LOW OIL PRESSURE.

TM 9-2815-224-34&P

Troubleshooting Malfunctions (Cont)

Table 2-3. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ENGINE (CONT)

OVERHEATS (CONT)

Step 2. Check water pump impeller for looseness. Drain coolant below level of water pump

(TM 9-2320-279-20), remove retaining ring (1), pump cover (2) and preformed packing (3).

Try to move impeller in and out to detect play indicating worn bearings, gears, or seal.

Remove damaged water pump (para 17-2).

Repair water pump (para 17-2).

Inspect engine aftercooler for leaks.

Step 3.

Remove aftercooler from engine (para 16-2).

Replace aftercooler if leaks are detected (para 16-2).

LOW OIL PRESSURE.

Check for clogging of oil pump inlet screens. Remove oil pan (para 8-3).

Step 1.

Remove and clean oil pump inlet screens (para 8-4).

Replace damaged screens (para 8-4).

Step 2. Inspect oil pressure regulator valve for clogging or damage.

Remove and clean oil pressure regulator valve (para 8-7).

Inspect valve, valve seat, and valve spring for damage.

Replace damaged parts (para 8-7).