TM 5-3810-207-20/TO 36C23-3-37-12 294.  Air Compressor Adjust the air compressor belt (TM 5-3810-207-10). 295.  Front and Roar Broke Chambers a. Removal. (1)   Disconnect the brake chamber rod from slack adjuster (par.  304). (2)   Remove     the     front     and     rear     brake chambers as instructed on figure 181. b. Cleaning and Inspection. (1)   Clean     all     parts     with     an     approved cleaning solvent. (2)   Inspect   the   brake   chamber   for   proper working condition.  Replace a defective brake chamber as necessary. (3)   Inspect   brake   chamber   and   hose   for cracks, holes, and deterioration of hose. (4)   Replace all defective parts as necessary. c. Installation. (1)   Install the front and rear brake chambers as illustrated on figure 181. (2)   Connect  the  brake  chamber  rod  to  the slack adjuster (par.  304). 296.  Quick Release Valve a. Removal.  Remove the quick release valve as instructed on figure 182. b. Cleaning and Inspection. (1)   Clean  the  quick  release  valve  with  an approved cleaning solvent. (2)   Inspect    the    quick    release    valve    for breaks, damaged threads, proper operation,  and  other  damage.    Replace defective quick release valve and mounting hardware. c. Installation.    Install  the  quick  release  valve as illustrated on figure 182. 297.  Tractor Protection Valve a. Removal.      Remove   the   tractor   protection valve as instructed on figure 183. b. Cleaning and Inspection. (1)   Clean    the    protection    valve    with    an approved cleaning solvent. (2)   Inspect the protection valve for damaged     thread     holes     and     proper operation.        Replace    a    damaged    or defective protection valve as necessary. (3)   Inspect all mounting hardware for stripped or damaged threads. (4)   Replace all defective parts as necessary. c. Installation.    Install  the  tractor  protection  valve as illustrated on figure 183. 298.  Check Valves a. Removal. (1)   Disconnect   hoses   and   remove   tractor protection valve (par.  297). (2)   Remove the stoplight switch (par.  237). (3)   Remove  the  lower  double  check  valve (fig.    188)  by  turning  counterclockwise out of the tee. (4)   Remove    the    upper    check    valve    by turning    counterclockwise    out    of    the protection valve. b. Cleaning and Inspection.  Inspect the double check  valve  for  proper  operation  and  damaged  fitting holes.    Replace  a  damaged  or  defective  double  check valve as necessary. c. Installation. (1)   Install   the   upper   check   valve   to   the tractor protection valve by turning clockwise in the nipple (fig.  183). (2)   Install   the   lower   check   valve   to   the upper check valve by turning clockwise in the tee. (3)   Install  the  tractor  protection  valve  and connect hoses (par.  297). (4)   Install the stoplight switch (par.  237). 299.  Moisture Elector Valve a. Removal.      Remove   the   moisture   ejector valve as instructed on figure 183. b. Cleaning and Inspection. (1)   Clean the moisture ejector valve with an approved     cleaning     solvent     and     dry thoroughly. (2)   Inspect   the   moisture   ejector   valve   for proper  operation.    Replace  a  defective moisture ejector valve as necessary. (3)   Inspect all fittings and mounting hardware     for     stripped     or     damaged threads. Replace all parts as necessary. c. Installation.        Install    the    moisture    ejector valve as illustrated on figure 183. 234