Bendix Commercial Vehicle Systems AR-1 ANTILOCK RELAY VALVE 01/11 - Manual

1
®
SD-13-4795
DESCRIPTION
The AR-1 ™ antilock relay valve (Figure 1) is a specialized
service brake relay valve. It is essentially an R-14 ® relay
valve with a special cover that permits direct attachment
of an antilock controller. When combined with an antilock
controller the resulting assembly is referred to as an
antilock relay controller. For example, when the AR-1
™
antilock relay valve is combined with the EC-30 ™ tractor
antilock controller the resulting assembly is referred to as a
CR-30
™ antilock relay controller. While intended for use on
antilock equipped vehicles, the AR-1 ™ antilock relay valve
functions solely as a service brake relay and contains no
electronics of its own.
In an air brake system, the AR-1 ™ valve serves as a
relay station to speed the application and release of
the service brakes. The valve is normally mounted in
proximity to the service actuators it serves. A mounting
bracket furnished with the valve permits either frame or
cross member mounting. All air connections on the AR-1
™
valve are identifi ed with cast, embossed letters for ease of
installation. The letter identifi cation and air line connections
are shown below for reference.
AR-1 ™ VALVE AIR CONNECTION
EMBOSSED
IDENT.
Supply (to reservoir) SUP
Delivery (to brake actuator) DEL
Service (to brake valve rear service
delivery)
SER
Like the R-14 ® relay valve, the AR-1 ™ valve incorporates
a quick release valve adjacent to the service port which
Bendix ® AR-1 ™ AntiLock Relay Valve
FIGURE 1 - AR-1 ™ ANTILOCK RELAY VALVE ASSEMBLY
EXHAUST PORT
SERVICE PORT
DELIVERY PORTS
SUPPLY PORT
TYPICAL
MOUNTING
BRACKET
SUPPLY PORT
EXHAUST PORT
DELIVERY
PORT
QUICK
EXHAUST
INLET/
EXHAUST
VALVE
RELAY
PISTON
SERVICE
PORT
QUICK/
EXHAUST DIA.
ANTILOCK
CONTROLLER
AR-1 ™
ANTILOCK
RELAY VALVE
AR-1 ™ VALVE
WITH ANTILOCK
CONTROLLER