TM 5-3895-373-34 2.60 REPAIR HOPPER LIFT CYLINDER - Continued. E. ASSEMBLE - Continued. 2. ASSEMBLE PISTON COMPONENTS. CAUTION Do    not    clamp    chrome    surface    of piston    rod    in    vise.        Damage    to chrome   surface   of   piston   rod   can result   from   contact   with   steel   vise jaws. a. Clamp head  end  of  piston  rod  (4)  in  bench  vise using vise jaw caps. WARNING Hydraulic oil can be moderately flammable  and  can  be  an  irritant  to the skin, eyes, and respiratory system.  Avoid prolonged exposure. Eye    protection    and    rubber    gloves must   be   worn   when    working    with hydraulic oil. b. Lubricate  piston  rod  (4),  cylinder  head  (1),  and piston (7) with clean hydraulic oil. CAUTION Be   careful   not   to   damage   preformed   packing when   sliding   over   threads.      Sharp   edges   of thread  can  cut  of  damage  preformed  packing. Damaged preformed packing will cause leakage and affect performance. c. Install  cylinder  head  (1)  and  sleeve  spacer  (9). Carefully   rotate   and   slide   cylinder   head   down length of piston rod (4) to pivot end. d. Install preformed packing (8) into packing groove on piston rod (4). e. Carefully     rotate     and     slide     piston     (7)     onto threaded end of piston rod (4). f. Install  self-locking  hex  nut  (6).    Using  a  socket wrench adapter, tighten hex nut to 200 lb-ft (271 N.m). CAUTION Internal seals and preformed packings are distorted during installation.  Allow one hour for seals and   preformed   packings   to   resume original shape after installing cylinder head and piston on piston rod. g. Remove  piston  rod  (4)  from  bench  vise.    Allow one   hour   for   installed   seals   and   packings   to resume their original shape. GO TO NEXT PAGE 2-832