TM 1-1520-238-23 1-172 Change 11 1.53. AIRCRAFT AND AIRCRAFT COMPONENT WASHING, CLEANING, AND FRESH WATER RINSE PROCEDURES – continued Table II. Cleaning of Specific Areas and Components – continued Item No. Cleaning Procedures Mixing Directions Cleaning Agent or Compound & Nomenclature Type of Soil Area or Component 3. (same as 1) Heavy soils (carbonized oil, aged preservatives, grease, gun blast, and Dry cleaning solvent (item 74, App F) Pre-clean by wiping or brushing soiled area with dry cleaning solvent (item 74, App F). Then apply cleaning compound cleaning compound exhaust deposits) Cloth (item 51, App F) (item 44, App F) with foam generator, spray, sponge, or cloth. Allow the cleaner to dwell for up to one minute without scrubbing, then scrub for Cleaning compound (item 44, App F) 1 part cleaner in 1 part water , up to one minute. Rinse thoroughly, then dry. Do not allow cleaning solutions to dry on surfaces, or streaking will occur. 4. Unpainted exterior surfaces Gun blast residues, carbonized exhaust Cleaning compound (item 44, App F) Mat (item 121, App F) 1 part cleaner in 4 parts water Wet surface with fresh water. Apply cleaning compound (item 44, App F) and scrub briskly with mat (item 121, App F). Rinse with fresh water. 5. Unpainted exterior surfaces Gun blast residues, carbonized exhaust Corrosion preventive compound (item 63, App F) For stubborn deposits spray area with corrosion preventive compound (item 63, App F), then follow with brushing. 6. Cockpit floor Human or animal urine, feces Cleaning compound (item 44, App F) 1 part cleaner in 9 parts water Wash thoroughly with cleaning compound (item 44, App F) using a soft bristle brush, then rinse with fresh water. GO TO NEXT PAGE