ENGINE FAILS TO CRANK WHEN STARTER IS ENGAGED WARNING (cont) -624880079

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 4.

Check solenoid terminals (1 and 2), battery cable terminal (3), wire terminals (4 and 5), starter to

solenoid terminal (6), and connector (7) for loose, corroded, frayed, or broken connections.

a. If connections at terminals (1 thru 6) and connector (7) are not loose, corroded, frayed, or

broken, go to step 5.

b. If connection at terminal (1) is loose, tighten nut (8) using 9/16-inch box wrench.

c. If connection at terminal (2) is loose, tighten nut (9) using 11/32-inch box wrench.

d. If connection at terminal (6) is loose, tighten nut (10) using 5/16-inch, 1/4-inch drive socket and

ratchet handle and 6-inch extension.

e. If connections at terminals (1 thru 6) or connector (7) are corroded, clean using wire brush.

f. If terminal (1,2, or 6) or connector (7) is broken, replace starter (page 2-460).

g. If connection at battery cable terminal (3) is frayed or broken, replace battery starter cable (page

2-710).

h. If connections at terminals (4 and 5) are frayed or broken, repair (page 2-137).

Step 5.

Check ac generator terminal (11), and wire terminal (12) for loose, corroded, frayed, or broken

connections.

a. If connection at terminal (11) and wire terminal (12) is not. loose, corroded, frayed, or broken, go

to step 6.

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