Quantcast 2-21.  CYLINDER  HEAD  AND  VALVE  REPAIR

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TM 9-2815-237-34 2-21.  CYLINDER  HEAD  AND  VALVE  REPAIR This  task  covers: a. Disassembly d. Refacing Valves b. Cleaning e. Grinding Valve Seats c.  Inspection f. Assembly INITIAL  SETUP Tools General  mechanic’s  tool  kit: automotive  (Appendix  E,  Item  1) Valve  spring  compressor (Appendix  E,  Item  22) Bench grinder (Appendix E, Item 23) Rotary wheel wire brush (Appendix  E,  Item  24) Electric  drill  (Appendix  E,  Item  25) Rotary end wire brush (Appendix E, Item 26) Valve spring tester (Appendix E, Item 27) Straightedge (Appendix E, Item 15) Feeler gauge (Appendix E, Item 13) Dial indicator (Appendix E, Item 10) Valve face grinding machine (Appendix E, Item 28) Valve seat grinding kit (Appendix E, Item 29) Materials/Parts Sixteen  valve  seals  (Appendix  D,  Item  47) Water jacket cover gasket (Appendix D, Item 20) Lubricating oil OE/HDO (Appendix B, Item 13) Pipe sealing compound (Appendix B, Item 17) Manual  References TM 9-2815-237-34P Equipment  Condition Engine disassembled into subassemblies (para.  2-15). NOTE The  cylinder  head  and  valve  repair  procedures  for  6.5L  engines,  1990  and above  6.2L  engines  and  previous  model  engines  are  basically  the  same. Any  differences  in  procedures  are  noted.  Refer  to  engine  decal  model number  on  left  rocker  arm  cover  before  ordering  replacement  parts. a. Disassembly 1. 2. 3. 4, 5. 6. 7. 2-62 Using valve spring compressor, compress intake valve spring (3) and remove valve keys (7). Release  valve  spring  compressor  slowly. Remove valve cap (6), shield (4), valve spring (3), valve spring shim (2), and valve seal (5) from intake  valve  (16).  Discard  valve  seal  (5). NOTE Valves  must  be  installed  in  the  same  location  they  were  removed  from. As  each  valve  is  removed,  place  on  numbered  board  or  stand. Remove  intake  valve  (16)  from  cylinder  head  (1). Repeat  steps  1  through  3  for  remaining  intake  valves. Using valve spring compressor, compress exhaust valve spring (13) and remove valve keys (8). Release  valve  spring  compressor  slowly. NOTE l Valve caps on exhaust valves are rotaters. l Perform step 6 for 6.5L and 1990 and above 6.2L engines only. 6.5L engine  has  another  seal  as  indicated  in  step  6. Remove valve cap (9), shield (11), valve stem seal (12), valve spring (13), valve spring shim (14), seal  (17),  and  valve  seal  (10)  from  exhaust  valve  (15).  Discard  valve  seal  (10). Remove valve cap (9), shield (11), valve spring (13), valve spring shim (14), and valve seal (10) from exhaust  valve  (15).  Discard  valve  seal  (10).


 


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