Bendix Commercial Vehicle Systems AR-2 ANTILOCK RELAY VALVE 8/11 - Manual (Page 5)

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FIGURE 5 - TRACTOR SERVICE BRAKES RELEASING - TRACTOR TRAILER COMBINATION
FIGURE 6 - AR‑2 ™ VALVE BRAKE PRESSURE DELIVERY
PREVENTIVE MAINTENANCE
GENERAL
Perform the tests and inspections presented at the
prescribed intervals. If the Bendix ® AR‑2 ™ valve fails to
function as described, or leakage is excessive, it should
be repaired or replaced with a new or genuine Bendix
remanufactured unit, available at any authorized parts
outlet.
EVERY 3 MONTHS, 25,000 MILES OR 900 OPERATING
HOURS
1. Remove any accumulated contaminates and visually
inspect the exterior for excessive corrosion and physical
damage.
2. Inspect all air lines connected to the AR‑2 ™ valve
for signs of wear or physical damage. Replace as
necessary.
3. Test air line fittings for excessive leakage and tighten
or replace as necessary.
4. Perform the Leakage Test described in this manual.
EVERY YEAR, 100,000 MILES, OR 3,600 OPERATING
HOURS
1. Perform the Operation and Leakage Tests described
in this manual.
WARNING! PLEASE READ AND FOLLOW
THESE INSTRUCTIONS TO AVOID PERSONAL
INJURY OR DEATH:
When working on or around a vehicle, the following
general precautions should be observed at all times.
1. Park the vehicle on a level surface, apply the parking
brakes, and always block the wheels. Always wear
safety glasses.
TRAILER
SUPPLY
VALVE
INLET-CLOSED
EXHAUST-OPEN
REAR AXLE SERVICE
CHAMBER
SERVICE
BRAKE
VALVE
ANTILOCK
CONTROLLER
INLET-OPEN
EXHAUST-OPEN/CLOSED
BENDIX ® M-21 ™
MODULATOR
TRACTOR
TRAILER
COMBINATION
BOBTAIL
TRACTOR
BRAKE VALVE DELIVERY PRESSURE (AR-2 ™
VALVE SERVICE PORT)
0 PSI
BRAKE CHAMBER
PRESSURE