TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
Page 408 of 670
TM 9-2815-202-34 5-27. ENGINE LOWER FRONT COVER b. Cleaning/inspection REPLACEMENT (Cont) ● ● (1) (2) (3) (4) (5) 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 flame or excessive heat. The flash point is 100 o F-138°F (38 o C-50 o C). If you become dizzy while using cleaning solvent, get fresh air immediately and get medical aid. If contact with eyes is made, wash your eyes with water and get medical aid immediately. 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.). Clean front cover with dry cleaning solvent and dry with compressed air. Inspect front cover sealing and mating surfaces for cracks, nicks, and damage that would prevent proper sealing. Check inside of spacer and crankshaft for burrs and nicks. Clean up burrs using crocus cloth in circular motion. Inspect spacer ring for nicks or burrs that would prevent proper sealing. Inspect damper for dents, nicks, bulges or leakage in outer case. Replace damper if any of above conditions are present. NOTE Regardless of condition, replace damper at time of normal periodic major engine overhaul. (6) Inspect inner cone, outer cone, and damper hub for galling or burrs. Remove sight scratches or burrs with emery cloth. c. Repair (seal replacement) (1) Support outer face of front cover (16) on two wooden blocks and drive seal (19) out of front cover. Discard seal. (2) Clean seal bore. NOTE if new oil seal is not precoated, apply nonhardening sealant to outer edge of metal casing. (3) Position seal (19) in front cover (16) with seal lip pointed toward inner face of cover. 5-30