ENGINE FAILS TO CRANK WHEN STARTER IS ENGAGED WARNING (cont) -624880077

TM 5-2420-222-20-1

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.

a. If starter (1) makes grinding noise or no sound is heard, go to step 2.

b. If solenoid (2) thumps but starter (1) does not spin, replace starter (page 2-460).

c. If starter (1) spins, go to step 23.

Step 2.

Check Ignition lock switch IGN terminal (3) and BATT terminal (4) for loose, corroded, frayed, and

broken connections.

If ignition wire terminal (5 or 6) or battery wire terminal (7) is loose, tighten nut (8 or 9)

using 3/18-inch box wrench.

If switch terminal (3 or 4) or wire terminal (5 thru 7) is corroded, clean using wire brush.

If switch terminal (3 or 4) is broken, replace Ignition lock switch and key (page 2-565).

If ignition wire terminal (5 or 6) or battery wire terminal (7) is frayed or broken, repair

Step 3.

Check starter switch terminals (10 and 11) and connector (12) for loose, corroded, and broken

connections.

a. If connector (12) is loose, push on all the way.

b. If terminals (10 or 11) or connector (12) are corroded, clean using wire brush.

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