TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM9-2815-202-34 Section Ill. ENGINE 6-34. PISTON AND CONNECTING ROD This task covers: a. Removal d. Inspection g. Assembly DISASSEMBLY\ASSEMBLY MAINTENANCE (TRUNK TYPE) b. Disassembly c. Cleaning e. Fitting Piston f. Fitting Piston Rings h. Installation - Cylinder Kit Assembly INITIAL SETUP MODELS MANDATORY REPLACEMENT PARTS 7083-7398 7083-7399 TOOLS AND SPECIAL TOOLS General mechanics tool kit (App B, Item 96) Piston ring pliers (App B, Item 12) Ball attachment (App B, Item 6) Piston pin retainer installer (App B, Item 57) Piston pin retainer leak detector (App B, Item 63) Piston ring compressor (App B, Item 12) Cylinder liner hold down clamps (App B, Item 11) Spring scale (App B, Item 24) Feeler gage set (App B, Item 24) Torque wrench (App B, Item 101) Micrometer 0-1 inch (App B, Item 65) Micrometer 4-5 inch (App B, Item 65) Micrometer 1-2 inch (App B, Item 65) Ridge reamer (App B, Item 72) 1 Ring Set (App F, Item 127) 1 Ring Set (App F, Item 126) 1 Ring (App F, Item 121) 3 Rings (App F, Item 123) 2 Piston pin retainers (App F, Item 119) EXPENDABLE/DURABLE SUPPLIES Flat Stone (App C, Item 43) Engine oil (App C, Item 16) Wood block (App C, Item 46) Carbon removing compound (App C, Item 7) Plastic gage (App C, Item 30) Crocus cloth (App C, Item 12) Fuel oil (App C, Item 21) EQUIPMENT CONDITION Para Description 6-21 Oil pan removed 6-28 Cylinder head removed 6-32 Oil pressure regulator and relief valve removed 6-33 Oil pump removed ● Applies to engines thru serial number 8VA-294356 a. Removal CAUTION Piston ring breakage can occur if carbon deposits at top of liner are not removed. (1) Using a ridge reamer, remove carbon deposits from upper inner surface of cylinder liner (1). 6-30