TM10-3930-660-20 (1) Clean passages with wire probes to break up any sludge or  gum deposits. (2) Wash passages by flushing with solvents. Refer to TM9-247. (3) Dry passages with compressed air. f. Oil Seals,  Electrical  Cables,  and  Flexible  Hoses. CAUTION Washing oil seals, electrical cables and flexible hoses with dry cleaning solvents or mineral spirits will cause serious damage or destroy the material. (1) Wash electrical cables and flexible hose with water and mild soap solution and wipe dry. (2) Oil seals are generally damaged during removal, so cleaning will not be necessary since new seals will be used in assembly. g. Bearings. (1) Bearings require special cleaning. After removing surface oil and gum deposits, place bearings in hot oil (140°F (60°C)) to loosen congealed oil and  grease. Wipe bearings dry. Do not use compressed air. After cleaning, coat bearings with oil, wrap in paper, and hold for inspection. (2) Refer to TM9-214 for information and care of bearings. h. Machine Tooled Parts. (1) Clean machine  tooled  parts  with  dry  cleaning  solvent  (P-D-680). (2)  Dry  parts  with  compressed  air. i. Machined Surfaces. (1) Clean machined surfaces with dry cleaning solvent (P-D-680). (2) Dry  surfaces  with  compressed  air. j. Mated Surfaces. (1) Remove old gasket and/or sealing compound using wire bush and dry cleaning solvent   (P-D-680). (2) Lightly oil and wrap all parts subject to rust before storing. k. Rusted  Surfaces. Clean all rusted surfaces using wire brush and crocus cloth  . 1. Oil Bathed Internal Parts. Wipe oil bathed internal parts clean with lint free cloth. 3-4