TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 PISTONS, RINGS, AND ASSOCIATED PARTS REPLACE/REPAIR 0142 00 THIS WORK PACKAGE COVERS: Disassembly, Cleaning, Inspection, Repair, Assembly INITIAL SETUP: Tools and Special Tools: General mechanic’s tool kit (item 121, WP 0176) Inside micrometer caliper set (item 16, WP 0176) Magnifying glass (item 73, WP 0176) Outside micrometer caliper set (item 17, WP 0176) Piston ring gauges: (WP 0176) 0.010 and 0.030 in. oversize (item 49) Standard and 0.020 in. oversize (item 52) Standard and 0.040 in. oversize (item 50) Top ring groove (item 51) Ring remover and replacer (item 78, WP 0176) Telescoping gauge set (item 54, WP 0176) Inspection kit, dye (item 35, WP 0176) Expendable Materials: Carbon-removing compound (item 7, WP 0173) Cleaning compound, solvent (item 8, WP 0173) Cloth, abrasive, crocus (item 9, WP 0173) Personnel Requirements: Track Vehicle Repairer (1) 63H10 Equipment Conditions: Engine on maintenance stand (WP 0130) Cylinder assembly and piston removed (WP 0133) DISASSEMBLY 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. 1. Check to see if piston rings are free in piston grooves before removal. Grooves Rings a. Soak pistons with stuck rings in carbon removing compound (item 7, WP 0173). Rings must be loose in their respective grooves prior to removal. WP 0142 00-1