Overhaul Manual
O-360 and IO-360 Series Engines
13
© March 2005 Superior Air Parts Inc.
72-00-13
Repair Procedures
REPAIR NO. 5
CRANKSHAFT OIL SEAL SURFACE
Crankshaft Oil Seal Flange Recondition
(1) If the crankshaft oil seal surface on the
shaft itself is damaged to the point that
the oil seal might leak, use the following
procedure to recondition this area.
WARNING: DO NOT DAMAGE THE NITRIDED
SURFACES OF THE CRANKSHAFT.
(2) Use crocus cloth to polish the oil seal
area of the shaft while the shaft is
rotated counterclockwise (viewed from
the front or flange end of the shaft). To
prevent the occurrence of spiral marks,
do not move the cloth while polishing.
The surface roughness of the oil seal
area should not exceed 8 microns.
Clean the shaft so that all traces of
debris are removed.
Preservation
Coat steel parts with preservative oil per MIL-L-
6529.
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