Bendix Commercial Vehicle Systems ADB22X-V Air Disc Brakes - Manual (Page 22)

22
FIGURE 40 - RUNNING CLEARANCE ADJUSTMENT
5.2.18 Using a 10 mm., six-point box wrench, turn the
Shear Adapter (61) clockwise until the pads contact
the rotor. Note: Do not use an open-ended wrench
as this may damage the adapter. (See Figure 40).
5.2.19 Using the same tool, turn the Shear Adapter (61)
counter-clockwise and listen for the sound of 3
clicks as the mechanism backs-off (increases) the
running clearance. (See Figure 37).
5.2.20 Select the correct replacement adjuster cap from
those supplied with the kit. Lightly grease adjuster
cap with Renolit HLT2 white grease (part number
14525) and install the cap.
5.2.21 Push the new pad retainer bar (11) into the groove
of the caliper. Press down on the pad retainer bar,
and insert the pad retainer pin (44), with the pin
pointing downwards, where possible. Install the
supplied washer (45) and then the spring clip (26).
(See Figure 34).
5.2.22 Apply and release the brakes. The hub should
turn easily by hand after applying and releasing the
brake.
5.2.23 Re-check the running clearance. Readjust if
necessary.
5.2.24 Reinstall the wheel, following the vehicle manual
instructions.
WARNING!
The brake pads and rotor must be maintained within
the recommended wear limits. Failure to monitor wear
and replace the brake pads and rotor when required
may result in diminished brake performance.
5.3 CALIPER/CARRIER/ACTUATOR
ASSEMBLY
CAUTION: Follow all safe maintenance practices,
including those listed on page two of this document.
Park the vehicle (by other means than the foundation
brakes) on level ground and chock the wheels.
CAUTION: When using a hoist to support the air disc
brake, do not attempt to use the pad retainer bar as a
bracing point. It is not designed to support the weight
of the brake. Use instead a brace (or chain) wrapped
around the entire brake to attach the hoist.
5.3.1 In all cases check that the current hose routing
arrangement does not restrict the full travel of the
caliper before beginning work on the assembly.
5.3.2 Remove the brake pads (See Section 5.2).
5.3.3 (See Section 5.4) . If the actuator used is a spring
brake, following the manufacturer’s guidelines, cage
the spring. With all air pressure drained from the
system, disconnect the air hoses from the brake
chamber.
Vertical Mounting Bolt Style
Mounting Bolts
(6 total - washers
not required)
Anchor Plate/
Torque Plate
Caliper/Carrier Assembly (Showing
Spring Brake Actuator )
Alignment
Bushing
Alignment
Bushing
FIGURE 41 - VERTICAL MOUNT CALIPER/CARRIER
5.3.4 See Figure 41. Supporting the air disc brake by
necessary means, remove the six (6) mounting
bolts/washers and discard. Note: Bendix strongly
recommends that during re-assembly these bolts
are replaced - see your vehicle manufacturer for
replacement hardware. Lift the caliper up off the
anchor plate.
The vertical bolt assembly includes an alignment bushing.
This bushing must be saved for re-use during re-
assembly of the brake. The bushing mounts in the torque
plate and maintains the correct alignment of the brake
assembly relative to the rotor.