Bendix Commercial Vehicle Systems WS-20 WHEEL SPEED SENSOR 1/05 - Manual (Page 3)

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FIGURE 4 - WS-20 ™ WHEEL SPEED SENSOR INSTALLATION
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, fittings, etc. must be of equivalent
size, type and strength as original equipment and
be designed specifically 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 specifically 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.
REMOVAL
1. Unplug the cable assembly connector from its lead.
Lift the lock tab and pull on the connector until it
disengages.
2. Gently pry the sensor and bushing from the mounting
block.
INSPECTION
Look for any visible damage to the sensor, cable assembly,
connector, mounting block, and foundation brake. Repair or
replace any damaged components. Make sure the block is
securely attached to the axle housing.
SENSOR INSTALLATION
1. For increased corrosion protection we recommend that
a high-temperature rated silicon- or lithium-based grease
be applied to the interior of the mounting block, the
sensor, and to a new clamping sleeve.
2. Gently push (DO NOT STRIKE) the sensor into the
mounting block hole until it bottoms out on the face of
the tone ring. Secure the cable lead wire to the knuckle/
axle housing 3-6 inches from the sensor.
SPEED SENSOR
MOUNTING
BLOCK
100 TOOTH SPEED
SENSOR EXCITER
RING
WS-20 ™ SPEED
SENSOR (90 DEG.)
HUB ASSEMBLY
WS-20 ™ SPEED
SENSOR
100 TOOTH
EXCITER
MOUNTING
BLOCK
MAX. GAP
(SENSOR TO EXCITER)
.015 INCHES
BRAKE DRUM