Overhaul Manual
O-360 and IO-360 Series Engines
Put the cup side out (flat side against
plunger). Refer to Figure 72-00-09.15.
Installation of Pushrod Tubes, Pushrods, and
Rocker Arms
(1) Visually inspect the pushrod tubes (40,
Figure 72-00-09.15) for handling
damage, dents, or burrs. Check I.D. of
each tube for debris.
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.
(2) Apply a light coat of Fuelube™ or
equivalent to 8 O-ring seals (45) and 8
bottom tube seals (35). Install O-rings
to pushrod tube (40) at top groove
locations.
(3) Insert pushrod tubes through holes at
the top of each cylinder then install
bottom seal (35). Seat each tube into its
crankcase lifter hole using a rotary or
twisting motion. Ensure that o-ring seal
and bottom seal are properly seated.
(4) Install spring clip (50) over stud in
cylinder and over the edge of each
pushrod tube.
(5) Secure spring clip with lock plate (55)
and 0.25 in. nut (60).
(6) Torque nut (60) to 50-70 in-lbs. Bend
lock tab with screwdriver or pliers to
secure nut.
(7) Inspect pushrods for bends or damage.
(a) Blow clean, dry air through each
pushrod (1).
(b) Visually inspect I.D. of each pushrod
to verify each is clear, clean, and
open.
WARNING
: WHEN YOU USE COMPRESSED
AIR TO CLEAN OR DRY PARTS, MAKE SURE
THAT THE PRESSURE IS NOT MORE THAN
30 PSI. DO NOT DIRECT THE AIRSTREAM
AT PERSONNEL OR LIGHT OBJECTS. PUT
ON GOGGLES OR A FACE SHIELD TO
PROTECT YOUR EYES. IF YOU GET AN EYE
INJURY, GET MEDICAL ATTENTION.
(8) Install pushrods in pushrod tubes.
NOTE:
There are different lengths of pushrods
available for this engine model to aid
in adjusting the dry tappet clearance.
Use the appropriate length to achieve
proper clearance of 0.028 to 0.080 in..
(9) Install exhaust valve rotator cap (115)
on valve stem of each exhaust valve
(65).
NOTE:
A drop of pre-lube or spot of grease on
the inside of each rotator cap will help
retain it in place until the rocker arms
are installed.
(10) Inspect rocker arms (5) for general
condition.
(a) Ensure bushing (10) is properly
installed.
(b) Check rocker shaft (15) in bushing
for correct fit.
(c) Lubricate the rocker arm socket and
oil feed hole to ensure clear
passage.
(11) Rotate the engine until cylinder #1 is at
top dead center (TDC).
(12) Apply a light film of pre-lube oil to the
rocker shafts. Install rocker arms and
shafts in the #1 cylinder head.
(13) Check dry tappet clearance. Clearance
must be within limits per Fits and
Clearances section of this manual.
(a) Repeat for all remaining cylinders.
(b) Install the rocker shaft caps (thrust
buttons) (20) in each end of the
rocker shaft (15) immediately before
installing rocker cover.
NOTE:
Change the pushrod length as
required to achieve proper clearance.
NOTE:
A light coat of grease applied to the
thrust buttons will aid in retaining them
in position until the rocker covers (45,
Figure 72-00-09.17) are installed.
29
© March 2005 Superior Air Parts Inc.
72-00-09
Engine Assembly
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