TM 10-3930-671-24 NOTE Be  sure  to  use  the  correct  flow  control  cartridge  for  the upright  height  installed  on   the   truck.   Refer   to   upright deck number stamped on the outer rail assembly. 8. Loosen  and  remove  the  load  drop  check  valve plug on the side of the valve body. Torque specification: 25 Ib-ft (34 Nom). 9. Remove  the  O-ring,  the  check  valve  spring  and poppet. 10. Remove   the   adjustable   pilot   relief   valve.   To remove the relief valve parts, loosen the locknut and  then  remove  (turn)  the  adjusting  screw  out of the valve body. 11. Carefully   remove   the   adjuster   shims   and   the relief   valve   plunger.   Then,   remove   the   seal, valve  spring  and  poppet.  Be  sure  to  keep  the parts in correct order as removed. NOTE •    Be sure that the relief valve adjuster shims are   saved   and   correctly   installed   when valve  is  reassembled.  These  shims  must always be in place for correct operation of the valve. •    The  pressure  relief  setting  must  be  reset after   reassembly   and   installation   in   the truck. F-468