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Figure 3-5. Alternator Assembly, Exploded View (Sheet 1 of 2) | Up
TM-9-6115-464-34 Generator Set Diesel Engine Driven Tactical Skid Mtd 15 Kw 3 Phase 4 Wire 120/208 and 240/416 Volts Manual | Next
Figure 3-6. Rotor Assembly Current Draw Test Circuit |
ARMY TM 9-6115-464-34
AIR FORCE TO 35C2-3-445-2
NAVY NAVFAC P-8-624-34
1. Screw
2. Regulator and cover assembly
3. Fuse holder
4. Nut
5. Washer
6. Cap
7. Fuse
8. Screw
9. Cover band
10. Thru bolts
11. Head assembly (slip ring end)
12. Nut
13. Nut
14. Lockwasher
15. Brush lead
16. Screw
17. Lockwasher
18. Insulating plate
19. Brushholder
20. Brush and spring assembly
21. Nut
22. Nut
23. Nut
24. Lockwasher
25. Screw
26. Flat washer
27. Capacitor and clamp assembly
28.
29.
30.
31.
32.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
Capacitor and clamp assembly
Nut
Flat washer
Flat washer
Flat washer
Flat washer
Stud
Insulating bushing
Insulating bushing
Insulating bushing
Insulating bushing
Rectifier and stator assembly
Negative plate and rectifier assembly
Positive plate and rectifier assembly
Stator assembly
Nut
Pulley
Fan
Woodruff key
Spacer
Head assembly (drive end)
Rotor assembly
Snap ring
Bearing (front)
Bearing (rear)
Cover
O-ring
Figure 3-5. Alternator Assembly, Exploded View (Sheet 2 of 2)
(7) Using an ohmmeter, check continuity of each phase of stator assembly. Replace stator assembly if
ohmmeter indicates open circuit of one or more phase.
(8) Visually inspect rotor assembly for rub marks and burns or other evidence of shorting. Inspect shaft
for worn key slot and bearing surfaces.
(9) Test rotor assembly as follows:
(a)
(b)
(c)
(d)
(e)
(10)
(11)
(12)
(13)
3-18
Install rotor assembly in test setup shown in figure 3-6.
Adjust rheostat until voltmeter indicates 20 Vdc.
Ammeter should indicate 2.8 to 3.0 amperes at 70° to 80°F (21.1 ° to 26.7°C).
High current reading on ammeter indicates low resistance, or a shorted rotor warning.
Using an ohmmeter, check resistance across slip rings. Resistance should be 7.5 to 8.0 ohms at an
ambient temperature of 70° to 80‘F (21.10 to 26.7°C).
Replace rotor assembly if inspection and test requirements are not met.
Inspect voltage regulator connector, cover assembly, and voltage adjust for cracks, corrosion, and
evidence of shorting or other damage.
Inspect fuse holder for cracks, corrosion, and other damage. Check fuse for burned out condition.
Check fuse for continuity if in doubt.
Inspect brush assembly for corrosion and excessive wear.
33.
Nut
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