TM 9-2320-387-24-l
ENGINE LUBRICATION
L
KNOWN INFO
I
NONE
POSSIBLE
PROBLEMS
OIL
OIL FILTER
LEAKS
ENGINE PROBLEMS
OIL PRESSURE SENSING
SYSTEM
KNOWN INFO
I
OIL OK
FILTER OK
POSSIBLE
PROBLEMS
LEAKS
ENGINE PROBLEMS
1
OIL PRESSURE SENSING
SYSTEM
KNOWN INFO
OIL LEVEL AND TYPE OK
FILTER OK
NO OIL LEAKS
POSSIBLE
PROBLEMS
OIL PRESSURE GAUGE
OIL PRESSURE SENSOR
ENGINE PROBLEMS
IS THE CRANKCASE FILLED
TO THE CORRECT LEVEL
WITH OIL THAT IS CLEAN
AND OF THE RIGHT TYPE,
AND IS THE OIL FILTER CLEAN?
DIAGNOSTIC FLOWCHART
-
r OPTIONS
1
CHECK DIPSTICK.
SEE TABLE 2-l. (Page 2-22)
FOR OIL AND FILTER CHANGE
REQUIREMENTS.
REASON FOR QUESTlON
To make sure the engine has the
right oil, and its dean.
IS THE VEHICLE FREE FROM
LARGE OIL LEAKS?
T OPTfONS
CHECK THE LIST OF
D-EMS TO THE RIGHT.
REASON FOR QUESllON
Any large oil leaks could affect oil
pressure. Small leaks should be
IS THE OIL PRESSURE AT THE
CORRECT VALUE?
(SEE CHART AT RIGHT.)
1 TE!
I
ST OPTlONS
1. STEIICE-R TEST 50 (Page 2-495)
INTERLEAVED
WITH RPM.
2. LOOK AT THE GAUGE AND USE
STEIICE-R TEST 10 (Page 2-490).
REASON FOR QUESTlON
Low oil pressure will cause excessive
wear on the engine. High pressure
could indicate clogs in the system. If
you use the gauge, you can let
the engine run a few minutes to
make sure the gauge is OK.
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