GENERAL PURPOSE PUMPS 32 AND 432 SERIES - LARGE MAINTENANCE AND REPAIR INSTRUCTIONS FIGURE 12  EXPLODED VIEW MODEL Q32, M32, AND N32 PUMP ITEM NAME OF PART ITEM NAME OF PART 1 Packing Gland Nut 17 Pipe Flange Gasket 2 Packing Gland Stud 18 Rotor Bearing Sleeve Washer 3 Grease Fitting 19 Rotor Thrust Washer 4 Packing Gland 20 Rotor and Shaft 5 Packing 21 Idler and Bushing 6 Lantern Ring 22 Idler Bushing 7 Packing Retainer Washer 23 Head Gasket 8 Bushing for Rotor Bearing Sleeve 24 Idler Pin 9 Rotor Bearing Sleeve and Bushing 25 Head and Idler Pin 10 Nut for Rotor Bearing Sleeve 26 Stud for Head 11 Stud for Rotor Bearing Sleeve 27 Nut for Head 12 Gasket for Rotor Bearing Sleeve 28 Grease Fitting 13 Casing 29 Relief Valve Gasket 14 Pipe Plug 30 Relief Valve 15 Stud for Flanges 31 Capscrew for Valve 16 Nut for Flanges should   always   be   used   in   installing   carbon   graphite bushings  Be  sure  the  bushing  is  started  straight.    DO NOT STOP  -the pressing operation until the bushing is in proper position.  Starting and stopping this operation invariably results in a bushing failure.  Carbon graphite bushings   with   extra   interference   fits   are   frequently furnished    for    high    temperature    operation.        These bushings must be installed by a shrink fit.  Heat the iron casing or idler to 875°  F.  and install cool bushings with an  arbor  press.    If  facilities  are  not  available  for  this temperature,    it    is    possible    to    install    with    450° F. temperature.    However  the  lower  the  temperature  the greater  the  possibility  of  cracking  the  bushing.    Check bushings   for   cracks   after   installation.      For   additional information     on     high     temperature     applications     see Engineering Service Bulletin ESB-3. All parts should be checked for wear before the pump is put   together.      When   making   major   repairs,   such   as replacing   a   rotor   and   shaft,   it   is   usually   considered advisable  to  also  install  a  new  head  and  idler.    When making minor repairs, where only an idler bushing and idler  pin  are  required.    other  new  parts  are  usually  not necessary.  When all the necessary parts are available. the pump can be assembled Reassembly 1.    Thrust  washers  used  in  Q,  M    and  N    size  pumps should  be  assembled  on  the  rotor  hub  and  rotor bearing  sleeve.    Put  the  plain  washer  on  the  two locating pins on the rotor hub.  Put the grooved face washer on the pins on the rotor bearing sleeve with the grooved face toward the rotor. 2.  Remove all burrs and rough surfaces from the rotor and  shaft  and  assemble  in  the  casing.    Start  the shaft   through   the   casing   or   rotor   bearing   sleeve bushing and slowly turning the rotor.  push it into the casing as far as it will go. 3.    Place  the  head  gaskets  on  the'  head.    The  proper amount  of  gaskets  should  be  used  to  provide  the necessary end clearance within the pump so it turns freely with no appreciable end play.  The Viking Pump Division, Houdaille Industries, Inc.• Cedar Falls, Iowa 50613 U.S.A.