Carburetor - TM-5-4320-258-340018

TM 5-4320-258-34

brackets, cracked seams, loose studs, and damaged

(4) Remove the four bolts and lock washers

that secure the fuel tank to the skid 'base. Remove the

threads. Replace a damaged fuel tank.

(3) Inspect the autofill float valve (14, fig.

fuel tank.

(5) Disassemble the fuel tank as shown in

32) for binding or catching operation of the float valve.

Inspect the float valve seat for nicks and damage.

figure 3-2.

b. Cleaning and Inspection.

Replace a damaged float valve.

(4) Inspect the fuel level gage for free

(1) Steam-clean the inside and outside of

operation of the float valve and proper registration of the

the fuel tank. Thoroughly flush with cleaning solvent

level indicator. Replace if damaged.

(FED. Spec. P-D-680).

c. Installation.

Warning: If conditions require emergency

Install the fuel tank by

fuel tank repairs by welding or other methods

reversing the removal procedure. Refer to figure 3-2.

3-3.

Carburetor

involving heat or flame, take care to assure that all

a. Removal. Remove the carburetor (TM

gasoline fumes are purged from the tank before

commencing the repair. Applying heat or flame to a

54320-258-12).

b. Disassembly. Disassemble the carburetor

fuel tank containing gasoline residue may result in a

as shown in figure 3-3. The index numbers assigned to

violent explosion, causing injury or death to

the parts indicate the order of disassembly. Note the

maintenance personnel.

following:

(2) Inspect the fuel tank for loose mounting

KEY to fig. 3-3:

34. Pump piston

35. Idling jet

36. Throttle body

1. Screw

37. Shaft nut

2. Gasket

38. Lock washer

3. Float axle

39. Return spring

4. Float and hinge assembly

40. Swivel screw

5. Fuel valve

41. Air shutter lever

6. Fuel valve seat

42. Clamp screw

7. Fiber washer

43. Nut

8. Filter head

44. Wire clamp

9. Washer

45. Shaft bushing

10. Filter element

46. Air shutter bracket

11. Idle adjusting screw

47. Screw 48. Shutter plate

12. Spring

49. Air shutter shaft

13. Venturi screw

50. Shaft hole plug

14. Venturi

51. Fiber washer

15. Cotter pin

52. Main jet adjusting

16. Retainer

53. Fiber washer

17. Clamp screw

54. Main jet

18. Clamp lever

55. Fiber washer

19. Spring

56. Lower plug

20. Bushing

57. Fiber washer

21. Stop screw

58. Accelerator jet

22. Clamp screw

59. Fiber washer

23. Nut

60. Main discharge jet

24. Lever stop

61. Fiber washer

25. Swivel screw

62. Power jet valve

26. Floating lever

63. Well vent

27. Taper pin

64. Check valve

28. Throttle plate screw

65. Pipe plug

29. Throttle plate

66. Drip plug

30. Throttle shaft

67. Fuel bowl assembly

31. Shaft hole plug

32. Seal retainer

33. Shaft seal

3-4