Maintenance and Adjustments
Teledyne Continental Motors, Inc.
TM
9-4
IOF-550 Permold Series Engine Maintenance Manual
1 April 2007
Table 9-2.
Cleaning Tips
Dos Don’ts
Use a cloth to wipe off solvent or use compressed
air to blow off the solvent.
Except when removing carbon deposits and gum
(oil varnish), do not use alkaline (caustic) cleaning
solutions for external engine cleaning. Alkaline
solutions remove the alodine finish of aluminum
parts.
Remove dirt (especially caked dirt) and debris from
bolts, nuts, and engine parts.
Do not use any of the following to clean the engine
or its parts:
•
Gasoline
•
Kerosene
•
Abrasive cleaning paste
•
Cleaning
powder
Dispose of cleaning solvents in accordance with
Environmental Protection Agency (EPA)
regulations.
Do not scrape parts or use wire brushes,
sandpaper, abrasive cloth or abrasive wheels to
clean or polish parts to prevent concentrated stress
to scratched areas and fatigue failure.
Dry blast only with plastic media or natural
materials such as wheat grains
Do not use sand, metal grit, or glass beads for any
type of cleaning or dry blasting.
After a part is cleaned, machined or repaired, or if
the alodine finish is worn, apply alodine to
aluminum surfaces, according to Section 9-2.1.
Do not tumble blast wrought or die cast smooth
surface parts such as rocker covers or intake
tubes.
9-1.1. Ground Strap Connection Point Cleaning
The integrity of electrical ground is important to the ability of the FADEC System to
tolerate electromagnetic interference and lightning transients. Two ground straps,
shown in Figure 9-1, are installed on the Electronic Control Unit (ECU). Ground straps
are also installed between the engine and airframe. This procedure applies to any
ground strap connection on this engine.
CAUTION: The security and cleanliness of all ground straps,
electrical connectors, electrical terminals and shields is absolutely
necessary to maintain the FADEC System’s ability to tolerate the
high levels of Electro-Magnetic Interference (EMI) and lightning
that may be experienced in the flight environment. Any ground
straps, electrical connectors, electrical terminals, and shields that
are loose, corroded, or broken must be repaired or replaced prior to
further flight operations.
