4-53 TM   9-2815-202-34 b. c. (3) Install 10-32 x 1 inch bolt (10) in blower drive shaft(11). Remove snap ring (12) and extract blower drive shaft. Remove bolt. NOTE Place a rag below the hub and spring plate assembly to prevent bolts from falling into the  flywheel  housing (4) Remove three bolts (13) securing hub and spring plate assembly (14) to blower drive gear (15).  Remove  hub  and  spring  plate  assembly  (14). Disassembly Remove  three  bolts  (16)  securing  two  spring  plates  (17)  to  blower  drive  hub  (18). Cleaning/Inspection WARNING (1) (2) (3) l 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  frame  or  excessive  heat.  The  flash  point  is  100°F-138^oF (38^oC-50^oC).  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. l Compressed  air  used  for  cleaning  purposes  will  not  exceed  30  PSI. Use  only  with  effective  chip  guarding  and  personal  protective equipment  (goggles/shieid,  gloves,  etc). Clean  all  parts  with  dry  cleaning  solvent  P-D-680  and  dry  with  compressed  air. Examine  blower  drive  shaft.  Replace  blower  drive  shaft  if  splines  are  worn,  cracked,  or otherwise   damaged. Examine blower drive hub. Replace hub if cracked or damaged or if spline is cracked, worn, or  otherwise  damaged.