TM 9-2320-280-34
This task covers:
a. Alternator Output Testing
c. Cleaning
b. Disassembly/Testing
d. Assembly
INITIAL SETUP:
Tools
Personnel Required
General mechanic's tool kit:
One mechanic
automotive (Appendix G, Item 6)
One assistant
Test Equipment
Manual References
Multimeter (Appendix G, Item 30)
TM 9-214
Test stand (Appendix G, Item 94)
TM 9-2320-280-20
TM 9-2320-280-24P
Materials/Parts
TM 9-4910-485-12
Two electrical brushes (Appendix E, Item 5)
TM 9-4910-663-12
Gasket (Appendix E, Item 30)
Equipment Condition
Preformed packing (Appendix E, Item 178)
Alternator removed (TM 9-2320-280-20).
Four lockwashers (Appendix E, Item 97)
Regulator removed (TM 9-2320-280-20).
Four lockwashers (Appendix E, Item 115)
Seven lockwashers (Appendix E, Item 116)
General Safety Instructions
Lockwasher (Appendix E, Item 114)
Always support alternator rotor during
Seal (Appendix E, Item 205)
removal and installation.
Two plain seals (Appendix E, Item 225)
Plain seal (Appendix E, Item 226)
Maintenance Level
Gasket (Appendix E, Item 33)
Direct support
Locknut (Appendix E, Item 74)
Machine key (Appendix E, Item 44)
Grease (Appendix B, Item 20)
a. Alternator Output Testing
1.
Mount pivot arm of 500 amp test stand to high speed side and attach mounting flange adapter to
pivot arm. Connect pulley drive shaft to high speed head. Attach pulley drive shaft to mounting
flange adapter.
2.
Mount alternator to starter/generator mounting bracket on 500 amp test stand. Connect V-belt
from 500 amp test stand pulley to pulley. Adjust belt tension.
3.
Connect cable from alternator ground terminal to 500 amp test stand G terminal. Connect cable
from alternator "Bat" terminal to 500 amp test stand G+ terminal. Connect cable from alternator
regulator IGN to 500 amp test stand F terminal.
4.
Make a jumper wire with a ring terminal at both ends. Connect jumper wire on 500 amp test stand
from IGN SWITCH terminal to F-B terminal.
NOTE
Prior to operation of the test stand, make certain that all switches
and controls are in the "initial" positions as referenced in:
Operator and Maintenance Manual, TM 9-4910-663-12
(UMC Model GSAR-500), or Operator and Maintenance Manual,
TM 9-4910-485-12 (Sun Model AGT-99A).
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