TM 10-3930-669-34 3-5. CYLINDER HEAD ASSEMBLY REPLACEMENT (CONT). WARNING Use    care    when    installing    springs. Springs are under compression tension   and   can   act   as   projectiles when released and could cause sever injury. NOTE Pushrod    cover    tubes    are    installed one  at  a  time.    Both  are  installed  the same way. (5)   Position   compression   spring   (16)   on   pushrod cover tube (15) and compress spring with spring compressor. (6)   Position  two  preformed  packings  (17)  and  cap (18) on pushrod cover tube (15). NOTE Position  pushrod  cover  tube  into  the crankcase first, then into the cylinder head for easy installation. (7)   Install  pushrod  cover  tube  (15)  in  cylinder  head (6) and remove spring compressor. 3-40