Table 8. Engine System (Unit) Troubleshooting Procedures - Continued.

TM 10-3930-660-24-1

TROUBLESHOOTING PROCEDURES - CONTINUED

0006 00

Table 8. Engine System (Unit) Troubleshooting Procedures - Continued.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

3. Check engine oil for

a. Check that the correct

12. Engine Lubricating Oil Pressure Too High -

viscosity too thick.

engine oil is being used.

Continued.

b. Replace engine oil if

necessary (WP 0012 00).

1. Check for external leaks.

Inspect engine for external oil

13. Engine Lubricating Oil Loss.

leaks.

2. Check crankcase for oil

Verify that the crankcase is not

overfill.

overfilled. Drain oil to correct

level, if necessary (WP 0011

00). Verify that the oil is at

correct mark on dipstick.

3. Check for turbocharger oil

Replace oil and lines or gaskets

leaking to the air intake.

as necessary (WP 0030 00 or WP

0031 00).

Refer to Test 23, Cooling System

1. Check for coolant in the

14. Contaminated Engine Lube Oil.

engine oil, internal engine

Troubleshooting, Coolant Loss

component leaks.

in this table.

2. Check for excessive engine

a. Replace engine oil and

oil sludge.

filter (WP 0012 00).

b. Check that the correct

engine oil is being used.

3. Check for fuel in the engine

If either condition is found,

oil, engine operating too

review vehicle operation for

cold.

excessive idling resulting in the

engine running below normal

temperature.

1. Check for intake air

a. Clean or replace air

15. Fuel or Oil Leaking From Exhaust

restriction.

cleaner filter element if

Manifold.

necessary (TM 10-3930-

660-10).

b. Review vehicle operation

for excessive idling.

2. Check for obstructed

Remove and clean turbocharger

turbocharger drain line(s).

drain line (WP 0030 00 or WP

0031 00).

3. Check turbocharger and

Replace turbocharger or gasket

gasket for leaking oil.

if necessary (WP 0026 00 or WP

0027 00).

0006 00-24