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BENDIX AR-2 ANTILOCK RELAY VALVE マニュアル
®
®
Bendix
AR-2
AntiLock Relay Valve
DELIVERY
FIGURE 1 - AR-2
ANTILOCK RELAY VALVE ASSEMBLY
DESCRIPTION
The AR-2
antilock relay is a specialized air brake valve
developed for use on antilock equipped tractors only. It is
essentially a BP-R1
"bobtail" brake proportioning relay valve
(Bendix Service Data Sheet SD-03-1067) with a modified
cover that permits direct attachment of a Bendix
controller such as the EC-15
antilock controller the resulting assembly is referred to as a
antilock controller relay assembly. For example when the
AR-2
valve is combined with the EC-15
controller, the resulting assembly is referred to as a CR-16
controller relay assembly.
While it is intended for use on antilock equipped tractors,
the AR-2
valve functions solely as an air brake relay and
contains no electronics of its own.
ANTILOCK CONTROLLER
MOUNTING HOLES(4)
MOUNTING
BRACKET
®
antilock
. When combined with an
electronic
SUPPLY
The AR-2
valve replaces the standard relay valve used to
control the rear axle service brakes and performs the standard
relay function during tractor-trailer operation. During tractor
bobtail operation, the AR-2
pressure to the lighter rear axle(s) brakes to improve vehicle
controllability and minimize rear axle(s) wheel skid before
antilock is required. The AR-2
braking control and reduces the number of times antilock is
actually needed.
Like the standard relay valve it replaces, the AR-2
and its attached antilock controller is normally mounted near
the service brakes it serves. A mounting bracket, furnished
with the valve, permits either frame or cross member
mounting. All air connections on the AR-2
with cast, embossed letters for ease of identification and
installation. The letter identification and air line connections
are shown below for reference.
CONTROL
DELIVERY
valve reduces brake application
valve provides added vehicle
valve are identified
SERVICE
valve
1