SECTION J Balancer Unit On certain applications a balancer unit is incorporated    in    the    engine    sump,    from    which    the lubricating oil pump is driven. It   is   important   to   note   that,   on   some   of   these applications, a crankshaft is fitted which has no balance weights,    as    distinct    from    the    crankshaft    on    other applications  which  incorporates  balance  weights  which are forged in the manufacturing process. When replacing a crankshaft, the correct type should be fitted as determined by the displaced crankshaft. It  is  also  important  to  note  that  balancer  units  vary according to which side of the engine, the lubricating oil filter  is  fitted.    When  replacing  a  balancer  unit,  always ensure that the correct type is being fitted. To Remove Remove the lubricating oil sump. Remove  the  balancer  unit  assembly,  complete  with the lubricating oil pump. To Dismantle Remove the seven setscrews and washers securing the lubricating oil pump to the balancer unit. Remove  the  oil  pump  complete  with  backplate  and driving   gear,   if   possible.      Should   the   backplate   and driving  gear  remain  in  position  on  the  balance  unit  they must be removed separately. From the front of the balancer unit, remove the idler gear hub retaining nut or setscrews. Remove   the   idler   gear   hub,   idler   gear   and   thrust plate. Remove the two socket headed grubscrews in each of the balance weights. Press  out  each  of  the  shafts  in  turn,  towards  the drive  end,  taking  care  that  the  keys  in  the  shafts  do  not foul  the  bushes  in  the  drive  end  of  the  balancer  frame. Insufficient    care    could    result    in    the    bushes    being damaged   and   this   would   mean   replacement   of   the complete frame assembly. Both  balance  weights  may  now  be  lifted  from  the balancer frame, complete with their respective gears. Should  it  be  necessary  to  renew  either  the  balance weights   or   coupling   gears,   remove   the   three   socket headed   capscrews   in   each   balance   weight   assembly and take off the coupling gears. Remove  the  two  thimbles  which  locate  between  the frame and cylinder block. Remove   the   seven   plugs   from   the   oilways   in   the balance frame and clean out the oilways. Important When   refitting   the   socket   headed   capscrews which   secure   the   coupling   gears   to   the   balance weights,  also  the  socket  headed  grubscrews  in  the balance weights and the idler gear and hub securing stud,   "Loctite"   grade   A,   should   be   used   on   the threads in the following manner: — Use of "Loctite" Thoroughly clean both male and female threads with a  suitable  degreasing  fluid  (not  kerosene),  allowing  15 minutes  for  it  to  dry.    It  is  recommended  that,  where possible.  "Locquic" Q Activator be used for this purpose as it will considerably reduce the curing time. Apply  a  light  coating  of  "Loctite"  grade  A,  to  both male   and   female   threads,   fit   the   stud   or   screw   and tighten to the .specified torque. A  curing  period  of  24  hours  (1  hour  if  "Locquic"  Q Activator has been used) at room temperature must now be allowed before the engine is started. To Re-assemble the Unit Note Replacement bushes for the balancer frame are not serviced separately and if    wear    is    evident,    a    replacement balancer   frame   assembly   must   be obtained, complete with bushes already line-bored. Some later balancer    units    may    have    needle bearings fitted in place of bushes and are not interchangeable with bushes. Where   needle   race   bearings   are   fitted,   then   the balancer  unit  drive  and  driven  shafts,  needle  bearings, keys  and  oil  pump  gears  must  be  changed  after  5,000 hours operation. Current     balancer     units     have     reversed     balance weights  where  the  gears  are  fitted  to  the  rear  of  the weights  instead  of  the  front  as  shown  in  Fig.  J.1.  and thicker section roller race bearing are fitted.