TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM 9-2815-202-34 4-36. CYLINDER BLOCK MAINTENANCE (Cont) b. Cleaning NOTE Remove all pipe plugs except fourteen plugs in cylinder head bolt holes. Do not remove solid plugs. (1) Scrape all gasket material from cylinder block. WARNING Dry cleaning solvent P-D-680 is toxic and flammable. Wear protective goggles and gloves and use only in a well ventilated area. Avoid contact with skin, eyes, and clothes and don’t breathe vapors. Do not use near open frame or excessive heat. The flash point is 100 o F-138°F (38 o -50 o C). If you become dizzy while using cleaning solvent, get fresh air immediately and get medical aid. f contact with eyes is made, wash your eyes with water and get medical aid immediately. (2) Clean inner and outer surfaces of cylinder block with cleaning solvent. WARNiNG Compressed air used for cleaning purposes will not exceed 30 psi. Use only with effective chip guarding and personal protective equipment (goggles/shield, gloves, etc). (3) Clean water, air, and oil passages with bore brush. Wash passages by flushing with cleaning solvent and blow out with compressed air. (4) Dry cylinder block with compressed air. c. Inspection NOTE After cylinder block is thoroughly cleaned and pressure tested (step e), cylinder bores must be honed before inspection. (1) Hone cylinder block bores as follows: NOTE Use a hone in which cutting radius of stones can be set in a fixed position to remove irregularities in bore. Do not use spring-loaded hone. Clean stones frequently with wire brush to prevent stone loading. Follow hone manufacturer’s instructions regarding use of oil or kerosene on stones. Do not use such cutting agents with dry hone. Use 120- grit stones. 4-166