P-C-111D, FEDERAL SPECIFICATION: CARBON REMOVING COMPOUND (11-FEB-1977) [NO S/S DOCUMENT]

P-C-111D, FEDERAL SPECIFICATION: CARBON REMOVING COMPOUND (11-FEB-1977) [NO S/S DOCUMENT]., This specification covers one grade of a single phase type liquid carbon removing compound for soak tank use in softening and facilitating effective removal of carbon, gum, and other surface contaminants (except rust and corrosion) from items such as automotive pistons, carburetors, fuel pumps and engine assemblies precleaned with degreasing solvent (see 6.1).