TM 9-2815-225-34&P 3-42.  OIL COOLER REPAIR THIS TASK COVERS: a.  Disassembly c.  Inspection b.  Cleaning d.  Assembly INITIAL SETUP: APPLICABLE MODELS PERSONNEL REQUIRED All Automotive repairman MOS 63H SPECIAL TOOLS REFERENCES (TM) None TM 9-2320-273-20 TM 9-2320-283-20 TEST EQUIPMENT None TROUBLESHOOTING REFERENCES Para. 2-8 MATERIALS/PARTS Solvent, SD-3 (Appendix C, Item 30) EQUIPMENT CONDITION Acid, muriatic (Appendix C, Item 1) Oil cooler removed (para. 3-22). Acid, oxalic (Appendix C, Item 2) Pyridene (Appendix C, Item 24) SPECIAL ENVIRONMENTAL CONDITIONS Sodium, carbonate (5 percent solution) Work area clean and away from blowing dirt and (Appendix C, Item 28) dust. Oil, lubricating, OE/HDO 30 (Appendix C, Item 21) GENERAL SAFETY INSTRUCTIONS Expansion plug (15434) 142110    Always wear eye protection when working with Gasket and seal kit (15434) 3018762 compressed air. (M915/Big Cam I)    Approved solvents may be flammable and will not Ten lockwashers (96906) MS35338-48 be used near open flame.  Use in well-ventilated (M915/Big Cam I) area. Lockwasher (15434) 70216 (M915/Big Cam I) Gasket and seal kit (15434) 3801235 (M915A1/Big Cam III) Eleven lockwashers (15434) S-604 (M915A1/Big Cam III) Three lockwashers (96906) MS122032 (M915A1/Big Cam III) LOCATION/ITEM ACTION REMARKS a.  Disassembly NOTE   Perform steps 1 through 7 for M915/Big Cam I only.   Perform steps 8 through 16 for M915A1/Big Cam III only. 1. Pipe plugs (7), (17), and (32), Remove from cover (15), housing expansion plug (16) or (12), and cover (3). elbow (31), and drainvalve (10) 3-218