DSG-423 GENERAL INFORMATION
01-11
• crankshaft front seal
• crankshaft rear oil seal
Leakage Points - with Flywheel Removed
NOTE: Air leakage in the area around a crankshaft rear
oil seal does not necessarily indicate a crankshaft rear
oil seal leak. However, if no other cause can be found
for oil leakage, assume that the crankshaft rear oil seal
is the cause of the oil leak.
NOTE: Light foaming equally around valve cover bolts
and crankshaft seals is not detrimental; no repairs are
required.
• rear main bearing cap and seals
• flywheel mounting bolt holes (with flywheel installed)
• camshaft rear bearing covers or pipe plugs at the
end of oil passages (except for overhead cam)
Oil leaks at crimped seams in sheet metal parts and
cracks in cast or stamped parts can be detected when
pressurizing the crankcase.
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