TM-9-2815-210-34-2-2 LDS-465-1/LDS-465-2 Multifuel Engine Maintenance Manual Part 2
Page 21 of 968
TM 9-2815-210-34-2-2 d. Make sure all oil passages are open. Open clogged passages with compressed air or by working a stiff wire back and forth. Flush with solvent. c. After cleaning, all parts should be covered or wrapped in plastic or paper to protect them from dust and dirt. 4-4. INSPECTION. Check all bearing cones and cups. Refer to Inspection, Care, and Mainte- nance of Antifriction Bearings, TM 9-214. b. Small chips, burrs or scratches in castings that do not go into screw holes or openings can be repaired. c. Check all mating flanges on housings and supports for warpage with a straight edge or on a surface plate. Check mating flanges for discoloring. Discoloring of flanges will mean that oil has been leaking which may mean that flanges are warped. d. Check aluminum castings for cracks using penetrant kit. If dye penetrant inspection equipment is not available, use a magnifying glass and a strong light. e. Check all other type castings for cracks with magnetic particle inspection equipment. If magnetic particle inspection equipment is not available, use a magni- fying glass and a strong light. NOTE There are no wear limits on gear teeth. Good judgement is needed to know if parts are good. f. Check all gears for cracks, worn teeth, and pitted surfaces. g. Check all threaded parts for worn or stripped threads. 4-5. REPAIR. a. Smooth out any chips, burrs, or scratches on castings, gears, and shafts. b. Weld cracks and small holes in castings. Refer to TM 9-237. c. Drill out any bolts or studs broken off in tapped holes. d. Drill out threaded holes that are stripped or out-of-round to the next larger size and retap them. When putting engine together, use a bolt or stud the size of the newly tapped hole. e. Tell the machine shop to mill warped castings. Section III. CLEANING, INSPECTION, AND REPAIR OF ENGINE COMPONENTS AND ACCESSORIES TOOLS: Valve seat replacing tool, pn 11642007 Exhaust valve seat replacer, pn 11642006 Hand reamer, pn 12254220 Air compressor pulley adjusting wrench, pn 10935288 Fuel passages cleaning brush, pn ST 876 SUPPLIES: Dry cleaning solvent, type II (SD-2), Fed. Spec P-D-680 Air compressor unloader valve gasket Air compressor intake air cleaner gasket Air compressor air discharge manifold gasket 4-2