TM 5-3895-374-24-2 SECTION IV PREVENTIVE AND CORRECTIVE MAINTENANCE 4.1 GENERAL This   section   contains   information   and   procedures   for preventive   and   corrective   maintenance.      The   unit   will operate   with   minimum   trouble   if   you   follow   a   sound preventive maintenance program. 4.2 PREVENTIVE MAINTENANCE CAUTION The feeder shall be electrically locked-out   of    service    prior    to    any maintenance or repair. 4.2.1 LUBRICATION A.  Speed Reducer Refer to Winsmith Engineering Service Bulletin IL-79 for operation and lubrication instructions. B.  Bearings Roto-Flo    Feeders    are    normally    furnished    with    pre- greased and sealed anti-friction ball bearings. Regreasing is not required.  When specifically requested on   the   order,   grease   fittings   are   furnished   and   are located   at   the   bearing   carrier.      Texaco   Multifak   #2 (1043SUS)  or  approved  equal  grease  may  be  used  for relubrication.        Remove    the    bearing    caps    prior    to regreasing  and  when  the  grease  begins  to  come  out  of the seals, the bearing will contain the correct amount of lubricant. Bearings    should    be    regreased    every    500    hours    of operation. C.  Chain The  roller  Chain  furnished  with  all  Roto-Flo  Feeders  is pre-lubricated  at  the  factory.    The  chain  shall  be  oiled periodically with a brush or spout can every 50 hours of operation.      A   good   grade   of   non-detergent   petroleum base oil should be used with the viscosity shown below: Ambient Temperature (°F) Lubricant 20-40 SAE 20 40-100 SAE 30 100-120 SAE 40 120-140 SAE 50 D.  Packing Glands Roto-Flo  Heavy  Duty  Feeders   are   normally   furnished with  graphite-asbestos  packing  without  grease  fittings. When specifically requested on the order, grease fittings are   furnished   and   are   located   at   the   packing   gland. Texaco   Multifak   #2   (1   043SUS)   or   approved   equal grease may be used for lubrication of the packing gland A   high   temperature   grease   shall   be   used   when   the product  temperature  exceeds  300°F.    Packing  shall  be greased every 40 hours of operation. 4.3.  CORRECTIVE MAINTENANCE 4.3.1.  PACKING The packing may be replaced in Meyer Roto-Flo Heavy Duty    Feeders    without    removing    feeder    from    the installation. A.   Remove packing gland stud nuts. B.   Pull packing gland nut back C.   Remove packing with packing hook D. Lantern rings, when furnished, have two tapped holes  on  the  circumferential  face  for  ease  of removal.    By  threading  two  screws  into  these holes the ring may be pulled out of the packing gland  Use  #4-40  screws  for  4  x  4  HD  feeder. Use  #10-24  screws  for  6  x  6  thru  22  x  22  HD feeders. E.   Install  new  packing  and  replace  lantern  ring  (if furnished). F.   Push packing gland nut into packing carrier. G.   Replace and carefully tighten gland stud nuts to compress  packing,  but  not  to  the  extent  that excessive drag is forced on the shaft. page 3 - 730