ALTERNATOR - TEST/REPLACE

TM 54930-233-14

TM 4930-14/1

AIR COMPRESSOR ASSEMBLY

4-24. ALTERNATOR - TEST/REPLACE

This task covers:

a. Test

b. Removal

Installation

INITIAL SET-UP:

Test Equipment

General Safety Instructions

(Section III, Item 4, App B)

Tools

WARNING

General Mechanics Tool Box

When working on electrical compo-

nents remove all jewelry, dogtags,

(Section III, Item 1, App B)

and metal items to avoid electrical

shock and bums.

Equipment Condition

Belts Removed (para 4-22)

Test

(1)

Attach multimeter leads (1), positive to positive battery terminal, and negative to negative battery terminal.

(2)

Check voltage. Voltage reading should be 24 volts without engine running.

(3)

Start engine. Voltage reading should be 25 to 26 volts. If not 25 to 26 volts, set adjusting screw accordingly.

NOTE

Turn adjusting screw (2) clockwise to increase, counterclockwise to decrease.

(4)

If voltage cannot be adjusted to proper level, remove alternator and replace.

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