ENGINE CRANKS BUT FAILS TO START OR IS HARD TO START BELOW 32F (0C) (cont) -624880095

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

2. 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.

b. If connection at connector (1, 2, or 3) is loose, push connector (4, 5, or 6) on all the way.

c. If connector (1, 2, or 3) or connector (4, 5, or 6) is corroded, clean using wire brush.

d. If connection at connector (1, 2, or 3) or connector (4, 5, or 6) is frayed or broken, repair (page 2-

137).

Step 7.

Using multimeter set to 30 vdc scale, place red probe on connector (2 or 3) and black probe on box

(7). Turn ignition lock switch (8) clockwise to ignition. Check for 11 to 13 vdc on multimeter.

a. If multimeter reads 11 to 13 vdc, go to step 8 or 9.

b. If multimeter reads less than 11 vdc, turn ignition lock switch (8) counterclockwise to off and

repair wire from connector (2 or 3) to starter switch (9) (page 2-137).

NOTE

The following step only applies to loader backhoes with Serial Numbers 319995 thru 342573.

Step 8.

Using multimeter set to 30 vdc scale, place red probe on connector (1) and black probe on box (7).

Check for 11 to 13 vdc on multimeter.

a. If multimeter reads 11 to 13 vdc, go to step 9.

b. If multimeter reads less than 11 to 13 vdc, turn ignition lock switch (8) counterclockwise to off

and repair wire between, wire harness connectors (3 and 4) (page 2-137).

2-34