Bendix Commercial Vehicle Systems ADB22X-V Air Disc Brakes - Manual (Page 23)

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Air Disc Brake Attachment Hardware
Torque Plate Manufacturer Fastener Torque
Bendix Axial
Carrier Torque Plate
Fastener: M20 x 2.5 x 60 mm Class 10.9
Washer: Requires HARDENED 3 mm
(minimum thickness) for each bolt. 1
If the vehicle is using a Bendix
manufactured Axial Anchor Plate, with a
thickness of 1.14 in. (29 mm) where these
bolts are assembled, then a bolt with an
overall length of 2.36 in. (60 mm) will meet
these requirements
Use the manufacturer’s recommendations.
If unavailable, use phosphate
and oil fi nish fastener.
Pre-Torque: 20-60 ft-lbf [27-81 N·m]
Final Torque: 350-400 ft-lbf [475-542 N·m]
Bendix Vertical
Carrier Torque Plate
Fastener: M16 x 2.0 x 110 mm, Class 10.9
Washer: None required.
Use the manufacturer’s recommendations.
If unavailable, use plain and oil fi nish fastener.
Torque: 200-220 ft-lbf [271-298 N·m]
Trailer Torque Plate
Fastener: M20 x 2.5 x L Class 10.9
Length determination:
L = Torque Plate (TP) thickness + Carrier
engagement + Washer thickness
L
min
= TP thickness + 24 mm + 3 mm
L
max
= TP thickness + 29 mm + 3 mm
Washer: Requires HARDENED 3 mm
(minimum thickness) for each bolt. 1
Use the manufacturer’s recommendations.
If unavailable, use phosphate
and oil fi nish fastener:
Pre-Torque: 20-60 ft-lbf [27-81 N·m]
Final Torque: 350-400 ft-lbf [475-542 N·m]
CAUTION: The washer outside diameter must be less than 1.5 in (37.5 mm).
TABLE 4 - TORQUE PLATE FASTENERS AND TORQUE RECOMMENDATIONS (SEE MANUFACTURER’S RECOMMENDATIONS)
5.3.5 If the brake assembly does not separate from the
anchor plate it may be helpful to install an M16X2.0
screw longer than 120 mm at the bushing locations
and tap the end of the bolt with a hammer to free
the brake assembly. Remove the assembly.
Axial Mounting Bolt Style
5.3.6 Disconnect the air hose(s) to the brake chamber.
See Figure 42. Supporting the air disc brake by
necessary means, remove the six bolts attaching
the brake to the anchor plate and remove the
caliper/carrier assembly from the vehicle.
Note: Bendix strongly recommends that during re-assembly
these bolts and washers are replaced. See your vehicle
manufacturer for replacement hardware. Remove the
assembly.
Re-installation (Both Styles)
5.3.7 Supporting the air disc brake by necessary means,
attach the brake to the anchor plate using six
(new) bolts. Torque to vehicle manufacturer’s
specifi cations. If torque values and bolts are not
specifi ed by the vehicle manufacturer, then select
a replacement bolt as shown in Table 4.
Anchor Plate/
Torque Plate
Caliper/Carrier
Assembly
(Actuator not
shown)
Mounting Bolts
and Washers
(6 sets total)
FIGURE 42 - AXIAL MOUNT CALIPER/CARRIER
5.3.8 Re-install the air hoses (See Section 5.4.8-9) and
check for leaks.
5.3.9 Inspect and re-install the pads (See Section 5.2).