TM 5-3895-374-24-2 TECHNICAL SERVICE MANUAL SECTION TSM 142.1 HEAVY-DUTY JACKETED BRACKET MOUNTED PUMPS PAGE 1 SERIES 225 and 4225 ISSUE B SIZES H-LL CONTENTS Introduction ...........................................................................1 Special Information ...............................................................2 Maintenance .........................................................................2 Packed Pumps......................................................................3 Mechanical Seal Pumps .......................................................6 Thrust Bearing Adjustment .................................................11 Installation of Carbon Graphite Bushings  ...........................11 Pressure Relief Valve Instructions ......................................11 INTRODUCTION The  illustrations  in  this  manual  are  for  identification  purposes only and cannot be used for ordering parts.  Obtain a parts list from   the   factory   or   a   Vikings   representative.      Always   give complete  name  of  part,  part  number  and  material  with  model umber and serial number of pump when ordering repair parts. The unmounted pump or pump  unit  model  number  and  serial number are on the nameplate. In   the   Viking   model   number   system,   basic   size   letters   are combined  with  series  number  (225  and  4225)  indicating  both unmounted or mounted pump unit. Model Number Chart UNMOUNTED PUMP UNITS PACKED  MECH. SEAL Units are designated by the un- H225 H4225 mounted pump model numbers HL225 HL4225 followed by a letter indicating K225 K4225 drive style. KK225 KK4225 V = V-Belt L225 L4225 D = Direct Connected LQ225 L04225 R = Viking Speed Reducer LL225 LL4225 P = Commercial Speed Reducer This manual deals only with Series 225 and 4225 Heavy-Duty Jacketed Bracket Mounted Pumps.  Refer to Figures 1 thru 16 for    general    configuration    and    nomenclature    used    in    this manual.  Pump specifications and recommendations are listed in   Catalog   Section   142,   Series   225   and   4225   Heavy-Duty Jacketed Bracket Mounted Pumps. FIGURE 1. Sizes H and HL FIGURE 2. Sizes K and KK FIGURE 3 Sizes LQ and LL VIKING PUMP, INC. • A Unit of IDEX Corporation • Cedar Falls Iowa 50163 USA page 3-1211