Table 5. Engine Troubleshooting Procedures - Continued.

TM 9-2320-312-10

TROUBLESHOOTING PROCEDURES - CONTINUED

0010 00

Table 5. Engine Troubleshooting Procedures - Continued.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

4. Engine Does Not Idle Properly.

Check air

cleaner

restriction If yellow band has risen to red

indicator.

area on gauge, service engine air

cleaner (WP 0015 00).

5. Engine Fails to Crank.

1. Check position of transmission Range selector should be in N

range selector.

(Neutral) position.

2. Attempt to start engine using Turn ignition switch to ON, place

emergency start switch (WP emergency start switch in (ON)

0004 00).

position, then start engine.

3. Ensure battery disconnect Place switch in ON position.

switch is in ON position.

4. Ensure ignition system 25A Reset circuit breaker.

circuit breaker is not tripped

(located in top left corner of

battery box above NATO slave

receptacle).

5. Check for loose or broken If cables are loose or broken,

battery cables.

notify Unit Maintenance.

6. Engine Starts But Misfires or Runs Rough 1. Check air cleaner restriction If yellow band has risen to red area

After Proper Warmup Period.

indicator.

on gauge, service engine air

cleaner (WP 0015 00).

2. Check fuel/water separator for Drain fuel/water separator (WP

water or sediment in sediment 0012 00).

bowl.

7. Engine Turns Over Very Slowly, RPM's Too Check for loose or broken battery If loose or broken cables are found,

Slow to Start.

cables.

notify Unit Maintenance.

8. Excessive Engine Oil Consumption.

Check for loose oil lines and oil If oil lines are loose or leaks are

leaks.

found, notify Unit Maintenance.

9. Excessive Exhaust Smoke (at Normal Engine 1. Check air cleaner restriction If yellow band has risen to red area

Operating Speed).

indicator.

on gauge, service engine air

cleaner (WP 0015 00).

2. Check fuel/water separator for Drain fuel/water separator (WP

water or sediment in sediment 0012 00).

bowl.

10. Low or No Engine Oil Pressure.

Check engine oil level.

If engine oil is low, fill to correct

level (WP 0011 00 and WP 0012

00).

0010 00-5