Superior IO-360 SERIES Overhaul Manual

Overhaul Manual
O-360 and IO-360 Series Engines
(8) Verify piston ring (40, 45) part numbers.
Cylinder Assembly Inspection
(9) Check ring gaps of compression rings
(45, Figure 72-00-09.6) and oil control
ring (40) with feeler gauge. End gap at
1”-4” from flange and gap at top of
piston stroke must be within limits per
Fits and Clearances section of this
manual.
(1) Verify cylinder part number and serial
number.
(2) Visually inspect general condition of
cylinder for handling or shipping
damage.
(3) Verify the valve, spring, and key (65, 70,
85, 90, 105, 110, Figure 72-00-09.15)
installations.
(10) Insert piston rings, one at a time in their
respective grooves.
(4) Visually check threaded holes for thread
integrity and helical coil insert if
required. Ensure the absence of foreign
matter.
(11) Using a ring expander, install rings to
piston with the lower ring first, then
middle and top.
NOTE:
Numbers on the ring face indicate top
of the piston or up.
WARNING
: SOLVENT IS TOXIC. USE IN
WELL-VENTILATED AREA. PREVENT EYE
AND SKIN CONTACT AND DO NOT
BREATHE VAPORS IN CASE OF EYE
CONTACT, FLUSH WITH WATER FOR 15
MINUTES AND SEEK MEDICAL ATTENTION.
IN CASE OF SKIN CONTACT, WASH WITH
SOAP AND WATER.
(12) Check side clearance of each ring.
Piston compression ring (45) in top
groove is 0.0025 to 0.0055 in. Piston
compression ring (45) in 2nd groove is
0.000. to 0.0040 in. Piston oil control
ring (40) in 3rd groove is 0.0020 to
0.0040 in.
(5) Wipe cylinder bores clean with lint-free
rag saturated with fast dry solvent.
(6) Inspect piston (30, Figure 72-00-09.6)
part number and weight.
NOTE:
Piston weight differences should not
exceed 2 grams in opposing pairs.
(7) Clean piston pins (35) with fast dry
solvent and check fit to each piston.
NOTE:
Piston pins are a push fit with light
lubrication. Refer to Figure 72-00-
09.16.
NOTE:
Side clearance is checked with ring in
its respective groove and flush with
outside edge of piston.
21
© March 2005 Superior Air Parts Inc.
72-00-09
Engine Assembly

Superior IO-360 SERIES Specifications

General

Brand	Superior
Model	IO-360 SERIES
Category	Engine
Language	English