Quantcast a.  Disassembly (Contd) - TM-9-2815-225-34P_145

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TM 9-2815-225-34&P 3-35.  CYLINDER HEAD AND VALVE REPAIR (Contd) LOCATION/ITEM ACTION REMARKS a.  Disassembly (Contd) 2.   Two locking nuts (29) and Remove from exhaust valve adjusting screws (30) crossheads (28). 3.   Two intake valve crossheads Remove from valve crosshead (22) and exhaust valve guides (8) on cylinder head (9). crossheads (28) WARNING Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa).  Use only with effective chip guarding and protective equipment such as goggles or shield, gloves, etc. Failure to comply may result in injury to personnel. 4.   Cylinder head assembly (1) a.  Steam clean and dry with compressed air. b.  Put into head holding Use head holding fixture (ST-583). fixture. NOTE Repeat steps 5, 6, and 7 for each intake or exhaust valve. 5.   Valve spring (4) Compress.   Use valve spring compressor (ST-448) (32) and head holding fixture (ST-583).  Stud of valve spring compressor (32) should be installed on screw hole (31).  Keep a firm hold on valve spring com- pressor (32) until valve collets (2) are removed. 6.   Two valve collets (2) a.  Tap head of valve (13) or (14) lightly to loosen. b.  Remove from valve and valve Use magnet if needed.  Discard spring guide (3). valve collets (2). 7.   Intake valve (13), exhaust Remove from cylinder head (9). As each valve is removed, place valve (14), valve spring (4), on numbered board or stand.  If and valve spring guides spacers are used, cylinder head (3) and (5), and spacers* has been resurfaced at one time. (33), if used NOTE Step 8 does not apply to No. 2 cylinder head. 8.   Two screws (26), cover plate Remove from cylinder head (9).   Discard preformed packings (24). (25), and two preformed packings (24) 9.   Four pipe plugs (27) Remove two from each end of No. 3 cylinder head has two pipe cylinder head (9). plugs in forward end only. 10.     Six expansion plugs (10), Remove from cylinder head (9). a.  Using hammer and punch, expansion plug (16), and hit outside diameter of expansion two expansion plugs (17) plugs to force one side out. b.  Use screwdriver or pliers to remove expansion plug from hole. Discard expansion plugs (10), (16), and (17). 3-114


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