ENGINE FAILS TO CRANK WHEN STARTER IS ENGAGED WARNING (cont) -624880085

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. ENGINE FAILS TO CRANK WHEN STARTER IS ENGAGED CONTINUED

WARNING

Although ignition lock switch must be on and battery ground cable connected to test

electrical circuit voltage, turn off ignition lock switch and disconnect battery ground

cable before doing resistance tests or replacing parts. This will keep you from getting

shocked and prevent damage to parts and equipment.

Step 12.

Using multimeter set to 30 vdc scale, place red probe on solenoid battery terminal (1) and black

probe on engine block (2). Check for 11 to 13 vdc on multimeter.

a. If multimeter reads 11 to 13 vdc, go to step 13.

b. If multimeter reads less than 11 vdc, replace battery starter cable (page 2-710).

Step 13.

Using multimeter set to 30 vdc scale, place red probe on solenoid terminal (3) and black probe on

engine block (2). Have assistant turn ignition lock switch (4) clockwise to ignition, and push in and

hold starter switch (5) for a few seconds. Check for 11 to 13 vdc on multimeter. Have assistant turn

ignition lock switch (4) counterclockwise to off.

a. If multimeter reads 11 to 13 vdc, replace starter (page 2-460).

b. If multimeter reads less than 11 vdc, go to step 14.

Step 14.

Using multimeter set to 30 vdc scale, place red probe on ac generator terminal (6) and black probe

on engine block (2). Check for 11 to 13 vdc on multimeter.

a. If multimeter reads 11 to 13 vdc, go to step 15.

b. If multimeter reads less than 11 vdc, repair wire (7) from ac generator to solenoid (page 2-137).

Step 15.

Using multimeter set to 30 vdc scale, place red probe on 40 ampere breaker terminal (8) and black

probe on cowl support (9). Check for 11 to 13 vdc on multimeter.

a. If multimeter reads 11 to 13 vdc, go to step 16.

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