TM 10-3930-669-34 WARNING Oil  will  spray  from  cylinder  ports  when  rod  is  moved  in  or  out.    Cover  ports  with  two  cleaning cloths to prevent oil from spraying.  Failure to comply may result in injury to personnel. CAUTION Do   not   allow   threaded   or   machined   surfaces   to   come   in   contact   with   other   metal   surfaces. Clearances   between   cylinder   components   are   very   small,   any   minor   damage   done   during disassembly could require component replacement or make assembly difficult. (3) Position   drain   pan   under   tilt   cylinder (3). (4) Move rod (4) out of cylinder (3) 1 in.  (3 cm). WARNING Use  extreme  care  when  removing  or installing springs and retaining rings. Springs and retaining rings are under tension   and   can   act   as   projectiles when    released    suddenly.        Ensure proper    eye    protection    is    worn    to prevent injury to personnel. (5) Remove  retaining  ring  (5)  and  spacer (6) from cylinder (3) and head (7). 15-31