1®SD-03-4508Bendix® SR-1™ Spring Brake Valve1/4 P.T.RES. #11/4 P.T. DELIVERY1/4 P.T. SUPPLYFIGURE 1 - BENDIX® SR-1™ VALVE EXTERIOR AND SECTIONAL VIEW
2FIGURE 2 - SYSTEM SCHEMATICFIGURE 3 - RESERVOIRS CHARGING - BELOW 55 P.S.I.PARK CONTROL VALVEMODULATORSUPPLY#1 SERVICE RESERVOIR#2 SERVICE RESERVOIRD
3FIGURE 5 - PARKING BRAKE SUPPLY DELIVERY LESS THAN 95 P.S.I.FIGURE 4 - RESERVOIRS CHARGING - ABOVE 55 P.S.I.OPERATION - CHARGING SPRING BRAKE ACTUATO
4FIGURE 7 - NORMAL SERVICE APPLICATIONFIGURE 6 - PARKING BRAKE SUPPLY DELIVERY EQUAL TO OR GREATER THAN 95 P.S.I.*Note: Other spring brake hold-off p
5OPERATION - SERVICE APPLICATION WITH LOSS OF NO. 1 RESERVOIR PRESSUREIf air pressure in the No. 1 service reservoir falls below approximately 55 P.S.
6OPERATION - PARKINGIf both systems #1 and #2 are intact and the park control valve is placed in the “park” or exhaust position, the Bendix® SR-1™ val
7LEAKAGE CHECKWith the air system fully charged and the parking control valve in the “release” position, coat the exhaust port and around the valve co
8BW1589 © 2012 Bendix Commercial Vehicle Systems Company LLC, a member of the Knorr-Bremse Group • 5/2012 • All Rights Reserved
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