TM 9-2815-225-34&P 3-46.  EXHAUST MANIFOLD REPAIR THIS TASK COVERS: a.  Disassembly c.  Inspection b.  Cleaning d.  Assembly INITIAL SETUP: APPLICABLE MODELS REFERENCES (TM) All TM 9-2320-273-20 TM 9-2320-283-20 SPECIAL TOOLS None TROUBLESHOOTING REFERENCES None TEST EQUIPMENT None EQUIPMENT CONDITION Exhaust manifold removed (para. 3-13). MATERIALS/PARTS Compound, antiseize (Appendix C, Item 7) SPECIAL ENVIRONMENTAL CONDITIONS Sealant, pipe (Appendix C, Item 26) None Two spacer inserts (15434) 3020718 GENERAL SAFETY INSTRUCTIONS PERSONNEL REQUIRED Eye protection must be worn when using wire brush Automotive repairman MOS 63H for cleaning. LOCATION/ITEM ACTION REMARKS NOTE M915/Big Cam I engines utilize a conventional log-type exhaust manifold.  M915A1/Big Cam III engines utilize a pulse-type exhaust manifold and a new design exhaust manifold with two spacer inserts.  Disassembly and repair of manifolds is basically the same. a.  Disassembly 1.   Rear exhaust manifold (1), Separate (1), (2), and (4) on early Exertion of force may be required center exhaust manifold (2), design and two spacer inserts (6) to separate the three sections. and front exhaust manifold on new design for M915A1/ (4) Big Cam III only. 2.   Two pipe plugs (3) Remove from center exhaust (M915/Big Cam I only) manifold (2). b.  Cleaning WARNING Eye protection must be worn when using wire brush for cleaning.  Failure to comply may result in injury to personnel. 3.   Rear exhaust manifold (1), Remove carbon and rust with Use a suitable wire wheel to center exhaust manifold (2), steam cleaner. clean mating surfaces. and front exhaust manifold (4) 3-272