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Component or Part
Accessory Housing
Cylinders
Deposits in cylinder
combustion chamber
Connecting Rods
Interior surfaces of
aluminum parts with hard
carbon or oil varnish
(gum) deposits
Valve rockers
Stabilizers, valve
components, starter drive,
fuel control inlet screen
Piston
Small steel parts
Large steel parts covered
with light oil
Aluminum or magnesium
parts
Oil sump
Oil pump and oil pump
housing
Oil suction screen
05-30
Page 34
Table 1
Cleaning Guidelines for Engine Components
Cleaning Agent*
Mineral spirits (MIL-PRF-
680), kerosene or equivalent
degreasing solvent
Mineral spirits, MIL-PRF-
680 or equivalent
Petroleum-based
decarbonizing solutions
®
®
(Gunk
, Penetrol
, or
equivalent)
Mineral spirits (MIL-PRF-
680), kerosene or equivalent
degreasing agent
Mineral spirits (MIL-PRF-
680), kerosene or equivalent
degreasing agent
Mineral spirits (MIL-PRF-
680), Safety Solvent or
equivalent degreasing
solvent
Mineral Spirits
Cold Dip Tanks (or closed
tank system) and use
NALCO 1704
Oil-based solvent: mineral
spirits or equivalent
Mineral spirits, MIL-PRF-
680 or equivalent
Mineral spirits, MIL-PRF-
680 or equivalent
degreasing solvent
YO-233-B2A Engine Maintenance Manual
TEO-540-A1A Engine Maintenance Manual
Guidelines
Refer to the "Soft Carbon Removal"
procedure in this chapter
Refer to the "Cylinder Cleaning"
procedure in this chapter.
Refer to the "Grit-Blasting the
Combustion Chamber in an Engine
Cylinder" procedure in this chapter.
Refer to the "Hard Carbon Removal"
procedure in this chapter.
Clean with Scotch-Brite
Remove debris with clean lint-free wipes.
Refer to the "Piston Cleaning" procedure
in this chapter.
Refer to the "Steel, Aluminum or
Magnesium Parts Cleaning" procedure in
this chapter.
Refer to the "Steel, Aluminum or
Magnesium Parts Cleaning" procedure in
this chapter.
Refer to the "Steel, Aluminum or
Magnesium Parts Cleaning" procedure in
this chapter.
Refer to Chapter 12-10 for additional
details.
© 2021 Avco Corporation. All Rights Reserved
™
or equivalent.
February 2021
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