Section 03 787 RFI ENGINE
Subsection 01 (LEAK TEST)
Remove PTO side spark plug. If pressure drops,
it indicates a defective PTO side crankshaft inner
seal or crankcase is not sealed correctly.
Remove MAG side spark plug. If pressure drops,
it indicates a defective MAG side crankshaft inner
seal or crankcase is not sealed correctly.
If the above mentioned components are not leak-
ing and there is a pressure drops, remove the ro-
tary valve cover. Check the seal of the rotary valve
shaft.
If the rotary valve shaft is not leaking, it could
indicates a defective engine casting. Disassem-
ble engine and carefully check for defects in cast-
ings. Payattentiontotappedholeswhichmaygo
through sealed areas of engine and thus lead to
leakage.
62 smr2005-080
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