TM 9-2320-289-34
4-3.
ALTERNATOR TESTING AND REPAIR (M1010).
This task covers:
a. Alternator Output Testing
c. Cleaning and Inspection
b. Disassembly
d. Assembly
INITIAL SETUP:
Materials/Parts
Tools/Test Equipment
Two gaskets
• 500 amp test stand
Two “O” rings
• Belt tensioning gage
Three locknuts
l Micrometer
Three seals
• Multimeter
Ten Iockwashers
l Test light
Crocus cloth (Item 18, Appendix B)
Dry cleaning solvent (Item 23, Appendix B)
Manual References
Grease (Item 36, Appendix B)
l TM 9-214
Pipe sealant (Item 61, Appendix B)
Masking tape (Item 68, Appendix B)
Insulating varnish (Item 71, Appendix B)
General Safety Instructions
• Compressed air used for cleaning purposes should never exceed 30 psi (207 kPa).
l Dry cleaning solvent is flammable and must not be used near open flame. Use only in a
well-ventilated area.
a. ALTERNATOR OUTPUT TESTING
1.
Perform ALTERNATOR OUTPUT TESTING in paragraph 4-2, with the following exceptions:
(a) In step 6(b), set voltmeter range switch to “x4” instead of “x2.”
(b) In step 8, raise speed until tachometer reads 5000 rpm instead of 6500 rpm.
(c) In step 10, voltage should be 28.0-29.1 instead of 14.0. If readings are not correct, repair
alternator.
b.
DISASSEMBLY
CAUTION
If drive end housing (3) does not easily separate from stator (2), drive end
housing may be tapped with plastic hammer. Failure to follow this caution
may result in damage to stator.
NOTE
Ensure that relationship of slipring end housing (1), stator (2), and drive
end housing (3) are marked for assembly.
1.
Remove 3 locknuts, washers, and screws (6). Separate slipring end housing (1) and stator (2)
from drive end housing (3). Discard locknuts.
2.
Tag stator (2) leads for assembly, Remove 3 nuts and stator from slipring end housing (1),
4-14
