BENDIX AR-1 ANTILOCK RELAY VALVE Manual
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Bendix
AR-1
AntiLock Relay Valve
AR-1
ANTILOCK
RELAY VALVE
QUICK EXHAUST
DELIVERY PORTS
DESCRIPTION
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The AR-1
antilock relay valve (Figure 1) is a specialized
service brake relay valve. It is essentially an R-14
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 a antilock
relay controller. For example when the AR-1
valve is combined with the EC-30
the resulting assembly is referred to as a CR-30
relay controller. While intended for use on antilock equipped
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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
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
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SERVICE PORT
MOUNTING
SUPPLY PORT
EXHAUST PORT
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antilock relay
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tractor antilock controller
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valve serves as a relay
QUICK
EXHAUST
TYPICAL
BRACKET
SUPPLY PORT
FIGURE 1 - AR-1
with the valve permits either frame or cross member mounting.
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relay
All air connections on the AR-1
cast, embossed letters for ease of installation. The letter
identification and air line connections are shown below for
reference.
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AR-1
VALVE
AIR CONNECTION
antilock
Supply (to reservoir)
Delivery (to brake actuator)
Service (to brake valve rear service delivery)
Like the R-14
quick release valve adjacent to the service port which provides
for rapid exhaust of control air pressure from above the
AR-1
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VALVE
WITH ANTILOCK
CONTROLLER
EXHAUST PORT
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ANTILOCK RELAY VALVE ASSEMBLY
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valve are identified with
EMBOSSED IDENT.
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relay valve, the AR-1
ANTILOCK
CONTROLLER
QUICK/
EXHAUST DIA.
SERVICE
PORT
RELAY
PISTON
INLET/
EXHAUST
VALVE
DELIVERY
PORT
SUP
DEL
SER
valve incorporates a
1