ENGINE HARD TO START OR WILL NOT START - TM-10-3930-638-24-P0051

TM 10-3930-638-24&P

2-9. ENGINE TROUBLESHOOTING (cont)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. ENGINE HARD TO START OR WILL NOT START (cont)

Step 12. Disconnect ground cable from battery.

Disconnect positive cable from starter

B terminal and connect to ammeter. Connect

a test cable from ammeter to starter B terminal.

Correct ground cable to battery.

Place ignition switch in ON position and depress

START pushbutton while observing ammeter.

Ammeter should indicate 75 to 95 amperes.

a If ammeter reading is higher than 95 amperes, replace starter (para2-27a).

b. If ammeter reading is less than 75 amperes, check battery (para 2-20, MALFUNCTION

1, step 3). If battery checks good, replace battery cables (para 2-33b).

c. If ammeter reading is between 75 to 95 amperes, notify direct support maintenance.

2. ENGINE HARD TO START OR WILL NOT START (EXHAUST SMOKE)

NOTE

Also refer to MALFUNCTION 1, steps 1,2,7 through 9, and 11.

Step 1. Check for fuel leaks at fuel injector lines.

a. If fuel leaks are observed, tighten or replace lines (para 3-6a; notify direct support maintenance).

b. If fuel lines are okay, proceed to step 2 below.

Step 2. Remove radiator cap and observe coolant for gas bubbles while cranking engine.

If gas bubbles rising in coolant are observed, replace cylinder head gasket (para 3-5g notify

direct support maintenance).

3. ENGINE STARTS BUT WILL NOT RUN

WARNING

If NBC exposure is suspected, all air falter media should be handled

by personnel wearing protective equipment. Consult your unit NBC

or NBC NCO for appropriate handling or disposal procedures.

Step 1. Check if air cleaner red flag is in view.

a If in view, depress reset button on top of indicator and check that red flag disappears from view.

(If red flag does not disappear from view, replace air cleaner indicator as described in para 2-15c).

b. If red flag is not in view, proceed to step 2 below.

Step 2. Check if there is fuel in fuel tank.

a Fill fuel tank if no fuel in fuel tank

b. If fuel in fuel tank, proceed to step 3 below.

Change 5

2-15