NMWR-9-2815-220 Overhaul Manual for M60 M88 Engine AVDS-1790-2CA, AVDS-1790-2DA, AVDS-1790-2DR Download
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NMWR 9-2815-220 PISTON AND CONNECTING ROD ASSEMBLY OVERHAUL—Continued 0011 00 GENERAL INSTRUCTION This section covers overhaul of the piston and connecting rod assembly. Specific instructions on disassembly, cleaning, inspection, repair, and assembly are included. Wear limits, fits, tolerances, and overhaul inspection procedures (OIP’s) for individual components are also included. DISASSEMBLY Disassemble piston and connecting rod assembly in accordance with TM 9-2815-220-34. CLEANING 1. Refer to WP 0005 00 for general cleaning instructions. WARNING Use goggles, rubber gloves, and rubber apron when cleaning parts in carbon removing compound. Provide adequate ventilation. Avoid inhalation of fumes and skin contact. If compound is splashed on skin, flush with fresh water and wash with alcohol. Alcohol containing 2 to 3 percent camphor is preferable. 2. Clean pistons and piston pins by soaking in carbon removing compound per MIL-PRF-680(1). Scrape remaining carbon deposits from piston ring grooves with a scraper or broken piston ring. Be careful not to scratch or gouge ring grooves. Clean oil drain holes and oil ring grooves in piston. Remove carbon from oil holes in ring grooves. Clean carbon from piston pins with wiping rag dipped in cleaning compound solvent. 0011 00-2 Change 1