Maintenance and Adjustments
Teledyne Continental Motors, Inc.
TM
9-10
IOF-240 Series Engine Maintenance Manual
29 November 2006
9-3.2. Oil Change
Perform an oil change within 30 minutes of engine shutdown (to obtain a useful oil
sample). Oil changes are recommended at the intervals in “Engine Inspection and
Maintenance” in Chapter 7, “Maintenance Inspections.”
NOTE: More frequent oil changes are recommended under
extreme usage or weather conditions.
Procedure
1.
Remove the oil sump drain plug (Figure 9-2) and drain the oil into a safety-approved
catch basin. After approximately 1/3 of the oil drains from the sump, use clean tubes,
funnels, and a sample (30 to 60 ml) vial to collect 1-2 ounces of the used oil. If a
magnetic drain plug is used, check for signs of ferrous material (e.g., steel, iron) on
the drain plug.
CAUTION: Dispose of the oil in accordance with environmental
standards.
NOTE: TCM recommends the customer submits a
sample of the
oil drained during each 50-hour Engine Maintenance Inspection or
if engine trouble is suspected for spectrographic oil analysis to
establish a wear trend baseline. The first three samples are used to
establish the oil analysis trend.
Spectrographic oil analysis identifies the level of concentration (in
parts per million (PPM)) of wear material suspended in the oil.
Wear material consists of submicroscopic particles due to frictional
loading that occurs during engine operation. Refer to section 9-3.4
“Oil Trend Monitoring and Spectrographic Oil Analysis.”
2.
Reinstall the drain plug with a new crush gasket; torque according to Appendix B
specifications and safety wire the plug according to Appendix C instructions.
3.
Remove the oil filter (Figure 9-2). Cut the oil filter in two parts using the Oil Filter
Can Cutter (CT-470). Inspect the oil filter element for metal debris trapped in the
filter element to assess the engine condition; use a magnet to check for steel
particulate. New, rebuilt, or overhauled engines typically exhibit more wear material
on the first and second oil filter change, which is normal. The wear material should
taper off during subsequent oil changes. If the same quantity of wear material is noted
on subsequent oil changes, note the characteristics of the wear material (refer to
section 9-3.4 “Oil Trend Monitoring and Spectrographic Oil Analysis” and
troubleshoot the engine as directed in Chapter 8, Troubleshooting).
4.
Apply a thin coating of Dow Corning DC-4 compound to the filter gasket to prevent
gasket material sticking to the mating surface. Install the new oil filter; torque the
filter according to Appendix B specifications and safety wire the filter according to
Appendix C instructions.
5.
Add new oil and check the oil level as directed in 9-3.1 “Check and Replenish Engine
Oil Level.”
