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Trouble
Possible Cause
Low Oil Pressure
1.
Oil leaks
(unit shut-down)
2.
Low oil level or
incorrect grade
3.
Faulty oil pressure
switch
4.
Clogged oil filter
5.
Clogged oil pump
strainer
6. Worn or fatigued
oil pressure relief
valve spring
7.
Faulty electrical
circuit
Checking Oil Pressure with Mechanical
1.
Remove the oil pressure
sender
and
connect
a
mechanical
oil
pressure gauge instead.
2.
Electrically jump the oil pres-
sure switch connections.
3.
Start
the
engine,
operate
at
1800
RPM
and
allow engine
to
warm up.
4.
Measure the oil pressure.
If
less
than
the
specification,
check the lubricating system.
Gauge
1.
2.
3.
4.
5.
6.
7.
Oil pressure:
1.75 - 2.5 kg/cm 2 + .7 kg/cm 2
(25 - 35 PSI + 5 lb/in 2 )
Remedy
Refer to above.
Add oil to proper
level or change.
Test and replace.
Remove and replace oil
filter.
Remove and clean.
Remove and replace.
Check circuit and
repair as needed.
NOTE:
Insure proper oil is being used that meets temperature
requirements and the A.P.I. Spec. of SE or SE/CC.
62
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