Overhaul Manual
O-360 and IO-360 Series Engines
SPECIAL PROCEDURES
General Break-In Procedures
This section provides the Break-In Procedures
to achieve satisfactory ring seating and long
cylinder life. On all new Vantage engines, after
top overhaul or major engine overhaul, break-in
is critical.
NOTE
: Refer to the engine warranty. Violation
of these procedures will void the
engine's warranty.
Special Tools and Equipment
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Standard aviation shop tools are required.
Engine test stand.
The aircraft can be a suitable test stand for
running-in cylinders.
Break-In Procedures
WARNING
: OPERATION OF A DEFECTIVE
ENGINE WITHOUT A PRELIMINARY
EXAMINATION CAN CAUSE FURTHER
DAMAGE TO A DISABLED COMPONENT
AND POSSIBLE INJURY TO PERSONNEL.
MAKE SURE THOROUGH INSPECTION AND
TROUBLESHOOTING PROCEDURES ARE
ACCOMPLISHED. THIS WILL HELP TO
PREVENT INJURIES TO PERSONNEL
AND/OR DAMAGE TO THE EQUIPMENT.
Prior to Break-In Start-Up
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Engine oil sump should be filled with 100%
straight weight mineral oil. Use MIL-L-6082,
specific grade depending on ambient
temperature. Refer to chapter 72-00-13 for
fluid requirements.
Engine must be pre-oiled and oil pressure
obtained prior to start-up.
To pre-oil an engine, do the following:
1. Attach pressure-oiling equipment to one
end of the main gallery and force oil
through the galley at 35 psi until oil flows
from the opposite galley with the plug
removed from the front end of the
opposite galley.
2. Engine baffles and seals must be in
good condition and properly installed.
3. Verify accuracy of instruments required
for engine operation.
CAUTION
: BREAK-IN OF AN ENGINE IN
FRIGID CONDITIONS CAN LEAD TO
CYLINDER GLAZING AND FAILED BREAK-IN
DUE TO LOW OIL TEMPERATURE. IT IS
RECOMMENDED THAT OIL TEMPERATURE
BE MAINTAINED BETWEEN 180° AND 190°F.
Break-In Ground Run
Flight propeller may be used if test club is
not available.
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Head aircraft into the wind.
Start engine and observe oil pressure. Oil
pressure should be indicated within 30
seconds. If this does not occur, shut down
engine and determine cause.
Run engine just long enough to confirm all
components are properly adjusted and
secured. There must be no fuel and/or oil
leaks.
Install cowling.
Operate engine at 1000 -1200 RPM until oil
has reached minimum operating
temperature 120 °F.
Check magneto drop at normal RPM.
If engine is equipped with a controllable
pitch propeller, cycle only to a 100 RPM
drop.
Shut down engine and check for fuel and/or
oil leaks and repair any discrepancies.
At no time should cylinder head temperature
be allowed to exceed recommended
maximum cruise limit of 430°F.
Break-In Flight Operation
Perform normal pre-flight and run-up in
accordance with the Installation and
Operation Manual, SVIOM01 (remember:
cycle controllable pitch prop to only a 100
RPM drop). Keep ground runs to a
minimum.
Conduct normal take-off at full power, full
rich mixture, to a safe altitude.
NOTE:
In certain geographic locations and
weather conditions (eg; high density
altitudes) “Full Rich” operation may
not be practical. In this event,
substitute the requirement of “Full
Rich” as discussed in this chapter with
the “richest practical setting”.
1
© March 2005 Superior Air Parts Inc.
72-00-04
Special Procedures
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