TM 5-4310-389-14
1.
Connect multimeter as shown (figure 3-41).
Figure 3-41. Alternator Output Test
2.
Start and run engine at a fast idle (1200 to 1500 rpm).
3.
Check for system output voltage of 13.8 to 14.8 volts. Voltage may vary a few tenths due to ambient
temperature. If alternator voltage is not as indicated, replace or notify Direct Support for alternator repair.
REPLACE
a.
Disconnect negative battery terminal and then disconnect positive battery terminal.
b.
Disconnect terminals at alternator.
c.
Loosen bolts that secure alternator to engine bracket.
d.
Push against alternator to remove V-belt.
e.
Remove bolts (1, 2 and 3, figure 3-42) and remove alternator from engine.
f.
Replace alternator by installing bolts (1, 2 and 3) and install belts. Refer to paragraph 3-23 for proper tension and
adjustment.
g.
Check belts for alignment. Correct any misalignment by adding or deleting washers.
3-72
