TM-9-2320-280-34

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

JANUARY 1996
TM-9-2320-280-34

  TM-9-2320-280-34 - Page 335 of 1258

This task covers:
a.
Alternator Output Testing
d.
Cleaning
b.
Disassembly
e.
Assembly
c.
Static Testing
a. Alternator Output Testing
1.
Mount pivot arm of 500 amp test stand to high-speed side and install mounting flange adapter on
pivot arm. Connect pulley driveshaft to high-speed head. Install pulley driveshaft on mounting
flange adapter.
2.
Mount alternator to starter/alternator mounting bracket on 500 amp test stand. Connect belt from
test stand pulley to alternator pulley. Adjust belt tension.
3.
Connect cable from alternator ground terminal to test stand G- terminal. Connect cable from
alternator battery terminal to test stand G+ terminal. Connect cable from alternator regulator IGN
to test stand F terminal.
4.
Connect 28 VDC output and 14 VDC output to test stand. Auxiliary voltage and current meters may
be required to measure 14 VDC output.
5.
Fabricate a jumper wire with a ring terminal at both ends. Connect jumper wire on test stand from
IGNITION SWITCH terminal to F-B terminal.
INITIAL SETUP:
Tools
General mechanic’s tool kit:
automotive (Appendix G, Item 1)
Puller (Appendix G, Item 136)
Test Equipment
Multimeter (Appendix G, Item 120)
Test stand (Appendix G, Item 94)
Materials/Parts
Silicone compound (Appendix B, Item 57)
RTV sealant (Appendix B, Item 43)
Locknut (Appendix E, Item 63)
Eighteen locknuts (Appendix E, Item 64)
Three lockwashers (Appendix E, Item 87)
Twelve locknuts (Appendix E, Item 65)
Personnel Required
One mechanic
One assistant
Manual References
TM 9-2320-280-20
TM 9-2320-280-24P
TM 9-4910-663-12
TM 9-4910-485-12
Equipment Condition
Alternator removed (TM 9-2320-280-20).
General Safety Instructions
Always support alternator core and shaft assembly
during removal and installation.
Maintenance Level
Direct support
TM 9-2320-280-34
6 - 1 8 . 3 0
Change 1
6 - 3 . 3 . 100 AMPERE DUAL VOLTAGE ALT E R N ATOR (12447110) TESTING AND REPA
I R


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