Oil Change Procedure - Lycoming TEO-540-C1A Maintenance Manual

8. Oil Change Procedure

NOTICE: Refer to Table 1 for the oil servicing schedule for your engine.
An anti-scuffing oil additive can be added to the oil sump during an oil change. Refer to
the "Oil Additives" section in this chapter.
Per the "Engine Operation" chapter in the TEO-540-C1A Engine Installation and Operation
Manual, operate the engine until the oil temperature stabilizes and then shut down the engine
wait at least 15 minutes after engine shutdown and then proceed with the oil change.
NOTICE: If an oil sample is to be taken, within 30 minutes after engine shutdown, complete
the oil change and collect an oil sample from the oil sump. Send the oil sample in
the vial to the same laboratory (that has been used in the past) for spectrographical
analysis to compare past results and identify a wear trend pattern. Refer to the latest
revision of Service Letter No. L171 for spectrographic oil analysis.
CAUTION
A. Drain the oil from the oil sump as follows:
(1) Put an empty 15-quart (14-liter) capacity container under the drain plugs of the oil sump.
(2) Remove the safety wire from the square drain plugs and discard the safety wire/cable
(Figure 2).
Oil Sump Drain Plugs
(3) Remove the two oil sump drain plugs from the oil sump.
(4) For routine oil changes, collect an oil sample per the laboratory vendor's sample oil
collection procedure.
(5) Disconnect the hoses from the oil coolers and drain the oil coolers and hoses.
(6) Reconnect the hoses to the oil coolers. Torque the hose connections in accordance with
the Standard Torque Tables in the latest revision of the Service Table of Limits - SSP-
1776.
(7) Let the remainder of the oil drain from the engine into the collection container.
B. Clean the threads of the drain plug(s) and the threads in the oil sump with mineral spirits,
MIL-PRF-680 or equivalent degreasing solvent.
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Page 68
THE ENGINE OIL WILL BE VERY HOT AND CAN CAUSE BURNS,
HANDLE WITH CARE.
Figure 2
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Figure 3
Suction Screen for the TEO-540-C1A
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November 2018