TM-9-2320-361-24-1

2-1/2 TON, 6X6, M44A2 SERIES TRUCKS

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2

AUGUST 2006

TM-9-2320-361-24-1 - Page 317 of 1176

TM 9-2320-361-24-1

0018 00

0018 00-13

SIMPLIFIED TEST EQUIPMENT FOR INTERNAL COMBUSTION ENGINE—

REPROGRAMMABLE STE/ICE-R NO-GO CHAIN TROUBLESHOOTING (Contd)

Table 2. STE/ICE-R No-Go Chain Test (Contd).

• Proceed to next page.

PROMPTING

MESSAGE

CHARGING CIRCUIT TESTS (Contd)

NG50

TK

MODE

CHECK CHARGING SYSTEM OUTPUT CURRENT:

• Dial 03 into TEST SELECT switches and press TEST.

• When PASS is displayed, dial 90 into TEST SELECT

switches and press TEST.

• Start vehicle engine (TM 9-2320-361-10), turn on

vehicle lights and other electrical accessories.

• Set engine speed to fast idle (1200 RPM).

• Press TEST

• Compare number on display with output current

specification as listed below.

3

• Is output current low?

TEST NO.

ALTERNATOR

OUTPUT CURRENT

M44A2

ALT. MIN. OF 30 AMPS/ALT MIN. OF 15 AMPS

• Shut engine and vehicle

accessories off.

• Does engine have alternator

drive belts?

NO

YES

NOTE

After completing repair, rerun GO Chain

tests (WP 0017 00) to verify that problem

is fixed and no other problems exist.

• Output current is greater. Use current probe

to locate accessory or wire drawing excessive

current.

• If current is going into batteries, check

electrolyte level and specific gravity.

• Refer to Troubleshooting Index

(WP 0011 00) to make necessary repairs.