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THRUST BEARING ADJUSTMENT
Figure 3-45.  Asphalt Metering and Transfer Systems

TM-5-3895-374-24-2 M081 Asphalt Mixing Plant Manual
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TM 5-3895-374-24-2 DISASSEMBLY Mark valve and head before disassembly to insure proper reassembly. 1. Remove valve cap. 2. Measure and record length of extension of adjusting  screw. Refer to "A" on Figures 15 and 16. 3. Loosen  locknut  and  back  out  adjusting  screw  until  spring pressure is released. 4. Remove bonnet, spring guide, spring and poppet from valve body.    Clean  and  inspect  all  parts  for  wear  or  damage  and replace as necessary. ASSEMBLY Reverse procedures outlined under Disassembly.  If valve is removed for repairs, be sure to replace in same position.  Relief valve adjusting screw cap must always point towards suction side  of  pump.    If  pump rotation is reversed, remove relief valve and turn end for end.  Refer to Figures 1, 2, and 3, page 1. PRESSURE ADJUSTMENT If a new spring is installed or if pressure setting of pressure relief valve is  to  be  changed  from  that  which  the  factory  has  set.    the  following instructions must be carefully followed. 1. Carefully remove valve cap which covers adjusting screw. Loosen  locknut  which   locks   adjusting   screw   so   pressure setting will not change during operation of pump. 2. Install    a    pressure    gauge    in    discharge    line    for    actual adjustment operation. 3. Turn  adjusting  screw  in  to  increase  pressure  and  out  to decrease pressure. 4. With   discharge   line   closed   at   a   point   beyond   pressure gauge,  gauge will show maximum pressure valve will allow while pump is in operation. IMPORTANT In ordering  parts  for  pressure  relief  valve,  always  give  model  number and serial number  of  pump  as  it  appears  on  nameplate  and  name  of part wanted.  When ordering springs, be sure to give pressure setting desired. WARRANTY Viking  warrants  all  products  manufactured  by  it  to  be  free from  defects  in  workmanship  or  material  for  a  period  of  one  (I)  year from  date  of  startup,  provided  that  in  no  event  shall  this  warranty extend  more  than  eighteen  (18)  months  from  the  date  of  shipment from  Viking.    If,  during  said  warranty  period,    any  products  sold  by Viking prove to be defective in workmanship or material under normal use and service, and if such products are returned to Viking’s factory at   Cedar   Falls,   Iowa,      transportation   charges   prepaid,   and   if   the products   are   found   by   Viking   to   be   defective   in   workmanship   or material,   they   will   be   replaced   or   repaired   free   of   charge,   F.O.B. Cedar Falls,  Iowa. Viking  assumes  no  liability  for  consequential  damages  of any  kind  and  the  purchaser  by  acceptance  of  delivery  assumes  all liability for the consequences of the use or misuse of Viking products by the purchaser, his employees or others.  Viking will assume no field expense for service or parts unless authorized by it in advance. Equipment    and    accessories    purchased    by    Viking    from outside  sources  which  are  incorporated  into  any  Viking  product  are warranted  only  to  the  extent  of  and  by  the  original  manufacturer’s warranty or guarantee, if any. THIS IS VIKING’S SOLE WARRANTY AND IS IN LIEU OF ALL   OTHER   WARRANTIES,   EXPRESSED   OR   IMPLIED,   WHICH ARE   HEREBY   EXCLUDED.      INCLUDING   IN   PARTICULAR   ALL WARRANTIES    OF    MERCHANTABILITY    OR    FITNESS    FOR    A PARTICULAR    PURPOSE.        No    officer    or    employee    of    IDEX Corporation or Viking Pump,  Inc.  is authorized to alter this warranty. Copyright 1984 MPC 2 5M 9-E8 VIKING PUMP INC • A Unit of IDEX Corporation • Cedar Falls Iowa 50613 U S A Printed in USA page 3-1222







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