TM 10-4320-315-10
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5.
ENGINE OIL PRESSURE GAGE SHOWS LOW OIL PRESSURE.
Step 1.
Check oil dipstick to see if oil level is too low.
Add oil as required.
Step 2.
Check for loose wire and connections on oil sending unit sensor and oil gage.
Tighten loose connections. If still low oil pressure, notify unit maintenance.
6.
ENGINE OVERHEATING.
Step 1.
Check if air exhaust door is opened and air inlet openings are free of obstructions.
Open air exhaust door and remove obstructions.
Step 2.
Check if cooling air blower belt is damaged or broken.
Notify unit maintenance.
Step 3.
Check to see if cylinder cooling fins are clogged
Remove obstructions (para 3-7) Notify unit maintenance if engine still overheats.
7.
EXCESSIVE EXHAUST SMOKE.
Step 1.
Check to see if air filter gage is at 20.
Service air filter (para 3-6).
Step 2.
Check oil dipstick to see if oil level is too high.
Add oil. Refer to LO 10-4320-31 -12.
Step 3.
Check fuel line connections up to fuel injection pump.
Tighten connections Notify unit maintenance if still excessive exhaust smoke.
8.
PUMP SUCTION AND DISCHARGE GAGES SHOW LOW PRESSURE.
Step 1.
Check to see if butterfly valve in suction line is fully opened.
Open valve.
Step 2.
Stop engine and check priming of pump
Prime pump (para 2-7).
Step 3.
Check that gage valve on pump discharge housing is fully open.
Open gage valve.
3-3
