Bendix Commercial Vehicle Systems QR-1 QUICK RELEASE VALVES 5/10 - Manual (Page 2)

2
PREVENTIVE MAINTENANCE
Important: Review the Bendix Warranty Policy before
performing any intrusive maintenance procedures. The
warranty may be voided if intrusive maintenance is
performed during the warranty period.
No two vehicles operate under identical conditions, as
a result, maintenance intervals may vary. Experience is
a valuable guide in determining the best maintenance
interval for air brake system components. At a minimum,
the QR-1
® valve should be inspected every 12 months or
3600 operating hours, whichever comes fi rst, for proper
operation. Should the QR-1
® valve not meet the elements
of the operational tests noted in this document, further
investigation and service of the valve may be required.
OPERATING AND LEAKAGE TESTS
While holding a foot brake valve application:
1. Coat the exhaust port with a soap solution; leakage of
a 1" bubble in 3 seconds is permitted.
2. Coat the body and cover with a soap solution. No
leakage is permitted between body and cover.
If the valve does not function as described, or if leakage
is excessive, it is recommended that it be replaced with
a new or remanufactured unit, or repaired with genuine
Bendix
® parts.
GENERAL SAFETY GUIDELINES
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.
2. Stop the engine and remove ignition key when
working under or around the vehicle. When
working in the engine compartment, the engine
should be shut off and the ignition key should be
removed. Where circumstances require that the
engine be in operation, EXTREME CAUTION should
be used to prevent personal injury resulting from
contact with moving, rotating, leaking, heated or
electrically charged components.
3. Do not attempt to install, remove, disassemble
or assemble a component until you have read
and thoroughly understand the recommended
procedures. Use only the proper tools and observe
all precautions pertaining to use of those tools.
4. If the work is being performed on the vehicle’s
air brake system, or any auxiliary pressurized air
systems, make certain to drain the air pressure from
all reservoirs before beginning ANY work on the
vehicle. If the vehicle is equipped with an AD-IS
®
air dryer system or a dryer reservoir module, be
sure to drain the purge reservoir.
5. Following the vehicle manufacturer’s recommended
procedures, deactivate the electrical system in a
manner that safely removes all electrical power
from the vehicle.
6. Never exceed manufacturer ’s recommended
pressures.
7. Never connect or disconnect a hose or line
containing pressure; it may whip. Never remove
a component or plug unless you are certain all
system pressure has been depleted.
8. Use only genuine Bendix ® replacement parts,
components and kits. Replacement hardware,
tubing, hose, fi ttings, etc. must be of equivalent
size, type and strength as original equipment and
be designed specifi cally for such applications and
systems.
9. Components with stripped threads or damaged
parts should be replaced rather than repaired. Do
not attempt repairs requiring machining or welding
unless specifi cally stated and approved by the
vehicle and component manufacturer.
10. Prior to returning the vehicle to service, make
certain all components and systems are restored
to their proper operating condition.
11. For vehicles with Automatic Traction Control (ATC),
the ATC function must be disabled (ATC indicator
lamp should be ON) prior to performing any vehicle
maintenance where one or more wheels on a drive
axle are lifted off the ground and moving
.
REMOVING AND INSTALLING
REMOVING
1. Block vehicle wheels and/or hold vehicle by means
other than air brakes.
2. Drain all air brake system reservoirs.
3. Disconnect air lines from valve.
4. Remove mounting bolts, then the valve.
INSTALLING
Mount the valve with exhaust port pointing down; securely
tighten mounting bolts.
Connect the air lines to valve (brake valve application line
to top port; brake chamber line to side ports.)