Overhaul Manual
O-360 and IO-360 Series Engines
Idler gears and shaft removal
(1) Remove idler gears (15,20, Figure
72-00-09.20). Remove idler shaft
mount screws (5) and nut (10).
Remove idler shafts (1) from
crankcase.
Starter and alternator attaching hardware
removal
(1) Remove starter mount bolt (15,
Figure 72-00-09.42), nuts (20),
lockwashers (10), and flat washers
(5). Remove starter (1) from
crankcase.
(a) Remove alternator mount bolt
(10, Figure 72-00-09.43) and
washer (5) to loosen drive belt.
Remove cotter pin (45), slotted
nut (40), support bolt (25), and
shims (35). Remove cotter pin
(45), slotted nut (40), shims
(35), and support bolt (30).
Remove bolts (20, 90) and flat
washers (15, 85) from strut
bracket (80). Remove strut
support (80) and remove
alternator.
(b) Remove alternator bracket (55)
by removing bolts (60) and lock
plate (50). Remove bolt (75),
flat washer (70), and adjusting
link (65). Visually inspect
hardware and bag for reuse if
not damaged.
Oil sump and induction disassembly
(1) Remove screws (25, Figure 72-00-
09.29), lockwashers (20), and flat
washers (15) from intake pipe flange
(10). Discard gaskets (1).
(2) Remove clamps (35), intake hoses (30),
and intake tubes (5) from oil sump
assembly.
(3) Remove oil screen plug (85, Figure 72-
00-09.27), discard gasket (80), and
remove oil suction screen (75). Inspect
for debris.
(4) Remove bolts (15,20), flat washers (25,
30), lockwashers (25), and nuts (35)
from sump assembly flange. Discard
gasket (11) and remove intake
connection pipes (12) from sump
assembly.
Cylinder drain tubes removal
(1) Loosen hose clamps (85, Figure 72-00-
09.17) on hose (80) at drain nipple (75).
Slide away from drain nipple (75).
Loosen gland nut at cylinder head fitting
and remove tube assembly (90) from
cylinder.
Intercylinder cooling baffle removal
(1) Remove the intercylinder cooling baffles
(1, Figure 72-00-09.26) using
intercylinder baffle tool. Turn the baffle
retaining hook (10) so that it disengages
the retainer (5). Remove the baffle (1)
and hook (10) from between the
cylinders.
Cylinder removal
(1) Remove the valve cover screws (130,
Figure 72-00-09.15) and cover (125)
and discard gasket (120). Rotate the
crankshaft to place the piston of the No.
1 cylinder at top center of the
compression stroke.
NOTE:
With the piston in this position both
valves will be closed and the piston
extended away from the crankcase to
avoid damage when the cylinder is
removed.
(2) Remove the valve rocker shaft caps
(20), the valve rocker shaft (15), valve
rocker arms (5), and the exhaust valve
stem cap (115) from cylinder assembly.
Remove the pushrod (1) by grasping the
rod end and pulling it through the rod
tube (40). Remove nut (60), spring (55),
and lockplate (50). Pull rod tube
through cylinder head and discard tube
seals (35, 45).
(a) Remove cylinder assembly by
removing nuts from cylinder base.
Remove cylinder by pulling straight
away from crankcase. As the
cylinder is being pulled away, hold
the piston to prevent damaged.
Discard cylinder base seal.
CAUTION
: THE CONNECTING ROD MUST BE
SUPPORTED TO PREVENT DAMAGE TO THE
ROD AND CRANKCASE. SUPPORT EACH
4
© March 2005 Superior Air Parts Inc.
72-00-06
Engine Disassembly