TM-9-2320-280-20-1

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 1 OF 3

JANUARY 1996

TM-9-2320-280-20-1 - Page 302 of 888

TM 9-2320-280-20-1

REFERENCE INFORMATION

ALTERNATOR

Change 2

2-218.1

1. Start Test 10, Engine RPM.

2. Crank or start the engine. Displayed

reading is RPM. Engine RPM should

be 1200 - 1500.

NOTE

For 60 amp Prestolite alternator, go to B,

page 2-204.

For 100 amp Prestolite alternator, go to C,

page 2-208.

For 200 amp Prestolite alternator, go to D,

page 2-212.

For 200 amp single voltage Niehoff alternator,

continue with E.

For 100 amp single voltage Niehoff alternator, go

to F, page 2-222.

For 100 amp dual voltage Niehoff alternator, go to

F.1, page 2-224.2.

For 200 amp dual voltage Niehoff alternator, go to

G, page 2-224.6.

For 400 amp dual voltage Niehoff alternator, go to

H, page 2-224.10.

NOTE

The regulator for this model alternator has

overvoltage protection. Any output voltage over

30.5 volts is an overvoltage.

Output voltage of 26 - 30.5 is acceptable for this

alternator.

ENGINE RPM

STE/ICE-R TEST 10

1. Connect RED clip to the indicated

test point, BLACK clip to negative or

ground.

2. Start Test 89, DC volts.

3. Displayed reading is in volts.

0-45 DC VOLTS

STE/ICE-R TEST 89