TM   10-3930-643-20 FRAME AND TOWING ATTACHMENTS TROUBLESHOOTING AND MAINTENANCE 11-6. Bolster   Lines   and   Fittings.   (Sheet   2 REMOVAL 1. Using   a   5/16”   open   end   wrench, remove   two   couplings   (1)   from   inside bolster    frame. 2. Remove  two  grease  fittings  (2)  from couplings   (1). 3. Remove   nut   (3),    washer   (4)   and   clamp (5)   from   inside   bolster   frame. 4. Remove   two   elbows   (6),   tubes   (7)   and elbows   (8). CLEANING/INSPECTION 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. of   3) Go  to  Sheet  3 11-25

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