TM 9-6115-604-34
NAVFAC P-8-633-34
1. RIVET
25. HEXAGON HEAD SCREW
2. NAMEPLATE
26. HEXAGONAL NUT
3. FRONT COVER
27. LOCKWASHER
4. HEXAGON HEAD SCREW
28. FLAT WASHER
5. LOCKWASHER
29. REACTOR ASSEMBLY
6. ENCLOSURE
30. CAPSCREW
7. ENCLOSURE REAR PANEL
31. TERMINAL BOARD
8. RESISTOR
32. SCREW AND CAPTIVE WASHER ASSEMBLY
9. RESISTOR
33. ZENER RESISTOR
10. FLAT WASHER
34. ROUND HEAD SCREW
11. HEXAGON HEAD SCREW
35. TRANSISTOR
12. HEXAGON HEAD SCREW
36. CAPSCREW
13. SCREW
37. HEATSINK
14. FUSE BOARD
38. SILICONE DIODE
15. OUTPUT FUSE
39. EQUALIZER TIMER
16. INPUT FUSE
17. HEXAGON HEAD SCREW
40. DC VOLTMETER
18. LOCKWASHER
41. DC AMMETER
19. HEXAGONAL NUT
42. BATTERY CHARGER BC1 ASSEMBLY
20. BRACKET
43. DIODE
21. CUT OUT RELAY
44. RETAINING CLIP
22. FIXED CAPACITOR
45. FUSE HOLDER
23. HEXAGON HEAD SCREW
46. FUSE HOLDER
24. TRANSFORMER
47. ZENER DIODE
Figure 4-2. Battery Charger BC1, Exploded View (Sheet 2 of 2)
e.
Inspect the diodes (38 and 43) for signs of damage or deterioration. Check the diodes (38) with an ohmmeter set
to the RX1 scale as follows:
(1)
Temporarily install the diode (38) on the heatsink (37). Do not reconnect any electrical wiring to the diode
(38).
(2)
Connect an ohmmeter across the nipple (or pig-tail) lead of the diode (38) and the heatsink (37) and note
the reading.
(3)
Reverse the ohmmeter leads from their positions in step (2), above, and note the reading.
(4)
Compare the two readings obtained in steps (2) and (3), above. One of the two readings should indicate a
high resistance and the other should indicate a low resistance. If the readings do not indicate both a high
and low resistance value, or if either a zero resistance or an infinity reading was obtained, the diodes (38)
are faulty and must be replaced.
CAUTION
Do not change the position of the red slider band or the green slider band on the resistor (9) If
It Is to be reused, otherwise the float voltage and equalizer voltage values will be changed and
will need to be readjusted before the battery charger BC1 can be returned to service.
f.
Inspect the resistors (8 and 9) for signs of damage or deterioration.
g.
Inspect the transistor (35) for signs of damage or deterioration. Replace the transistor (35) as necessary.
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