TM  10-3930-643-34 ENGINE,  FUEL,  EXHAUST  AND  COOLING  TROUBLESHOOTING  AND  MAINTENANCE. 4-4. Cylinder  Head ASSEMBLY Assembly with Valves. (Sheet 13 of 18) 49. 50. 51. 52. 53. 54. 55. 56. Using a 13/16” wrench  handle, kets (21a) and socket and socket install two brac- bolts (21). Coat  12  studs  (20)  with  anti-seize compound. Coat back and sides of plugs (18 and 17) with silicone sealant. Using two 7/16” nuts and two 5/8” open end wrenches, a 13/16” socket, socket wrench handle and ball peen hammer,  install  12  studs  (20),  six sleeves (19) and plugs (18 and 17). Coat six intake valves-large head (14) and exhaust valves-small head (13) with clean engine oil. NOTE Valves must be installed in same location  from  which they  were removed. Install  valves  from  bottom  of cylinder head (6). Using a valve spring lifter tool, install 12 spring seats (12), springs (11), shields (10) and rotors (9) on valve stems. Compress  valve  springs (11) with valve spring lifter and install 24 keys (8). If necessary, tap top of valves with rubber or plastic mallet to seat keys (8). Go to sheet 14 4-41