TM 5-3805-280-24-1
System Operational Checks
ENGINE OIL CONDITION
Remove dipstick and check oil condition.
YES: Change oil and
CHECK
filter. Check condition of
Is oil milky or grainy?
oil after a few hours
operation to determine if
a problem exists. Go to
If oil is milky, moisture or anti-freeze may be present.
Group 9000-04 or
Diagnose Engine
If oil is grainy, carbon may be present.
Malfunctions Group
9010-15.
Carbon in oil may result when engine runs at slow idle too long.
NO: Go to next check.
9010
10
10
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ENGINE OIL PRESSURE
D--Engine Oil Pressure Indicator
YES: Go to next check.
SWITCH AND
INDICATOR CHECK
Turn key switch from OFF to ON and observe engine oil
NO: Stop engine if engine
pressure indicator.
oil pressure indicator
remains ON after engine
starts. Go to Group
Does indicator (D) come ON and stay ON?
9010-15 Diagnose Engine
Malfunctions or Engine
Start engine and observe engine oil pressure indicator.
Repair chapter. If engine
oil pressure indicator
Does indicator go OFF a few seconds after engine
does not come ON, go to
starts?
Group 9015-10 Monitor
Circuit Diagnostic
Procedures.
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