Overhaul Manual
O-360 and IO-360 Series Engines
CLEANING
General
Cleanliness of the aircraft engine is crucial to its
optimum performance. This section provides
information on materials, tools, and guidelines
for cleaning.
After the initial visual inspection of internal
engine parts, it is necessary to thoroughly clean
the engine components for detailed inspection.
Since this visual inspection is made during and
after disassembly, the components should be
cleaned afterwards and tagged to facilitate
further non-destructive inspection methods.
This identification procedure will also help
prevent these components from being
overlooked.
It is important to remember to visually inspect an
engine prior to cleaning. Residue from the
engine’s operation can provide information as to
hidden defects or other dangerous conditions.
Tools and Materials
For tools required during cleaning, refer to Table
72-00-07.1. For consumable materials required
during cleaning, refer to Table 72-00-07.2.
Table 72-00-07.1
Equipment Required for Cleaning
Item Vendor
Brush (soft and stiff
bristles)
Commercially
Available
Immersing tank
Commercially
Available
Scraper (wood)
Commercially
Available
Grit blaster
Commercially
Available
NOTE: Equivalent substitutes may be used.
Cleaning Instructions
Two (2) processes are used in cleaning engine
parts; degreasing to remove dirt and sludge (soft
carbon) and the removal of hard carbon by
decarbonizing, brushing or scraping and grit
blasting.
CAUTION
: DO NOT USE SAND OR METALLIC
ABRASIVES WITH THE GRIT BLASTING
EQUIPMENT.
Degreasing
Degreasing is accomplished by immersing or
spraying the part in solution of white furnace oil
(38-40 specific gravity) or another suitable
solvent such as Varsol or Perm-A-Chlor.
Table 72-00-07.2
Materials Required for Cleaning
Item Vendor
Cleaning solvent or degreaser
such as white furnace oil,
Varsol, or Perm-A-Chlor
Commercially
Available
Decarbonizing solutions such
as Gunk, Penetrol, Carbrax,
Super-Chemco, or Gerlach #70
Commercially
Available
Isopropyl Alcohol
Commercially
Available
Aerosol electrical contact
cleaner
Commercially
Available
Lubricating Oil (SAE 20)
Commercially
Available
Corrosion preservative oil
Commercially
Available
Abrasive cloth (crocus cloth)
Commercially
Available
NOTE
: Residue from the solvent washing must
be captured and contained to prevent
contamination of the surrounding
environment.
WARNING
: USE THE CORRECT PERSONAL
PROTECTION. SOME CHEMICAL
SOLUTIONS CAN CAUSE SKIN, EYE AND
LUNG DAMAGE. FOLLOW THE
MANUFACTURER'S INSTRUCTIONS FOR
EACH CLEANING SOLUTION.
CAUTION
: IF ANY WATER-MIXED
DEGREASING SOLUTIONS CONTAINING
CAUSTIC COMPOUNDS OR SOAP ARE
USED, EXTREME CARE MUST BE
EXERCISED. THESE COMPOUNDS IN
1
© March 2005 Superior Air Parts Inc.
72-00-07
Cleaning
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