Cleaning, Inspection and Repair. - TM-10-3930-624-340086

ME 3930-624-34/5-1

1. Thru bolts

24. Nut

2. Shaft nut

25. Lockwasher

3. Washer

26. Washer

4. Pulley

27. Insulating washer

5. Fan

28. Insulator

29. Terminal stud

6. Collar

30. Capscrew

7. Key

31. Washer

8. Rotor

9. Capscrew

32. Brush holder

33. Brush

10. Retainer

34. Brush spring

11. Collar

35. Capscrew

12. Gasket

36. Lockwasher

13. Bearing

37. Washer

14. End frame

38. Capacitor

15. Stator

39. Nut

16. End frame bearing

40. Lockwasher

17. Retainer

41. Terminal stud

18. Nut

42. Insulator

19. Lockwasher

43. Diode (positive)

20. Washer

44. Diode (negative)

21. Insulating washer

45. Heat sink

22. Insulating washer

46. Frame

23. Terminal stud

Figure 5-1. Alternator.

c. Cleaning, Inspection and Repair.

(a) Check the rotor circuit for grounds.

(1) Cleaning. Clean all parts of the alternator

Connect a test lamp or an ohmmeter to each of the

with cleaning solvent, except for the stator (15, fig.

slip rings in turn and to the rotor shaft. Refer to fig.

5-1), rotor (8), and heat sink 145). Dry thoroughly

5-2. If the lamp lights or the ohmmeter produces a

with compressed air.

low reading, it indicates that the rotor is grounded

(2) Rotor checking procedure.

and the alternator must be replaced.

5-2