Overhaul Manual
O-360 and IO-360 Series Engines
(17) Lay a single line of silk thread on the
RTV sealant at the centerline of the
sealing surface and loop the inside of
each bolt hole. The tail of the thread
should extend beyond the mating
surface approximately 0.25 in. to the
accessory gasket surface at the rear,
the nose seal surface at the front and
the sump gasket surface at the bottom.
Refer to Figure 72-00-09.13.
(20) Check thread and nose seal (15, Figure
72-00-09.2) for proper placement.
(21) Install camshaft in left case half and
have helper hold in place.
(22) Mate the right case half to the left case
half by carefully aligning rear through
studs and front 3/8 in. nose bolts.
NOTE:
NOTE: Care should be taken not to
push out the 3/8 in. nose bolts (5,
Figure 72-00-09.11) causing the o-
rings (10) to fall out.
(18) A helper places the left case half up to
the crank assembly with the connecting
rods protruding through their appropriate
cylinder holes and allows the assembler
to align the front main bearing inserts
with the dowels in the crankcase. The
helper uses light pressure against case
half as the assembler adjusts front main
bearing until it snaps in place.
(23) Ensure that nose seal is properly in
place.
(24) Install backbone bolts (30), breastbone
bolts (90, 95), and nose bolts (5) with
appropriate hardware. Snug all
uniformly. Check for free case to crank
rotation.
NOTE:
Using a tool to gently lift up on bearing
while holding case half-tight to
crankshaft will aid in determining if
bearing is properly seated. When
properly seated, the bearing and case
will move slightly up and down
together as the front of the bearing is
pried up and down.
WARNING
: LUBRICANTS ARE TOXIC AND
FLAMMABLE. DO NOT BREATHE VAPORS.
BEFORE YOU USE, READ THE MATERIAL
SAFETY DATA SHEET (MSDS) FROM THE
MANUFACTURER OR SUPPLIER. USE IN A
WELL VENTILATED AREA FREE FROM
SPARKS. WEAR PROTECTIVE GEAR. 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.
(19) With the left case half and bearing
properly seated, the helper places a tool
inserted through the #4 connecting rod
piston pin hole. The case is rotated to
wedge the tool against the case half.
Firm pressure is maintained on
crankcase. Refer to Figure 72-00-
09.14.
(25) Lightly lubricate shank and threads of
the ½ in. Dia. through bolts (1, Figure
72-00-09.12), with pre-lube oil. Install
using a soft faced (dead blow) hammer
as far as possible. Finish installation
with sufficiently sized ball-peen hammer
or equivalent using a nut or threaded
cap to protect the threads and thru-bolt
end. Thru bolts are properly installed
when an equal number of threads
protrude from each case half.
NOTE:
It is imperative that the helper
maintains constant pressure on the left
case half throughout the assembly
process until case halves are snugged
together. Enough case assembly
hardware must be installed to not
allow the front main bearing to shift
from the locating dowels.
11
© March 2005 Superior Air Parts Inc.
72-00-09
Engine Assembly
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