C-2
IO-240 Series Engine Installation & Operation Manual
31 October 2011
Standard Practices
•
Do not re-install any worn, deformed, or single use fasteners.
•
Torque hardware to Appendix B torque specifications.
WARNING
Do not apply any form of sealant to the crankcase cylinder
deck, chamfer, cylinder mounting flange, cylinder base O-ring,
or cylinder fastener threads. The use of RTV, silicone, Gasket
Maker or any other sealant on the areas listed above during
engine assembly will cause a loss of cylinder deck stud or
through-bolt torque. Subsequent loss of cylinder attachment
load, loss of main bearing crush and/or fretting of the
crankcase parting surfaces will occur. The result will be
cylinder separation, main bearing movement, oil starvation and
catastrophic engine failure. USE ONLY CLEAN 50 WEIGHT
AVIATION ENGINE OIL ON SURFACES LISTED.
•
Before installing nuts and bolts, verify the fastening hardware is lubricated according
to Chapter 3 and Appendix B instructions. Inspect all fasteners for proper plating and
thread form. Failure to verify a fastener’s serviceability or to correctly lubricate the
fastener as instructed in Appendix B prior to installation will result in the fastener not
being properly pre-loaded. Subsequent fastener failure may occur.
C-2. Replacement Parts
C-2.1. Background
An increasing amount of replacement parts (including standard parts), materials,
appliances, and instruments are represented as being of aircraft quality when actually the
quality and origin of these units is unknown. Users of such units are usually not aware of
the potential hazards involved with replacement parts that are not eligible for use on
certified aircraft. Frequently, such units are deceptively advertised or presented as
“unused,” “like new,” or “remanufactured,” implying the quality of such units is equal to
an original or appropriately repaired or overhauled unit.
The performance rules for replacement of parts and materials used in the maintenance and
alteration of U.S.-certified aircraft are specified in Federal Aviation Regulations (FAR)
43.13 and 14 CFR Part 21.303. The responsibility for the continued airworthiness of the
aircraft, which includes the replacement of parts, is the responsibility of the owner/
operator as outlined in FAR 43.13 and 14 CFR Part 21.303.
C-2.2. Acceptable Replacement Parts
Continental Motors, Inc. provides Instructions for Continued Airworthiness (ICAs) based
on the design, testing, and certification of engines and parts for which Continental Motors
is the holder of the Type Certificate (TC) or Parts Manufacturing Approval (PMA) issued
by the Federal Aviation Administration (FAA). These instructions, which include
maintenance, repair limits, overhaul, and installation are applicable only to engines and
parts supplied by Continental Motors. Continental Motors does not provide instructions
relating to the installation or use of aftermarket parts. Instructions provided by other
engine parts manufacturers or resellers should be used for their parts. Continental Motors
Summary of Contents for IO-240-A
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