Table   17-1.   Fuel-Burning   Winterization   Kit   Troubleshooting   Chart   (Cont) Malfunction 11.    (Continued) 12.   Leakage. 13.   Motor   failure. Probable   cause c. d. e. a. b. a. b. c. Motor  lag,  low  rpm Scored   cam   ring   bore. Foreign   matter   in   pump blade  slots. Face   of   seal   cage   scored, or  damaged  seal  “O” ring. Seal  face  of  adapter scored. Worn   brushes. Worn   bearings. Burned   armature. Corrective   action c.  Check  motor  brushes  for  excessive  wear. d.  Replace  the  cam  ring. e.  Remove  pump  from  motor:  disassemble and  clean  pump  and  filter. a.  Disassemble  and  inspect  seal  cage  face and   “O”   ring.   Refinish   or   replace   as required. b.   Disassemble   and   inspect   seal   surface, Refinish   or   replace   the   adapter. a.   Remove   and   replace. b.   Replace   motor. c.   Replace   motor. 17-7.   Heater   Assembly   and   Component   Inspection. a.  Inspect  regulator  valve  leaks  or  damaged threads.   Check   resistance   of   solenoid   coil.   Resist- ante  must  be  150  ohms. (1)   Inspect   nozzle   orifice   for   damaged   threads and  obstruct  ion  at  pin  holes.  Pin  hole  diameter  is 0.012  inch. (2)   Inspect   sintered   filter   for   clogged   or   damaged condition. b.   Flame   Switch   and   Quartz   Rod   Inspection. — (1)   Inspect   flame   switch   for   distorted   or   broken springs,   loose   flame   pivot   points   or   stripped   threads and   cracked   or   damaged   insulation.   Check   flame switch   for   continuity. (2)  Inspect  quartz  rod  for  damage  or  burned condition. c.   Inspect   pump   and   motor   assembly   for   damaged threads   and   other   damage. (1)   Pump   inspection. (a)   Inspect   adapter   for   damaged   or   scored face,   warped   condition,   damaged   seal   face   and   for motor   shaft   bore   wear.   Face   of   adapter   must   be parallel  within  0.001  inch.  Adapter  bore  diameter must  be  0.315  to  0.318  inch. Adapter  face  must  be parallel   with   rotor   side   of   adapter   within   0.001   inch per   inch. (b)   Inspect   rotor   and   rotor   blades   for   ex- cessive   wear. See  table  17-2  and  inspect  rotor  and blades   for   proper   dimensions. (c)   Inspect   seal   cage   for   scored   or   damaged face.  Remove  all  imperfections  by  lapping,  or  replace seal   cage. (d)  Inspect  cam  ring  and  port  plate  for damaged,  scored,  or  warped  position. (2)  Motor  assembly  inspection. (a)   Inspect   fan   for   damaged   blades,   cracks, and   breaks. (b)   Inspect   motor   for   damaged   receptacle and   worn   brushes. d.   Inspect   burner   chamber   for   defective   threads, or  burned  or  damaged  condition. e.   Inspect   heat   exchanger   for   damage   or   warpage. 17-8.   Repair. a.   Replace   all   gaskets,   seal   rings,   motor   brushes and-ceramic  vaporizer  at  each  overhaul. b.  Seal  faces  of  adapter  and  seal  cage  can  be dressed   to   remove   minor   nicks,   scratches   or   scoring. Remove   only   material   necessary   to   clean   seal   face. c.   Replace   all   parts   that   do   not   pass   inspections in   paragraph   17-7   above   and   all   electrical   components that   do   not   pass   electrical   tests   as   outlined   in   test procedure,   paragraph   17-11   which   follows. (1)   Replacement   of   terminal   board   and   limit switch. 17-3