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REASSEMBLY - TM-5-3895-374-24-2_565
REPLACEMENT PARTS LIST CONTINUED

TM-5-3895-374-24-2 M081 Asphalt Mixing Plant Manual
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TM 5-3895-374-24-2 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. REPLACEMENT PARTS LIST Page 3 - 1200







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