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LOW OIL LEVEL
CLOGGED OIL STRAINER
DEFECTIVE OIL PRESSURE
REGULATING VALVE
WORN OUT OIL PUMP
OIL PUMP SUCKING AIR DUE TO GASKET
FAILURE
DEFECTIVE OIL PRESSURE GAUGE
INCORRECT FLYWHEEL ROTATION
FILL CRANKCASE TO FULL MARK.
REMOVE AND CLEAN OIL STRAINER.
‘B’, ‘C’, ‘D’, ‘E’ AND ‘V’ BLOCKS: REMOVE REGULATING VALVE
ADJUSTING SCREW, SPRING AND BALL. CHECK FOR WEAK OR
BROKEN SPRING OR DAMAGED SEAT. REPLACE OR REPAIR AS
NECESSARY.
‘F’ BLOCK: REMOVE OIL PUMP AND INSPECT REGULATING VALVE
PLATE, SPRING, AND SEAT. REPLACE OR REPAIR DAMAGED PARTS
AS NECESSARY.
REPLACE OIL PUMP.
CHECK GASKET OR SEAL IN OIL PICKUP LINE. REPLACE AS
NECESSARY.
CHECK GAUGE AND REPLACE AS NECESSARY.
CHECK THAT THE FLYWHEEL FAN IS CLOCKWISE WHEN VIEWED
FROM THE OIL PUMP END, IF NOT, CHECK WITH A COMPETENT
ELECTRICIAN TO SEE IF THE MOTOR ROTATION CAN BE CHANGED
BY RECONNECTING THE MOTOR LEADS.
TOUBLESHOOTING CHART (cont’d)
LOW OR NO OIL PRESSURE
DIRTY COOLING SURFACES
INADEQUATE VENTILATION
LEAKING SECOND STAGE VALVES
CAUSING HIGH FIRST STAGE AIR
PRESSURES
RESTRICTION IN AIR LINES
CLEAN THE COOLING SURFACES OF THE CYLINDER HEAD,
CYLINDERS, INTERCOOLER AND AFTER COOLER INCLUDING ANY
WATER PASSAGEWAYS.
RELOCATE THE COMPRESSOR TO A MORE SUITABLE AREA
HAVING CLEAN, DRY, COOL AIR WITH GOOD VENTILATION. AIR
COOLED COMPRESSORS SHOULD NOT BE LOCATED IN HOT OR
HIGH HUMIDITY AREAS.
CHECK FOR LEAKING VALVES OR VALVE GASKETS ON SECOND
STAGE. CORRECT AS NECESSARY.
CHECK DISCHARGE PIPING AND INTERCOOLER FOR DAMAGE TO
LINES CAUSING RESTRICTION IN AIR FLOW.
OVERHEATING
PROBABLE CAUSE
SUGGESTED REMEDY
PROBABLE CAUSE
SUGGESTED REMEDY
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