TM  10-3930-643-34 HYDRAULIC  SYSTEM  TROUBLESHOOTING  AND  MAINTENANCE.  (cont) 12-6. Tilt Valve Assembly. (Sheet 5 of 8) CLEANING/INSPECTION l TOXIC/FLAMMABLE Dry  cleaning  solvent  P-D-680,  used for cleaning parts, is toxic and flammable. Use  only  in  well ventilated  areas.  Wear  protective goggles and gloves. Do not smoke or allow open flames or sparks in areas where cleaning solvent is used or stored. Avoid  contact with eyes, skin or clothing. If contact with eyes is made, flush with cold water and seek medical attention  immediately. If contact with skin or clothing is made, flush with cold water. If  you become  dizzy  while  using  cleaning solvent, get fresh air immediately. l COMPRESSED  AIR  HAZARD 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.). 24. Wipe  all  parts  with  clean  cloth moistened  with  cleaning  solvent  P-D- 680. Dry  thoroughly  with  compressed air. Refer to paragraph 2-8. All grooves and passages in housing (25) must be free of foreign matter. Go to sheet 6 12-46

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