TM 5-3805-248-23-1
ENGINE, EXHAUST AND COOLING SYSTEM TROUBLESHOOTING PROCEDURES - CONTINUED
0009 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
14. Low Oil Pressure.
WARNING
Hot oil or metal parts can cause severe burns. Wear insulated gloves, long
sleeves and eye protection when working with heated parts. Failure to follow
this warning may cause injury.
Compressed air used for cleaning or drying purposes, or for clearing restric-
tions, should never exceed 30 psi (207 kPa). Use protective equipment and exer-
cise caution to avoid injury to personnel.
1.
Check oil lines for cracks, splits,
1. Tighten loose fittings and connections.
leaks, damage and obstructions.
2. Replace oil lines that are cracked, split
or damaged (WP 0027 00).
3. Clear clogged or obstructed lines with
compressed air.
4. Go to Test 2.
2.
Inspect oil filter for leaks or blockage.
1. Tighten oil filter (WP 0022 00).
2. If leaking continues, service oil filter
3. If oil filter is OK, go to Test 3.
3.
Check for fuel in engine oil.
1. Drain engine lubricating oil, install new
oil filter and refill crankcase (WP 0035
2. Go to Test 4.
4.
Substitute a known good gage for the
1. If oil pressure is normal, gage was at
suspected oil pressure gage (WP 0249
fault.
2. If oil pressure is still low, go to Test 5.
5.
Inspect lubrication oil pump.
Replace oil pump (WP 0267 00).
