Overhaul Manual
O-360 and IO-360 Series Engines
Cylinder Barrel Dimensional Inspections
Visually inspect cylinder barrel dimensions.
Refer to Figure 72-00-08.4.
Fit between piston
skirt and cylinder
Refer to Fits
and
Clearances
Maximum taper of
cylinder walls
Refer to Fits
and
Clearances
Maximum out of
roundness
Refer to Fits
and
Clearances
Bore diameter
Refer to Fits
and
Clearances
•
•
•
•
NOTE:
All cylinder barrel diameter
measurements must be taken at a two
(2) locations, 90 degrees apart at the
plane specifically being measured.
Cylinder Assembly Inspection
Perform a fluorescent dye penetrant inspection
of the cylinder head.
•
•
•
•
•
Cracks Reject
Piston Inspections
Visually inspect piston general condition. Refer
to Figures 72-00-08.5 and 72-00-08.6.
Inspect the top of
the piston for
excessive pitting,
cavities or surface
distortion.
Reject
Inspect the piston
lands, piston pin
holes, and bosses
for excessive wear
or damage.
Reject
Inspect the piston
ring in grooves
clearances in
excess of limits.
Refer to Fits
and
Clearances
Piston Dimensional Inspections
Inspect pistons for correct dimensions. Refer to
Figure 72-00-08.5.
Side clearance
between piston and
ring
Refer to Fits
and
Clearances
NOTE:
These pistons are ground with a slight
taper from the skirt to the head. The
exception is the lands between the top
compression and oil control rings,
which are ground parallel. The
clearance on wedge type compression
rings must be measured with ring flush
to outside edge of piston as shown in
Figure 72-00-08.6 in order to obtain a
true check of the side clearance.
Inside diameter of
piston pin hole
Refer to Fits
and
Clearances
•
NOTE:
No pitting or corrosion is permitted in
this area.
Clearance between
piston skirt and
cylinder and piston
diameter at top and
bottom
Refer to Fits
and
Clearances
•
7
© March 2005 Superior Air Parts Inc.
72-00-08
Inspection and Check
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