Step-16. Engine Pre-Oil Procedure - Lycoming TEO-540-A1A Installation And Operation Manual

Step 16. Engine Pre-Oil Procedure
WARNING IF THE PRE-OIL PROCEDURE IS NOT DONE, HIGH-SPEED BEARING
FAILURE CAN OCCUR.
NOTICE: The purpose of the engine pre-oil procedure is to internally circulate oil through the
engine via a few manual turns of the crankshaft and ensure that oil pressure is sustained
and there are no oil leaks.
Complete the engine pre-oil procedure on the engine at the following times:
• Before the initial start of a new, overhauled, rebuilt, or stored engine
or
• After oil cooler replacement or draining
or
• Whenever the oil lines have been disconnected. Disconnect the oil inlet connection at the oil
pump and drain a sufficient amount of oil from the tank to be certain there are no obstructions
or air in the inlet line to the oil pump.
or
• After any prolonged period of inactivity requiring the "Engine Preservation and Storage"
procedure in this manual
To complete the pre-oil procedure:
1. Make sure that the Ignition switch, the Auxiliary Fuel Pump switch, and the Fuel Selector are
all in the OFF position.
2. Disconnect the oil supply hose from the top of the turbocharger.
3. Disconnect the engine air duct from the compressor housing inlet.
4. Fill the turbocharger oil inlet port with clean ashless dispersant engine oil and manually turn
the compressor wheel several revolutions in both directions to apply a coat of oil to all
journal and bearing surfaces.
5. Reconnect the engine air duct to the compressor housing inlet.
6. Fill the oil cooler with oil per the airframe manufacturer's instructions.
7. Remove one spark plug from each cylinder of the engine. Remove and discard the spark plug
gasket per instructions in Chapter 74-20 in the TEO-540-A1A Engine Maintenance Manual.
8. Move the power control to the FULL OPEN position.
CAUTION
9. Energize the starter until oil is visible and/or flows from the end of the disconnected
turbocharger oil supply hose.
10. Reconnect the turbocharger oil supply hose to the turbocharger.
Engine Installation
Page 40
DO NOT ENERGIZE THE STARTER FOR PERIODS OVER 10
SECONDS. LET THE STARTER COOL AFTER EACH ENERGIZATION.
IF THE STARTER FAILS TO ENERGIZE AFTER TWO ATTEMPTS,
CONTACT LYCOMING ENGINES.
TEO-540-A1A Engine Installation and Operation Manual
© 2018 Avco Corporation. All Rights Reserved
October 2018