ENGINE CRANKS BUT DOES NOT START WHEN QUICK START IS ACTIVATED

TM 10-3930-638-24&P

2 - 9 . ENGINE TROUBLESHOOTING (cont)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

6. ENGINE CRANKS BUT DOES NOT START WHEN QUICK START IS ACTIVATED

Step 1. Check that quick start cylinder is hand tight.

a. If cylinder is not hand tight, tighten.

b. If cylinder is hand tight, proceed to step 2 below.

Step 2. Check ether supply; press lever against valve and listen for hissing.

a. If hissing sound is not heard, replace empty cylinder (para 2-15h).

b. If hissing sound is heard, proceed to step 3 below.

Step 3. Check tubing for leaks or damage; listen for hissing sound when lever is pressed against valve.

a. If hissing sound is heard. replace tubing (para 2-15h).

b. If hissing sound is not heard, proceed to step 4 below.

Step 4. Check valve for damage.

Replace valve (para 2-15h).

7. EXCESSIVE OIL CONSUMPTION

Step 1.

Check for engine oil leaks at cylinder head cover gasket. oil pan gasket, timing gear cover gasket,

engine oil filter, and oil drain plug gasket.

a. If oil leaks are observed by engine oil filter and oil drain plug, tighten oil filter and replace oil

drain plug gasket (para 2-14b).

If leaks are observed at other areas, notify direct support maintenance.

b. If oil leaks are not observed, proceed to step 2 below.

Step 2. Check if too light an engine oil is used

a. If engine oil is too light, drain engine oil and replace engine oil filter (para 2-14c).

(Refer to current lubrication order for correct weight engine oil.)

b. If engine oil is okay, proceed to step 3 below.

Step 3. With engine operating, check oil pressure gage for excessively high pressure indication (normal oil

pressure indication is between 50 to 70 PSI).

If oil pressure gage indication is excessively high, notify direct support maintenance.