TM 9-2320-280-34
This task covers:
a. Alternator Output Testing
d. Cleaning
b. Disassembly
e. Assembly
c. Static Testing
INITIAL SETUP:
Applicable Models
Personnel Required
M996, M996A1, M997, M997A1, M997A2
One mechanic
One assistant
Tools
Manual References
General mechanic's tool kit:
TM 9-2320-280-20
automotive (Appendix G, Item 1)
TM 9-2320-280-24P
Puller (Appendix G, Item 136)
TM 9-4910-663-12
Test Equipment
TM 9-4910-485-12
Multimeter (Appendix G, Item 120)
Equipment Condition
Test stand (Appendix G, Item 94)
Alternator removed (TM 9-2320-280-20).
Materials/Parts
General Safety Instructions
RTV sealant (Appendix B, Item 43)
Always support alternator core and shaft assembly
Silicone compound (Appendix B, Item 57)
during removal and installation.
Locknut (Appendix E, Item 70)
Locknut (Appendix E, Item 67)
Maintenance Level
Eighteen locknuts (Appendix E, Item 69)
Direct support
Twelve locknuts (Appendix E, Item 68)
Twelve lockwashers (Appendix E, Item 111)
Two spring tension washers
(Appendix E, Item 264)
Two seals (Appendix E, Item 203)
a. Alternator Output Testing
1.
Mount 500-amp test stand pivot arm 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.
Position adapter mount (1) to bracket (9) on test stand.
3.
Install adapter mount (1) on bracket (9) with washer (3), screw (2), washer (3), and nut (8). Do not
tighten screw (2).
4.
Loosen locking handle (10) on bracket (9), raise bracket (9) to highest point, and tighten locking
handle (10).
5.
Install support plate (4) on adapter mount (1) with two washers (5), screws (6), washers (5), and
nuts (7). Do not tighten nuts (7).
6.
Install two V-belts (11) on driver pulley (12) on alternator/generator/starter test stand.
7.
Position alternator (25) on adapter mount (1) and install two V-belts (11) on pulley (15).
8.
Position two washers (22) between rear lower mount (24) on alternator (25) and adapter mount (1),
and install washer (21), screw (23), washer (21), and nut (20). Do not tighten nut (20).
9.
Align front lower mount holes (16) on alternator (25) and adapter mount (1) and install washer
(18), screw (19), washer (18), and nut (17). Do not tighten nut (17).
10.
Align top mount hole (26) on alternator (25) and adapter mount (1) and install two washers (13)
and screw (14).
Tighten nuts (20) and (17) to 40 lb-ft (54 Nm).
11.
Change 2
