ARMY  TM  9-2805-262-14 AIR  FORCE  TO  38G2-90-1 NAVY  NAVFAC  P-8-613-14E 5-7. Cylinder Head Assembly (cont). c. Repair. (figure 5-3) (1) Remove rooker shaft clip (1) and remove rocker shaft (2) and rocker (3). (2) Using  valve  spring  compressor,  compress  spring  (4),  remove  retainers  (5),  valve  (6),  roto  cap  (7),  and spring  (4). (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) Repeat step 2 for remaining valve. Remove  packing  screws  (8)  and  preformed  packings  (9). WARNING Drycleaning  solvent  PD-680  used  to  clean  parts  is  potentially  dangerous  to  personnel  and property. Avoid repeated and prolonged skin contact. Do not use near open flame or excessive heat. Flash point of solvent is 10O°F-1 38°F (38°C-60°C). Clean  all  items,  except  preformed  packings,  in  drycleaning  solvent  and  dry  thoroughly. Inspect all items for excessive wear, and replace worn or otherwise damaged items. Refer to table  5-2 for wear limits. Reseat valves in cylinder head to ensure proper sealing. Regrind valves as necessary. Refer to table  5-2. Install valve (6), spring (4), and roto cap (7). Using  valve  spring  compressor,  compress  spring  (4)  and  install  retainers  (5). Repeat steps 8 and 9 for remaining valve. Install  preformed  packing  (9)  and  packing  screws  (8). Install rocker (3), rocker shaft (2) and rocker clip(1). 5-10