TM9-2815-202-34 4-37.  TURBOCHARGER  REPAIR  (Cont) (11) (12) (13) (14) (15) (16) (17) (18) Bend down tangs on four locking plates (20). Remove four bolts (21) and locking plates (20) securing backplate (5) to center housing (2). Discard locking plates. Remove backplate (5) from center housing (2) by tapping it lightly. Remove seal ring (22) from groove in center housing (2). Discard seal ring. Remove thrust spacer (23) and two piston rings (24) from backplate (5). Discard piston rings. Remove thrust collar (25) and thrust washer (26). Discard thrust washer. Remove bearing (27), bearing washer (28), and retaining ring (29) from center housing (2). Discard bearing, washer, and retaining ring, If necessary, remove two pins (30) from center housing (2). Remove two retaining rings (31), bearing washer (32), and bearing (33) from turbine end of center  housing  (2).  Discard  retaining  rings,  bearing  washer,  and  bearing. b.  Cleaning l l 4-178 Dry cleaning goggles and contact with solvent  P-D-680  is  toxic  and  flammable.  Wear  protective gloves  and  use  only  in  a  well-ventilated  area.  Avoid skin, eyes, and clothes and don’t breathe vapors. Do not use  near  open  flame  or  excessive  heat.  The  flash  point  is  100^oF-138°F (38^o-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. 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).