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TM    9-2815-202-34 c.   Cleaning/lnspection WARNING l (1) (2) (3) (4) (5) (6) Dry  cleaning  solvent  P-D-680  Is  toxic  and  flammable.  Wear  protective goggles  and  gloves  and  use  only  in  a  well-ventilated  area.  Avoid contact  with  skin,  eyes,  and  clothes  and  don’t  breathe  vapors.  Do  not use  near  open  flame  or  excessive  heat.  The  flash  point  is  100°F-138oF (38°C-50oC).  If  you  become  dizzy  while  using  cleaning  solvent,  get fresh  air  immediately  and  get  medical  aid.  If  contact  with  eyes  is  made, wash  your  eyes  with  water  and  get  medical  aid  immediately. Compressed  air  used  for  cleaning  purposes  will  not  exceed  30  PSI. Use only  with  effective  chip  guarding  and  personal  protective equipment  (goggles/shield,  gloves,  etc.) Clean  all  parts  with  dry  cleaning  solvent  and  dry  with  compressed  air. Insure oil passage in gear support (11) is not clogged. Examine thrust washer (8) and thrust bearings (9 and 10). Replace if scored or worn. Using  micrometer,  measure  outside  diameter  of  blower  drive  gear  support  shaft  (11). Diameter  must  be  between  1.6240  inches  minimum  and  1.6250  inches  maximum.  Replace blower drive gear support if diameter is not within limits. Examine teeth of blower drive gear (5). Replace gear if teeth are scored, pitted, worn, or missing. Using  vernier  caliper,  measure  inside  diameter  of  blower  drive  gear  bearing  (5).  Replace gear  if  inside  diameter  is  more  than  0.005  inches  larger  than  outside  diameter  of  blower drive  gear  support  shaft. 4-63


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