TM 5-1940-322-24
0006 00
MECHANICAL SYSTEMS TROUBLESHOOTING (Contd)
Table 1. Engine Troubleshooting Procedures (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Check oil level.
6. ENGINE OIL
PRESSURE LOW
2. Check oil pressure sending units or
Replace malfunctioning oil pressure
gauge for malfunction.
3. Check for plugged oil filter.
4. Check engine oil pump for
malfunction.
1. Turn audible alarm off.
Refer to TM 5-1940-322-10 for location
7. ENGINE OIL
of switch.
PRESSURE LOW
2. Check oil level.
(AUDIBLE ALARM
COMES ON) (LOW
3. Check oil filter element.
1. If oil filter is damaged, replace
GAUGE READING)
4. Check oil lines and filters.
Tighten all oil line connections and
filter.
5. Check oil pressure sending unit.
If oil pressure sending unit is
6. Check water in header tank for oil
If oil is present in header tank,
film as evidence of oil cooler leak.
replace lubricating oil cooler
7. Check engine oil pump for
malfunction.
1. Check engine oil level.
8. SUDDEN LOSS OF
OIL PRESSURE
2. Check engine for oil leaks while
1. If oil leak is present, determine
running.
location.
2. Repair oil leak as necessary.
3. Check oil pressure sending unit for
If oil pressure sending unit is
malfunction.
4. Check for oil pressure at engine
If no pressure present, perform Step 5.
block with mechanical gauge.
5. Check engine oil pump for
malfunction.