Quantcast A.    REMOVAL - TM-9-2815-257-24_104

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ARMY TM 9-2815-257-24 AIR FORCE TO 38G1-128-2 MARINE CORPS TM 10155A/2815-24/3 5-26 5-11.  CYLINDER HEAD MAINTENANCE  -  cont. A.    REMOVAL. 1. Release  cylinder  head  (1,  Figure  5-17)  from  studs  (6)  by  removing  nuts  (2,  3)  and  washers  (4,  5).   Carefully remove cylinder head from studs and place on a clean work surface. 2. Remove and discard O-ring (7) and cylinder head gasket (8). 3. Slide exhaust valve (16) and inlet valve (15) out of cylinder head (1). 4. Remove valve cap (9) and cotter assembly (10) from inlet valve (15).   Valve  springs  are  under  high  pressure.    Use  caution  and  remove  spring  retainers  slowly.   Failure to observe this warning can cause serious injury to personnel. 5. Compress spring (12) using compression tool and carefully remove spring retainer (11).  Slowly release hold on compression tool to release spring tension.  Remove spring. 6. Remove valve stem seal (13) and washer (14) from inlet valve. 7. Repeat steps 4 through 6 for exhaust valve (16). 8. Remove air intake pipe studs (17) from cylinder head (1) only if replacement is required. B.    CLEANING. Cleaning solvents are flammable and toxic to eye, skin, and respiratory tract.  Skin and eye protections are required when working in contact with cleaning solvents.  Avoid repeated or prolonged contact.  Work in well ventilated area only.  Keep away from heat, sparks, and open flame.  Do not smoke while using cleaning solvent.  Failure to observe this warning can result in injury or death to personnel. 1. Clean cylinder head components with cleaning solvent and a clean rag.  Allow to air dry. 2. Remove carbon deposits from cylinder head (1, Figure 5-17) and valves (15, 16) using a wire brush.  Use care to prevent damage to surfaces. 3. Remove all old gasket material from crankcase and cylinder head mating surfaces. WARNING WARNING


 


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