TM 9-2350-277-20-2PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDINGLUBRICATION INSTRUCTIONS — Continued0155 00h.CASTINGS.WARNINGAir pressure in excess of 30 psi (207 kpa) can injure personnel. Do not direct pressurized air atyourself or others. Always wear goggles.1) Clean inner and outer surfaces of casting with cleaning compound (WP 0928 00, Item 19). Dry casting withcompressed air.2) Remove sludge and gum deposits with a brush.3) Blow out all tapped holes with compressed air.i.BALL BEARINGS. Bearings require special cleaning techniques. See TM 9-214 for cleaning and maintenanceprocedures for ball bearings.j.OIL PASSAGES.1) Make sure oil passages are not clogged.2) Clean oil passages and break up any sludge or gum deposits.WARNINGAir pressure in excess of 30 psi (207 kpa) can injure personnel. Do not direct pressurized air atyourself or others. Always wear goggles.2) Flush oil passages with cleaning compound (WP 0928 00, Item 19). Dry parts with compressed air.k.OIL SEALS, ELECTRIC CABLES, AND FLEXIBLE HOSES.CAUTIONCleaning compound causes leather, rubber, and synthetic materials to become brittle. Do notuse cleaning compound to clean seals, cables, and flexible hoses.1) Clean seals, cables, and flexible hoses with general purpose detergent (WP 0928 00, Item 35) and water. Drywith wiping rag (WP 0928 00, Item 65).0155 00-9
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