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ARMY TM 9-2815-252-24 AIR FORCE TO 38G1-92-2 i.  Lift off cylinder head (6, FIGURE 3-28) and gasket (7).  Discard gasket. 3-27.2.  Disassembly. a.  Remove pushrod tubes (8, FIGURE 3-28), seals (9), washers (10) and tappets (11) from crankcase. b.  Remove seals (12) from cylinder head (6).  Discard seals (12) c.  If necessary, remove capscrew (13) and washer (14). d.  Position head upright on bench and place a suitable block of wood under head of valve (15 or 16). Warning Do not stand in front of valve springs while compressing them.  Failure to follow this warning could result in personal Injury. NOTE If  valves  are  to  be  reused,  tag  them  with  cylinder  number  from  which  they  were  removed. Manufacturer recommends that all valves and springs be replaced during a major overhaul. e.  Using standard valve spring compressor tool remove each valve as follows: (1)  Push down on tool until collets (17) can be removed. (2)  Gently release tool.  Remove carrier (18), spring (19), seal (20), and plate (21).  Discard seal. (3)  Turn cylinder head (6) over and remove valve (15 or 6) f.  Insert hex key (allen wrench) into breather tube (23) to support bore of tube.  Using pliers, remove breather tube(s) (23). FIGURE 3-29.  Valve Guide Tool and Depth Stop 3-27.3.  Inspect and Measure. a.  Using appropriate measuring devices, check components listed in TABLE 3-4 for wear.  Replace components that exceed maximum clearance. 3-57


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