Section 03
ENGINE
Sub-Section 02
(LEAK TEST)
03-02-6
ENGINE LEAKAGE DIAGNOSTIC FLOW CHART
F00D07S
PRESSURIZE ENGINE
IS ENGINE LEAKING?
CHECK ALL JOINTED SURFACES,
SCREW/STUD THREADS. MOUNTING
FLANGES ETC.
ANY LEAK FOUND?
CHECK SMALL OIL LINES OF
INJECTION PUMP
AIR BUBBLES FOUND
OR OIL MOVING
TOWARD PUMP?
BLOCK LARGE HOSES OF
ROTARY VALVE GEAR
LUBRICATION SYSTEM
IS ENGINE STILL LEAKING?
ARE SEALS LEAKING?
CHECK CRANKSHAFT OUTER
SEAL OF PTO AND
MAG SIDES
UNSEAL PTO CYLINDER AND MAG CYLINDER
SEPARATELY BY REMOVING THE
APPROPRIATE SPARK PLUG
IS RESERVOIR LEAKING?
CHECK FOR LEAKAGE AT ROTARY
VALVE SHAFT CRANKCASE PLUG
ANY LEAK FOUND?
REMOVE ROTARY VALVE COVER, CHECK
SEAL OF ROTARY VALVE SHAFT
IS SEAL LEAKING?
CAREFULLY INSPECT ENGINE CASTINGS,
PARTICULARLY THE THREADED HOLE AREAS
YES
YES
NO
PRESSURIZE ENGINE
COOLING SYSTEM
IS SYSTEM LEAKING?
CHECK TESTING KIT
REPLACE O-RING OF CYLINDER HEAD
AND/OR CYLINDER BASE GASKET
YES
YES
NO
CHECK TESTING KIT
IS RESERVOIR LEAKING?
PRESSURIZE ROTARY VALVE GEAR
RESERVOIR IN CRANKCASE
REPLACE GASKET OR O-RING,
RE-SEAL LEAKING AREA
REPLACE CHECK VALVE(S) / LINE(S)
PRESSURIZE ROTARY VALVE GEAR
RESERVOIR IN CRANKCASE
IS RESERVOIR LEAKING?
REPLACE DEFECTIVE SEAL(S)
REPLACE DEFECTIVE SEAL(S)
REPLACE OIL SEAL OF ROTARY
VALVE SHAFT END, OR
REPLACE CAP
REPLACE DEFECTIVE SEAL
REPLACE DEFECTIVE PARTS
NO
YES
YES
YES
YES
YES
NO
ANY LEAK FOUND?
ENGINE IS PERFECTLY SEALED
INTERNALLY
RECHECK ENGINE SEALING
CHECK TESTING KIT
RECHECK ENGINE SEALING
CHECK TESTING KIT
NO
NO
NO
YES
YES
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Содержание 1997 GSI
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