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B. Put the aircraft in a position facing the wind.
C. Start the engine. If either you do not see oil pressure (greater than 0) indication within 10
seconds after engine start or oil pressure does not continue to increase above the
published minimum pressure (per Appendix A, Table A-2) in the next 20 seconds, stop
the engine. Identify and correct the problem before another engine start.
D. Monitor the oil pressure and oil temperature. If low or no oil pressure is noted, stop the
engine and identify the cause.
E. Operate the engine at 750 rpm for 1 minute; slowly increase the speed to 1000 rpm in 3
minutes.
F. Let the engine operate at 1000 rpm for approximately 3 minutes.
G. Look for any illuminated caution or warning lights in the cockpit.
H. If oil pressure is sufficient, operate the engine at 1000 RPM until the oil temperature is
stable or is at 140°F (60°C). After warm-up, the oil pressure is not to be less than the
minimum specified pressure per Appendix A.
I. Increase the engine speed to 1500 RPM and operate the engine at that speed for 15
minutes.
J. Make sure the cylinder head temperature, oil temperature, and oil pressure are within the
specified limits in Appendix A of this manual.
NOTICE: Extended ground operation can cause excessively high cylinder head and/or oil
temperatures.
If any malfunction occurs, stop the engine and let it cool. Identify and correct the
cause before continuation of the ground operational test.
K. If the engine is equipped with a mechanical propeller governor, complete a cycle of the
propeller blade pitch positions as applicable per the airframe manufacturer's
recommendations.
L. Operate the engine to full-static aircraft recommended power (in Appendix A) for up to
10 seconds.
M. After engine operation at full power, slowly decrease the RPM to idle and let the engine
stabilize.
NOTICE: As needed, set fuel controls on new, rebuilt, or overhauled engine to 50 to 100
rpm higher than usual idle speed (600 to 700 rpm) for the first 25 hours of
operation - then adjust to the usual setting after the first 25 hours of operation.
N. Shut down the engine per "Step 7. Engine Stop" procedure in the "Engine Initiation"
chapter of this manual.
O. After shutdown, examine the engine for oil and fuel leaks. Identify and correct the cause
of any leaks.
P. Per Chapter 12-10 in the TEO-540-A1A Engine Maintenance Manual:
(1) Complete an oil change and replace the oil filter.
Field Run-In
Page 44
TEO-540-A1A Engine Installation and Operation Manual
© 2018 Avco Corporation. All Rights Reserved
October 2018
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