­­­Technical Bulletin
Bulletin No: TCH-023-002
Subject:

Effective Date: 01/31/2017

Cancels: N/A

Page: 1 of 2

Installation of Bendix® ADB22X® Air Disc Brakes – Best Practices

This bulletin is to inform technicians installing Bendix ADB22X Air Disc Brakes that when mounting a
caliper/carrier assembly, Bendix recommends the fasteners, washers, torque and torque sequences
shown below.
Vertical Mount

Fastener & Torque

Service Actuators Shown

Fastener: M16 x 2.0 x 110 mm,
Class 10.9. Use the manufacturer’s
recommendations, but if unavailable, use
a plain and oil-finish fastener. Bendix
strongly recommends using new
fasteners each time.

Left-hand Brake

Right-hand Brake

Washer: None used.

Short (floating) Pin
Sheer
Sleeve

Torque: Using the torque pattern below,
pre-torque to between 40-50 ft-lbf [54-68
N·m], with a final torque 180-200 ft-lbf
[244-271 N·m]

Sheer
Sleeve

Shelf

Washers are not used
on vertical-mounted ADB22X assemblies
Left-Hand Brake Torque Pattern (Viewed from Below)

Right-Hand Brake Torque Pattern (Viewed from Below)

Brake’s short (floating Pin) is this side

ƒ
‚

Brake’s short (floating pin) is this side

†

(view from below)

Sheer sleeve above, in this location

†
„

Shelf above, in this location

„
Shelf above, in this location

Axial Mount
Caliper/Carrier
Assembly (showing
service actuator )

(view from below)

ƒ
‚

Sheer sleeve above, in this location

Fastener & Torque
Fastener: M20 x 2.5 x 60 mm Class 10.9. Use the manufacturer’s
recommendations, but if unavailable, use a phosphate and oil-finish
fastener. Bendix strongly recommends using new fasteners each time.
Six (6)
Mounting Bolts
and Washers
are Required

Washer: Requires a HARDENED 3 mm (minimum thickness) washer
for each bolt. If the vehicle is using a Bendix manufactured axial anchor
plate, with a thickness of 1.14 in. (29 mm) at the point where these bolts
are inserted, then a bolt with an overall length of 2.36 in. (60 mm) will
meet the requirements. CAUTION: The washer outside diameter must
be less than 1.5 in (37.5 mm).
Torque: Pre-torque to 20-60 ft-lbf [27-81 N·m], with a final torque of
350-400 ft-lbf [475-542 N·m]
Torque Pattern

Anchor Plate/
Torque Plate

Any cross-pattern, see the example below:


ƒ

†„
‚

Bulletin No: TCH-023-002

Effective Date: 01/31/2017

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
guidelines should be observed AT ALL TIMES:
▲Park the vehicle on a level surface, apply the parking
brakes and always block the wheels. Always wear personal
protection equipment.
▲Stop the engine and remove the 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.
▲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.
▲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 a Bendix® AD-IS® air dryer system, a Bendix®
DRM™ dryer reservoir module, or a Bendix ® AD-9si ® air
dryer, be sure to drain the purge reservoir.
▲Following the vehicle manufacturer’s recommended
procedures, deactivate the electrical system in a manner
that safely removes all electrical power from the vehicle.
▲Never exceed manufacturer’s recommended pressures.
▲Never connect or disconnect a hose or line containing
pressure; it may whip and/or cause hazardous airborne
dust and dirt particles. Wear eye protection. Slowly open
connections with care, and verify that no pressure is
present. Never remove a component or plug unless you are
certain all system pressure has been depleted.
▲Use only genuine Bendix ® brand replacement parts,
components and kits. Replacement hardware, tubing, hose,
fittings, wiring, etc. must be of equivalent size, type and
strength as original equipment and be designed specifically
for such applications and systems.
▲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.
▲Prior to returning the vehicle to service, make certain all
components and systems are restored to their proper
operating condition.
▲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.
▲The power MUST be temporarily disconnected from the
radar sensor whenever any tests USING A DYNAMOMETER
are conducted on a vehicle equipped with a Bendix ®
Wingman ® system.
▲You should consult the vehicle manufacturer's operating
and service manuals, and any related literature, in
conjunction with the Guidelines above.
© 2017 Bendix Spicer Foundation Brake LLC • All Rights Reserved

Cancels: N/A

Page: 2 of 2

WARNING: Not all wheels and valve stems are
compatible with Bendix® Air Disc Brakes. Use only
wheels and valve stems approved by the vehicle
manufacturer to avoid the risk of valve stem shear
and other compatibility issues.
WARNING: AVOID CREATING
DUST. POSSIBLE CANCER AND LUNG
DISEASE HAZARD.
While Bendix Spicer Foundation Brake LLC does
not offer asbestos brake linings, the long-term
affects of some non-asbestos fibers have not been
determined. Current Occupational Safety and Health
Administration (OSHA) Regulations cover exposure
levels to some components of non-asbestos linings,
but not all. The following precautions must be used
when handling these materials.
▲ Avoid creating dust. Compressed air or dry
brushing must never be used for cleaning brake
assemblies or the work area.
▲ Bendix recommends that workers doing brake
work must take steps to minimize exposure
to airborne brake lining particles. Proper
procedures to reduce exposure include working
in a well-ventilated area, segregation of areas
where brake work is done, use of local filtered
ventilation systems or use of enclosed cells with
filtered vacuums. Respirators approved by the
Mine Safety and Health Administration (MSHA)
or National Institute for Occupational Safety
and Health (NIOSH) should be worn at all times
during brake servicing.
▲ Workers must wash before eating, drinking or
smoking; shower after working, and should not
wear work clothes home. Work clothes should
be vacuumed and laundered separately without
shaking.
▲ OSHA Regulations regarding testing, disposal
of waste and methods of reducing exposure
for asbestos are set forth in 29 Code of Federal
Regulations §1910.001. These Regulations
provide valuable information which can be
utilized to reduce exposure to airborne particles.
▲ Material Safety Data Sheets on this product, as
required by OSHA, are available from Bendix.
Contact the Bendix Tech Team at 1-800-247-2725,
option 2, or techteam@bendix.com.