Table 2-1. Direct Support and General Support Troubleshooting Table

TM5-241O-237-34

Table 2-1.

Direct Support and General Support Troubleshooting Table (Cont'd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 3.

Inspect crankshaft bearing surfaces (journals) for connecting rods

Repair or replace crankshaft, if necessary (page 3-44).

Step 4.

Inspect crankshaft (page 3-43).

Repair or replace crankshaft, if necessary (page 3-43).

END OF TESTING!

7. ABNORMAL NOISE FROM VALVE MECHANISM (CLICKING SOUND)

Step 1.

Check valve clearance (TM5-241O-237-2O).

Adjust valves, if necessary (TM5-241O-237-2O).

Step 2.

Inspect valve mechanism (page 3-95).

Replace damaged components, if necessary (page 3-95).

Step 3.

Check lubrication flow at valve mechanism. There must be a strong flow

of oil at high engine rpm and a small flow at low rpm.

If there is a low flow of oil, clean oil passages in the cylinder block.

Step 4.

Check valve springs and locks (page 3-30). Damaged or worn locks can cause

valve to fall into cylinder resulting in serious engine damage.

Replace damaged or worn valve spring and/or locks (page 3-30).

Step 5.

Inspect valves (page 3-30).

Replace defective valve(s), if necessary (page 3-30).

Step 6.

Inspect camshaft (page 3-104).

Replace camshaft, if necessary (page 3-104).

END OF TESTING!

8. EXCESSIVE OIL CONSUMPTION

Step 1.

Check for oil at inlet manifold-to-turbocharger connection.

If oil is present, repair (page 4-18) or replace turbocharger (TM5-2410-

237-20).

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