TM 10-4320-310-145-10.INSPECT/REPLACE CYLINDER HEAD AND VALVE ASSEMBLY (Continued)DISASSEMBLY:Do not scratch the cylinder head sealing face.Scratches could cause poor sealing ofcylinder head and cylinder.1Press down cup (1) and remove collet halves (2) fromboth valves.2Remove valve spring (3), washer (4) and cap (5)from both valves.3Remove valve (6) from cylinder head (7).4Remove hexagon nut (1) from threaded stud (2).Remove threaded stud.5Use needlenose pliers to remove pin (3) with tenspring plates (4) and preformed packing (5) attached.6Remove and discard preformed packing (5).7Knock out pin (6) and remove decompression shaft(7) and pinion (8) from cylinder head (9).5-19
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