1 SD-03-4514Bendix® SR-4™ Spring Brake Control ValveDESCRIPTIONThe SR-4™ valve is provided in two different confi gurations. Type 1 (Fig. 1A) incorpora
2FIGURE 2 - SR-4™ VALVE CROSS-SECTIONAL SCHEMATICSPRING BRAKECHECK VALVE “C”TRAILER SUPPLY LINEANTI-COMPOUND LINERES. #2PRESSURE PROTECTION PISTON SPR
3FIGURE 3 - SR-4™ VALVE ANTI-COMPOUNDING PLUMBINGTRAILER SUPPLY LINERES. #2R-12™ RELAY VALVETRAILER SERVICE LINEANTI-COMPOUNDING CONNECTIONSINGLE CHEC
44. Close the drain cock on the trailer #1 reservoir, recharge the system, stop the engine and open the drain cock on the #2 reservoir. Again, the t
5FIGURE 4EXHAUST PORTIF EQUIPPED(17 - SCREW)METAL I.D. TAG1CHECK VALVE “C” 26SR-4™ VALVE DISASSEMBLY (TYPE 1 REFER TO FIG. 4)REMOVAL AND DISASSE
6DISASSEMBLY TYPE 2 SR-4™ VALVE (REFER TO FIG. 5)1. Remove and save the eight cap screws holding the two spring retainers in place. Remove the sprin
7ASSEMBLYPrior to reassembling the SR-4™ valve, lubricate all o-rings, o-ring grooves, piston bores, and metal to metal moving surfaces with Bendix si
8INSTALLATION1. Clean air lines connecting to valve.2. Inspect all lines and/or hoses for damage and replace as necessary.3. Install valve and t
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