TM 5-3895-374-24P SECTION 20 BULLETIN 20.96 R RELIEF VALVE INSTRUCTIONS DISASSEMBLY (1) Remove valve bonnet. (2) Measure and record the length of extension of the adjusting screw. (3) Loosen the adjusting nut and rotate the adjusting screw counter-clockwise until the spring pressure is released fully. (4) Remove the cap, retainer disc, spring and poppet, from the valve body.  Clean and inspect all parts for wear or damage and replace If necessary. REASSEMBLY Simply reverse the procedure outlined under disassembly  If  the  valve  has  been  removed  from  the pump  for  inspection,  be  sure  to  replace  in  the  same position.    The  bonnet  should  point  towards  the  suction port. PRESSURE ADJUSTMENT The  pressure  setting  on  any  relief  valve  supplied  on  a pump should be adjusted and/or checked for setting on individual  applications  as  the  valve  is  supplied  with  a spring that is adjustable within a given pressure range. To  check  the  setting  place  a  pressure  gauge  In  the discharge  line  between  the  pump  and  discharge  gate valve   Slowly   close   the   gate   valve   until   full   bypass pressure  is  obtained  This  pressure  should  be  greater than  the  normal  operating  pressure  If  not,  It  can  be Increased  by  turning  the  relief  valve  adjusting  screw Inward  until  the  desired  setting  is  achieved  After  the relief   valve   has   been   set,   the   locking   nut   can   be tightened and the bonnet can be re-assembled. When ordering relief valve springs, be sure to state the maximum operating pressure required. Model KK230 REPLACEMENT PARTS LIST ITEM NAME OF PART NO. 1 BODY 2 POPPET 3 SPRING 4 RETAINER DISC 5 ADJUSTING SCREW 6 ADJUSTING NUT ITEM NAME OF PART NO. 7 CAP 8 BONNET 9 GASKET (IPORT) 10 GASKET (CAP) 11 GASKET (BONNET) page C12 -5