TM 9-2815-225-34&P 3-44. OIL PUMP REPAIR (Contd) LOCATION/ITEM ACTION REMARKS a.  Disassembly (Contd) 19. Pipe plug (41) Remove from cover (40). 20. Bypass valve seat (33), Remove from body (29). Use caution not to damage bypass valve disc (32), washer valve seat (33) during removal. (31), and bypass valve spring (30) b.  Cleaning WARNING   Compressed  air  used  for  cleaning  purposes  will  not  exceed  30  psi  (207  kPa).    Use  only with effective chip guarding and protective equipment such as goggles or shield, gloves, etc.  Failure to comply may result in injury to personnel.   Approved solvents may be flammable and will not be used near open flame.  Use only in well-ventilated area.  Failure to comply may result in injury to personnel. NOTE Cleaning  procedures  are  the  same  for  M915/Big  Cam  I  and  M915A1/Big  Cam  III  oil  pump assemblies.  M915A1/Big Cam III is shown. 21. All parts Clean with SD-3 solvent and Refer to para. 3-6 for cleaning dry with compressed air. instructions.  Ensure all drilled passages are opened and cleaned. 3-252