ENGINE CRANKS BUT FAILS TO START OR IS HARD TO START ABOVE 32F (0C) (cont) -624880105

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

ENGINE CRANKS BUT FAILS TO START OR IS HARD TO START ABOVE 32F (0C) CONTINUED

Step 11.

Remove and inspect fuel injection tube (page 2-213).

a. If fuel injection tube was plugged, remove and clean all remaining fuel injection tubes (page 2-

213).

b. If fuel injection tube was not plugged, install (page 2-213) and notify Direct Support Maintenance.

WARNING

No open flames, welding, grinding, smoking, or use of heat producing devices permitted near fuel tank

and fuel lines during maintenance unless the fuel tank has been cleaned and purged of all flammable

liquids and vapors. Fuel burns easily and fumes are explosive. Keep battery disconnected. Failure to

observe these precautions could cause serious injury.

Step 12.

Using 5/8-inch open-end wrench, unscrew fuel line (1) from elbow (2) approximately one-half turn.

Have assistant move primer lever (3) up and down. Check that diesel fuel squirts out from between

fuel line (1) and elbow (2).

a. Using 518-inch open-end wrench, tighten line (1) to elbow (2) if diesel fuel squirts out from fuel

line (1).

b. If diesel fuel does not squirt out from fuel line (1), go to step 13.

Step 13.

Using 5/8-inch open-end wrench, unscrew fuel line (1) from elbow (4) approximately one-half turn.

Move primer lever (3) up and down. Check that diesel fuel squirts out from between fuel line (1) and

elbow (4).

a. If diesel fuel squirted out from fuel line (1), clean or replace fuel filter-to-fuel metering pump fuel

line (page 2-292).

b. If diesel fuel does not squirt out from fuel line (1), tighten line (1) to elbow (4) using 518-inch

open-end wrench. Go to step 14.

Step 14.

Using 5/8-inch open-end wrench, unscrew fuel line (5) from elbow (6) approximately one-half turn.

Move primer lever (3) up and down. Check that diesel fuel squirts out from between fuel line (5) and

elbow (6). Using 5/8-inch open-end wrench, tighten line (5) to elbow (6).

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