TM   10-3930-643-20 BRAKE  TROUBLESHOOTING  AND  MAINTENANCE.  (cont) 8-13. Parking   Brake   Control   Valve   to   Treadle   Valve   and   Transmission   Hoses, Lines   and   Fittings   (Sheet   1   of   12) This   task   covers: a.   Removal b . Cleaning/Inspection c.   Installation INITIAL  SETUP Tools Tool  Kit,  General  Mechanic’s Materials/Parts Cleaning   solvent   P-D-680 Automotive (App.  C,  Item  2) NSN   5180-00-177-7033 Clean   cloth   (App.   C,   Item   10) 1   3/8”   Wrench,   open   end Detergent   (App.   C,   Item   16) NSN   5120-00-277-2325 Small   tags   (App.   C,   Item   12) Bulk   tubing   (App.   D) Tie   strap   (3) Wood  block  (4) Torques Except   for   special   torques   shown, all   fasteners   are   tightened   to   a standard  torque. Refer   to Appendix  E. EQUIPMENT  CONDITION References TM   10-3930-643-10 Condition   Description Air   pressure   vented. REMOVAL 1. Make   sure   that   vehicle   will   not roll   or   shift.   Secure   with   wood b l o c k s. DEATH or   serious   injury   may   result   by your   failure t o    f o l l o w    t h i s procedure. Using   a   7/16”   open   end   wrench, loosen   nut   (2)   from   parking   brake control   valve   on   instrument   panel. Go  to  sheet  2 8-62