IO-240 Series Engine Installation & Operation Manual
C-1
31 October 2011
Standard Practices
Appendix C.Standard Practices
C-1. Handling Parts
When removing, replacing, or re-installing parts, heed the following precautions,
warnings, and tips:
WARNING
Turn the Ignition Switch OFF and disconnect engine electrical
power before commencing maintenance or inspections.
Confirm continuity between the magneto capacitor and aircraft
ground to prevent accidental engine start during maintenance.
Do not stand or place equipment within the arc of the propeller.
•
If the engine is installed, disconnect engine electrical (battery) power and verify the
Ignition Switch is turned OFF. Confirm continuity between the magneto capacitor and
aircraft ground before commencing engine maintenance
•
Inspect replacement parts for deterioration or wear. Do not install parts that appear
worn, deteriorated, or beyond published (service or overhaul) limits.
•
Prevent safety wire, nuts, washers, dirt, etc. from entering the engine.
•
If any foreign object accidentally falls into the engine, stop working on the engine
immediately and retrieve the dropped object(s).
•
Tag unserviceable parts or units for investigation and possible repair.
•
To ensure proper re-installation of usable parts, tag or mark all parts and hardware as
they are removed or disassembled.
•
Use protective caps, plugs, and covers to ensure openings are unexposed. Install dust
caps
over
the tube ends of open lines and
NOT IN
the tube ends. Be sure to remove
the dust caps and covers after the maintenance or repair work is complete.
•
Cover stored engine sub-assemblies.
•
Inspect new parts for transit damage.
Do not install damaged or non-conforming
parts
. Re-seal or rewrap the new part until the part is ready to be cleaned, prepared,
and installed.
•
Check the shelf life of new parts to be installed. Do not install parts with an expired
shelf life.
•
Thoroughly clean parts according to “Engine Cleaning” instructions in Chapter 14 of
the Maintenance and Overhaul Manual (M-6).
•
Use only a plastic or rawhide mallet made to tap engine parts during assembly; never
use a hammer.
•
Always install new gaskets, o-rings, rubber components, seals, packing, cotter pins,
tab washers, safety wire, and lock washers when servicing components.
•
Use only new, shake proof or split lock washers, tab washers, elastic stop nuts, cotter
pins, and corrosion-resistant safety wire.
•
Do not replate cadmium-plated fasteners or washers. If the cadmium plating has been
removed, discard the item and replace it with a new part.
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