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suggested rework
weigh scale mountaing

TM-5-3895-374-24-2 M081 Asphalt Mixing Plant Manual
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TM 5-3895-374-24-2 MODEL WB INSTALLATION, ALIGNMENT, & CALIBRATION CONVEYOR WEIGH SCALE 3-0 WEIGH SCALE ASSEMBLY 3-1) The  weigh  scale  troughing  idler  must  be  modified  prior  to  clamping  it  to  SYSTEMS’  weigh  scale  frame.    See procedure on drawing # WB00-00005 ’Suggested Rework’.  Complete modification as shown. 3-2) Assemble weigh scale, independent of conveyor in the following order.  See drawing # WB00-00004 ’Weigh Scale Mounting Assembly for Field Installation." 3-2A) Mount  load  cell  (Cable  End)  to  welded  frame  assembly  with  (4)  5/16  x  1  1/4’  hex  bolts  and  washers.    (Mating surfaces must be clean and free of foreign materials.) Torque bolts to 100-120 in/lb. 3-2B) Place 1/2" spacer on load cell.  (Mating surfaces must be clean and free of foreign materials.) 3-2C) Carefully set 7’ channel on 1/2’ spacer centered on weigh bridge assembly.  (Mating surfaces must be clean and free of foreign materials.) 3-2D) Secure channel to load cell with (4) 5/16 x 1 1/4 hex bolts and washers.  Center  channel  side  to  side  on  weigh scale frame.  Torque bolts to 100-120 in/lb. Note:  Carefully handle weigh scale assembly to avoid shock that may damage load cell. 3-2E) Center modified idler on the channel.  Install V-block clamping assembly (2 places), using (4) 1/2 x 2 1/4’ hex bolts with lockwashers.  Tighten securely. 4-0 WEIGH SCALE INSTALLATION and PRELIMINARY ALIGNMENT 4-1) Install  complete  weigh  scale  assembly  in  the  intended  position  on  conveyor.    Using  weigh  scale  as  template, carefully locate, mark, and drill (4) 9/16 dia.  holes in conveyor frame. 4-2) Mount  the  weigh  scale  in  position  using  (4)  1/2  x  2  1/4’  bolts  with  lock  and  flat  washers.    Install  3/8"  of  shims (supplied with weigh scale) below weigh scale mtg angles.  Hand tighten bolts at this time.  (Mating surfaces must be clean and free of foreign materials.) 4-3) Shim the approach and retreat idlers to approximately the same height as the weigh scale idler. Note:  The approach, retreat and weigh idler must all be higher than all the other conveyor idlers. SYSTEMS Equip.  Corp. Tel: (319) 568-6387 WB, 921006, page 3 (page 3 - 1270)







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