8
FIGURE 9 - TYPICAL CR-16
™
AIR BRAKE SYSTEM
condition is normal while the AR-2
™
valve is transitioning
from the proportioning mode to the full delivery mode
and will only occur if the service application is SLOWLY
increased as described. Cycling will not occur or can be
stopped by increasing or decreasing service port
pressure.
9. Remove the test gauges from the AR-2
™
valve.
10. If the AR-2
™
valve fails to perform as described it should
be replaced or repaired using genuine Bendix
replacement parts or kits.
LEAKAGE TESTS
1. Build the air system pressure to governor cut-out. With
the dash mounted trailer supply valve activated for
tractor/trailer operation, apply a soap solution to both
exhaust ports (one in cover and one in body). The
leakage noted should not exceed a 1” bubble in less
than 3 seconds at either exhaust port.
2. Make and hold a full brake application and apply a soap
solution to both exhaust ports and around the cover
where it joins the body. The leakage noted should not
exceed a 1” bubble in less than 3 seconds at any exhaust
port with no leakage detected between the cover and
body.
VALVE REMOVAL
1. Park the vehicle on a level surface and block the wheels
and/or hold the vehicle by means other than the air
brakes.
2. Drain the air pressure from all vehicle reservoirs.
3. Identify, mark or label all air lines and wiring cables and
their respective connections on the valve or antilock
controller to facilitate ease of installation.
4. Disconnect all air lines and wiring.
5. Remove the AR-2
™
valve and controller assembly from
the vehicle.
VALVE INSTALLATION
1. Install all air line fittings and plugs making certain thread
sealing material does not enter the valve.
2. Install the assembled valve on the vehicle.
3. Reconnect all air lines and wiring cables to the valve
and controller assembly using the identification made
during VALVE REMOVAL step 3.
4. After installing the valve and controller assembly, test all
air fittings for excessive leakage and tighten as needed.
DASH CONTROL VALVES
BRAKE VALVE
M-21
™
MODULATORS
TRACTOR
PROTECTION
AR-2
™
WITH
CONTROLLER
