TM 5-3810-306-34
TABLE 3-1. DIRECT AND GENERAL SUPPORT TROUBLESHOOTING (CONTD)
Malfunction
Test or Inspection
Corrective Action
Step 6.
Defective lube oil pump.
a. Remove and inspect lube oil pump. (Refer to page
b. Replace lube oil pump.
Step 7.
Loose main bearing cap.
a. Check main bearings and caps. If OK, do S tep 8.
b. Install new main bearings and tighten caps. (Refer to
Step 8.
Worn crankshaft bearings.
a. Check crankshaft bearings for wear.
b. Replace crankshaft bearings. (Refer to page 4-24.)
Check and replace piston cooling nozzles if damaged.
(Refer to page 4-24.)
8. LUBRICATING OIL PRESSURE TOO HIGH
Step 1.
Oil pressure relief valve stuck closed.
a. Remove and inspect oil pressure relief valve. (Refer
to page 4-62.)
b. Clean or replace valve.
3-9
