ENGINE CRANKS BUT FAILS TO START OR IS HARD TO START BELOW 32F (0C) (cont) -624880099

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 BELOW 320F (0C) 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.

Ether burns easily. If engine starting aid is not properly installed, do not release ether in confined areas

or near open flame. Engine primer fluid cylinder is pressurized to expel ether when fluid injection

solenoid is activated. Do not heat engine primer fluid cylinder or place it in fire.

Step 14.

Using 318-inch open-end wrench, unscrew tube (1) from elbow (2). Have assistant turn ignition lock

switch (3) clockwise to ignition if not already on, and press in and release engine starting aid

solenoid switch (4). Check to see if any fluid drains from tube (1).

a. If fluid drains from tube (1), go to step 15.

b. If fluid does not drain from tube (1), replace it as outlined in Engine Starting Aid Fluid Injection

Tube and Fittings (page 2-306).

Step 15.

Using 3/4-inch open-end wrench, unscrew and take spray nozzle holder (5) with assembled elbow

(2) and spray nozzle (6) out of air inlet (7). Screw tube (1) onto elbow (2) and tighten using 318-inch

open-end wrench. Have assistant press and release engine starting aid solenoid switch (4). Check

to see if fluid sprays from spray nozzle (6). Have assistant turn ignition lock switch (3)

counterclockwise to off.

a. If fluid sprays from spray nozzle (6), using 3/8-inch open-end wrench unscrew tube (1) and take

off of elbow (2). Screw spray nozzle holder (5) with assembled elbow (2) and spray nozzle (6)

into air inlet (7) and tighten using 3/4-inch open-end wrench. Screw tube (1) onto elbow (2) and

tighten using 3/8 inch open-end wrench. Go to Engine Malfunction 3. Engine Cranks But Fails

To Start Or Is Hard To Start Above 32F (O C) (page 2-39).

b. If fluid does not spray from spray nozzle (6), replace it as outlined in Engine Starting Aid Fluid

Injection Tube and Fitting (page 2-306).

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