TM9-2815-226-34-1 - JATONKAM35s HOME ON THE WEB

TM 9-2815-226-34-1WARNINGP-D-680 SOLVENT IS POTENTIALLY DANGEROUS. AVOID PROLONGED ORREPEATED CONTACT WITH SKIN. KEEP AWAY FROM FLAME OR EXCESSIVEHEAT.(3) Repair minor damage to machined surfaces with a fine file, emery cloth, or crocus cloth dipped in drycleaning solvent. Replace all castings on which machined surfaces are burred or nicked to the point ofimpairing subsequent assembly or operation.(4) Repair minor warpage of mounting flanges and gasket surfaces by working the surface across a sheet ofemery cloth held tightly on a surface plate or a similar flat surface. Finish similarly with crocus cloth.Replace castings having flanges which are warped to the point of impairing assembly or operation.(5) Repair damaged pipe or capscrew threads in tapped holes with a tap.c. Ball Bearings.NOTEPipe plug threads in castings must be in good condition to prevent oil or waterleakage.(1) Replace all galled, pitted, or damaged ball bearings.(2) Replace all ball bearings which do not conform to tolerances specified in repair standards (Table 3-1).(3) Refer to TM 9-214 for maintenance of antifriction bearings.d. Studs. Replace all bent or loose studs and studs showing evidence of stretching. Repair minor thread damagewith a thread chaser. Replace all studs having stripped or damaged threads. Remove and replace studs asoutlined in (1) and (2), below.(1) Removal. Using a stud extractor, back the studs out slowly to avoid heating and possible seizure. Whenthe studs are broken off too short to use a stud extractor, drill the stud and extract it with an easy out.Another method of removal is to use a welding torch and heat stud. Apply a wax stick to stud allowingmelted wax to flow into threads. While stud is still hot, use vise grips and carefully turn stud until it' comesout. Take care not to break stud.(2) Replacement. Only standard studs are supplied for replacement. If threaded openings are damaged andretapping will not clean up threads, drill and tap opening in casting and install a threaded insert.3-18