TM  10-4320-344-24 3.8.20 Cylinder Head Assembly Replacement, Models 609-C and US636HCCD-1. This   task   covers: 3.8.20.1    Removal 3 . 8 .2 0 . 3     I n s t a l l a t i on 3.8.20.2    Adjustment INITIAL SETUP Tools General   Mechanic’s   Automotive Tool   Kit,    Appendix  B,    Section   III, Item  1 Torque   Wrench,   Appendix   B,   Section III,   Item   2 Angle-of-Turn   Indicator,   Appendix   B, Section   III,   Item   3 Pushrod   Tube   Spring   Compressor,   Appendix B,   Section   III,   Item   17 Square   Socket   Insert,   Appendix   B, Section   III,   Item   18 Material/Parts Grease,  Appendix  C,  Item  13 Rags,   Appendix   C,   Item   20 Solder,   Appendix   C,   Item   25 Tags,  Appendix  C,  Item  31 Washers   (TM   10-4320-344-24P) Ring   Spacer   (TM   10-4320-344-24P) Equipment   Conditions Top   Panel   Assembly   Removed,   paragraph 2 . 1 2 . 4. Right   Side   Panel   Assembly   removed, paragraph   2.12.6. Equipment    Conditions    (Continued) Fuel   Leakoff   Manifold   Assembly   removed, paragraph   2.21.7. Fuel   Injection   Nozzles   removed,   paragraph 2 . 2 1 . 9. Engine   Temperature   Transmitter   removed, paragraph   2.21.20   (609-C). Exhaust  Manifold  Pipes  removed,  paragraph 2.21.37. Intake   Manifold   removed,   paragraph 2.21.38. Cowling   Assembly   removed,   paragraph 2.21.40. Rocker  Arm  Assembly  removed,  paragraph 3 . 8 . 1 8 . General   Safety   Instructions Do   not   work   on   equipment   that   is   not securely   stabilized   to   prevent   rolling o r    s l i d i n g. To   prevent   burns   do   not   work   on   hot engine  components. Allow   engine   to   cool. Do  not  work  on  equipment  without  follow- ing   standard   shop   safety   practices. 3.8.20.1  Removal. To   prevent   malfunction   of   parts,    reinstall   pushrods   in   same   position   from which   they   were   removed. a. Tag   and   remove   two   pushrods   (Figure   3-42,   1). b . Using   square   recess   socket,    remove   two   plugs   (2)   and   washers   (3)   from   cylinder head   assembly   (4). Discard   washers   (3). Loosen   bolts   in   a   diagonal   sequence. c . Progressively   loosen   four   cylinder   head   bolts   (5). Remove   four   cylinder   head bolts   (5)   and   flat   washers   (6). 3-94 NOTE