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TM   5-2815-241-34&P REPAIR  -  CONTINUED Repair When a casting oil seal bore or adapter is burred to a point where an oil tight seal is impossible, re- place the casting or adapter. Remove slight nicks, burrs, and scratches from casting bore or adapter with crocus cloth (item 4, appendix B) dipped in drycleaning solvent (item 16, appendix B). Installation Install a new oil seal in bore of casting or adapter, using proper oil seal installing tool. ASSEMBLY Extreme care must be taken in all component assembly operations to ensure satisfactory engine per- formance.  General  cautions  are  outlined  below.  Step-by-step  procedures  for  assembly  of  various components  are  covered  in  paragraphs  relating  to  the  specific  components. 1. Cleanliness  Is  the  most  important  factor  to  consider  during  the  assembly  of  all  components.  The smallest amounts of dirt and dust can be abrasive and cause premature component failure. 2. Coat all bearings and contact surfaces with lubricating oil (item 12, appendix B) to ensure lubrication  of  parts  during  initial  engine  startup. 3. Replace  all  gaskets,  preformed  packings,  and  lockwashers. TAPING  THREADS Antiseizing tape (item 18, appendix B) is wrapped around threads, pipe plugs, screws, studs, and other type of threaded attaching hardware, to provide a better seal and also to permit easier removal. 1. Make sure item to be wrapped is clean and dry before applying antiseizing tape. 2. Start the tape one or two threads from the leading edge, joining the tape together with an overlap of approximately 1/8 inch. 3. Wrap tape tightly in the same direction you would screw in the item being taped. Press tape into threads  without  ripping  or  cutting  tape. TAGGING   PARTS Before  disconnecting  or  separating  electrical,  air,  hydraulic,  or  mechanical  components,  always identify the mating parts for correct installation later. This can be done by tagging each part (item 17, appendix B) with duplicate numbers or letters, or, in the case of electrical connections, identify the terminal or circuit number on the individual wire or the wire number on the terminal or circuit. Parts to be repaired must be tagged as needing repair. Note necessary information on repair tags. 2-8


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