Overhaul Manual
O-360 and IO-360 Series Engines
22
© March 2005 Superior Air Parts Inc.
72-00-13
Repair Procedures
Intake valve face grinding
CAUTION: DO NOT ATTEMPT TO BEND OR
STRAIGHTEN THE VALVE FACE OR STEM.
NOTE:
Intake valves require replacement at
overhaul.
NOTE:
Refer to Figure 72-00-13.7.
1) Intake valve faces that have minor pitting or
warping may be refaced by grinding.
WARNING
: USE THE CORRECT PERSONAL
PROTECTION. POLISHING AND GRINDING
WILL CAUSE LOOSE PARTICLES THAT CAN
GET IN YOUR EYES.
(a) Set the valve refacing equipment to
30° for intake valves. Use a soft
#80 grit wheel to grind only enough
of the valve face to remove small
pits.
(b) Round off any burrs or sharp edges
with a polishing stone while the
valve is still turning in the refacing
equipment.
2) After grinding and cleaning, the valve stem
may be polished to remove superficial
scratches.
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