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