Superior IO-360 SERIES Overhaul Manual

Overhaul Manual
O-360 and IO-360 Series Engines
9
© March 2005 Superior Air Parts Inc.
72-00-13
Repair Procedures
REPAIR NO. 3
CRANKSHAFT OR CRANKPIN REPAIR
Repairs
Measure crankshaft main and crankpin journals.
(1) Determine if the components in question
are standard or undersize bearing
journals. Determine this information
prior to beginning any polishing or
grinding operation.
(2) Measure the OD of the crankshaft main
and rod bearing journals and compare
results to the limits shown in the Fits
and Clearances section of this manual.
If dimensions do not fall within specified
limits, the shaft must be brought to
undersize.
(3) Check the crankshaft flange for a code
symbol stamped as a suffix to the part
number. Possible code symbols are:
M03MP (main and crankpin journals
0.003 in. undersize); M03M (main
bearing journals 0.003 in. undersize);
M03P (crankpin bearing journals 0.003
in. undersize).
If the maximum service limits are
exceeded, standard shafts may be
polished to 0.003 in. undersize and fitted
with 0.003 in. undersize bearing inserts.
CAUTION
: DO NOT ALLOW LATHE SPEED TO
EXCEED 150 RPM DURING ANY POLISHING
OPERATION.
Polish crankshaft or crankpin journals as
needed to reestablish proper fits and
clearances. Refer to Fits and
Clearances section of this manual for
size limits.
WARNING
: DO NOT DAMAGE THE NITRIDED
SURFACES OF THE CRANKSHAFT.
WARNING
: IF ONE SURFACE IS POLISHED
TO UNDERSIZE, ALL CORRESPONDING
SURFACES MUST BE POLISHED TO THE
SAME SIZE.
WARNING
: USE THE CORRECT PERSONAL
PROTECTION. POLISHING WILL CAUSE
LOOSE PARTICLES THAT CAN GET IN
YOUR EYES.
NOTE:
Main bearing surfaces may be
polished without affecting crankpin
surfaces and likewise, the crankpin
bearing surfaces may be polished
without affecting the main bearing
surfaces.
Inspection After Resurface Procedure
(1) Upon completion of the polishing
procedure, thoroughly clean the part. Buff
the surface to a high finish.
(2) After polishing operation, clean the part and
perform a complete magnetic particle
inspection of the shaft or pin. If any cracks
or checks are found, the part must be
rejected.
(3) Coat the clean surfaces of approved parts
with preservative oil and store until ready
for reassembly.
WARNING
: USE CORRECT PERSONAL
PROTECTION. SOME CHEMICAL
SOLUTIONS CAN CAUSE SKIN, EYE AND
LUNG DAMAGE. FOLLOW THE
MANUFACTURER'S INSTRUCTIONS FOR
EACH CLEANING SOLUTION.

Superior IO-360 SERIES Specifications

General

Brand	Superior
Model	IO-360 SERIES
Category	Engine
Language	English