Overhaul Manual
O-360 and IO-360 Series Engines
Connecting Rod Assembly Inspection
(1) Visually inspect the rod assembly (5,
Figure 72-00-09.6) for handling damage,
defects, and corrosion.
(2) Inspect the bore finish. This must be
smooth and free of burrs.
(3) Verify correct rod part number.
(4) Verify the serial number match for each
rod and cap assembly.
(5) Verify and record each rod assembly
weight.
NOTE:
Difference in rod assembly weights
must not exceed 2 grams in opposing
pairs.
(6) Check each piston pin (35) in each rod
(5) for fit. The pins must slide freely
through the rod.
Subassembly of Connecting Rods to
Crankshaft
(1) Visually inspect the rod bolts and nuts
(10, 15 Figure 72-00-09.6). Lightly
lubricate bolt shanks and threads with
pre-lube oil.
(2) Verify bearing part number and size for
crankshaft and model application.
(3) Install the connecting rod bearing shell
(1) in each rod and cap (5).
(4) Apply pre-lube oil to the bearing shell
(1).
(5) Apply pre-lube oil to the rod bearing
journals of crankshaft.
(6) Insert 2 rod bolts through each rod cap.
Begin with the lowest serial number rod
cap and install it to the crankshaft with
its matching rod (5) at the #1 (most
forward) rod location.
(a) Install with serial numbers in same
plane and down towards oil sump.
Refer to Figure 72-00-09.7.
(b) Install the nuts with flat side to
connecting rod. Refer to Figure 72-
00-09.7. Tighten moderately to
check fit prior to torque.
(7) Tighten each rod nut to bolt (10,15,
Figure 72-00-09.6) evenly to 480 in-lb.
torque.
(8) Rotate each connecting rod (5) after
torque to check for smooth and free
rotation.
(9) Measure and record connecting rod to
crankshaft side clearance. Clearance
must be within limits per Fits and
Clearances section of this manual.
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.
Installation of Crank Gear to Crankshaft
(1) Inspect the crank gear (5, Figure 72-00-
09.3), bolt (15), and lockplate (10) for
defects.
(2) Lightly lubricate with pre-lube crank bolt
threads and install the gear (5) to
crankshaft with bolt (15) and new
lockplate (10). Ensure that the gear (5)
fits evenly in crank recess, aligns with
dowel, and sits flat when torqued.
Tapping the gear with a soft aluminum
or brass drift will help ensure the seal is
properly seated. Torque crankshaft gear
bolt (15) to 204 in-lb. Attempt to insert a
pointed 0.001 in. feeler gage or piece of
shim stock between the gear and the
crankshaft at each of the three scallops.
There is no allowable clearance
between crankshaft and gear. Bend
lockplate (10) tab up to secure bolt
head.
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.
9
© March 2005 Superior Air Parts Inc.
72-00-09
Engine Assembly
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