This task covers:
a. Removal
b. Installation
a. Removal
NOTE
Prior to removal, tag leads for installation.
1.
Slide back rubber boot (4) and remove capscrew (1), lockwasher (2), washer (3), and ground cable (5)
from alternator (6). Discard lockwasher (2).
2.
Slide back rubber boot (18) and remove nut (21), lockwasher (20), washer (19), alternator positive
cable (17), nut (16.2), and washer (16.1) from positive stud (16). Discard lockwasher (20).
NOTE
• Perform steps 3 and 4 for 6.2 L engine only.
• Perform step 5 for 6.5 L engine only.
• In some cases, a thru-bolt and nut may be present on mounting
bracket instead of standard capscrews and washers.
3.
Loosen capscrews (11) and (13) on alternator adjusting bracket (8) and two capscrews (23) from
alternator (6), alternator mounting bracket (25), and support bracket (24).
NOTE
All “A2” models except the M997A2 are equipped with serpentine belts.
4.
Remove two drivebelts (7) from alternator pulley (14).
5.
Position 3/8-inch breaker bar on belt tensioner (22), move tensioner (22) clockwise, and remove
drivebelt (7) from alternator pulley (14).
WARNING
Alternator must be supported during removal and installation. Failure to
support alternator may cause injury to personnel or damage to equipment.
6.
Remove capscrew (11), lockwasher (10), and washer (9) from alternator (6) and adjusting bracket (8).
Discard lockwasher (10).
INITIAL SETUP:
Applicable Models
All models except M996, M996A1, M1026,
M1026A1, M1097, M1097A1, M1097A2, M1123
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Breaker bar, 3/8 in. (Appendix B, Item 2)
Materials/Parts
Lockwasher (Appendix G, Item 108)
Lockwasher (Appendix G, Item 136)
Lockwasher (Appendix G, Item 137)
Two lockwashers (Appendix G, Item 138)
Personnel Required
One mechanic
One assistant
Manual References
TM 9-2320-280-10
TM 9-2320-280-24P
Equipment Condition
• Battery ground cable removed (para. 4-73).
• Hood raised and secured (TM 9-2320-280-10).
• Voltage regulator removed (para. 12-22).
General Safety Instructions
Alternator must be supported during removal and
installation.
TM 9-2320-280-20-3
12-32
Change 1
12-24. 100 AMPERE ALTERNATOR (12342944) REPLACEMENT
