TM   10-3930-643-20 BRAKE  TROUBLESHOOTING  AND  MAINTENANCE.  (cont) 8-10. Treadle,   Treadle   Valve   and   Check   Valves   (S/N   2000   and   below).   (Sheet   1 of   8) This   task   covers: a.   Removal b . Cleaning/Inspection c.   Installation INITIAL  SETUP Tools Tool   Kit,   General   Mechanic’s Automotive NSN   5180-00-177-7033 Materials/Parts Cleaning   solvent   P-D-680 (App.   C,   Item   2) Clean   cloth   (App.   C,   Item   10) Detergent   (App.   C,   Item   16) Small  tag  (App.  C,  Item  12) Cotter   pin   (2) 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. Go   to   sheet   2 8-42