gearbox
37. Spacer - Type C gearbox
38. Speedometer pinion - Type C gearbox
39. Oil seal - Type C gearbox
40. Output shaft drive flange - Type C gearbox
41. ’O’ ring - Type C gearbox
42. Spacer - Type C gearbox
43. Tab washer - Type C gearbox
44. Drive flange bolt - Type C gearbox
45. Drive flange propeller shaft bolt - Type C
gearbox
46. Support bracket - Type C gearbox
47. Extension housing - Type D gearbox
48. Oil seal - Type D gearbox
49. Interlock spool retainer, bolt and ’O’ ring - Type
D gearbox