Figure 2. Batteries/Charging System Schematic

Troubleshoot The High Mobility Multi- Purpose Wheeled Vehicle (HMMWV)
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positive power stud and the ground cable in the battery box. If the

battery voltage is greater than 28.2 Volts, adjust the alternator

following the procedures in paragraph 4-2, page 4-6 of the TM.

the battery voltage is less than 27.8 Volts, check for loose or

broken drivebelts.

If the belts are loose or broken, adjust or

replace them following the procedures in paragraphs 3-74 and 3-76,

pages 3-122 and 3-126 of the TM.

Now repeat step 1 and check the

battery voltage. If the battery voltage is still too low, adjust the

alternator following procedures contained in paragraph 4-2, page 4-2

of the TM.

If the battery voltage is between 27.8 and 28.2 Volts,

check the operation of the voltmeter gage (refer to malfunction 15 on

page 2-40 of the TM).

FIGURE 2.

BATTERIES/CHARGING SYSTEM

SCHEMATIC.