4-2. 60 AMPERE ALTERNATOR MAINTENANCE (Cont’d)
c. Adjustment
TM 9-2320-280-20-2
4-6
Change 2
8.
Connect ground 3B (11) to alternator (15) with lockwasher (3) and capscrew (4). Tighten capscrew (4)
to 82-102 lb-in. (9-12 N•m).
9.
Connect lead 568A (14) to engine wiring harness (13).
10.
Install wire retainer strap (10) on alternator (15) with two lockwashers (9) and screws (8). Tighten
screws (8) to 30-35 lb-in. (3-4 N•m).
11.
Install two drivebelts (1) on alternator pulley (2).
12.
Adjust drivebelts (1) (para. 3-82).
13.
Check alternator (15) for correct output voltage adjustment (para. 4-2, task c.).
NOTE
Battery ground cable must be removed (para. 4-73).
1.
Using hex-head driver, remove pipe plug (12).
2.
Connect battery ground cable (para. 4-73).
3.
Start engine (TM 9-2320-280-10).
4.
Raise engine speed above idle.
5.
Put a load on the alternator by operating driving lights (TM 9-2320-280-10).
6.
Using a multimeter, check alternator (15) output voltage. Connect black test lead to ground
lead 3B (18). Connect red test lead to lead 5A (16). Output voltage should be 28 volts ± 0.5 volts. If
adjustment is required, go to step 7. If no adjustment is required, go to step 11.
7.
Turn adjusting screw (17) counterclockwise to increase voltage or clockwise to decrease voltage.
8.
Turn off driving lights (TM 9-2320-280-10).
9.
Return engine to idle.
10.
Stop engine (TM 9-2320-280-10).
11.
Apply sealing compound to pipe plug (12) threads. Using hex-head driver, install pipe plug (12) and
tighten to 30-40 lb-in. (3-4 N•m).
12.
Remove battery ground cable (para. 4-73).
13.
Seal terminal connections using adhesive sealant.
14.
Install terminal cover (7) on alternator (15) with two lockwashers (5) and screws (6).
