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TECHNICAL BULLETIN TP-2307
Meritor EX+
Series Air Disc Brake
TM
REPLACING BENDIX AND WABCO AIR DISC BRAKES ON TRUCKS
AND TRAILERS WITH MERITOR EX+
Hazard Alert Messages
Read and observe all hazard alert messages in this publication.
DANGER
Indicates imminent danger. Failure to follow this instruction will
result in death or serious injury.
WARNING
Indicates a possibly impending danger. Failure to follow this
instruction can result in death or serious injury.
CAUTION
Indicates a hazardous situation or unsafe practice which, if not
avoided, could result in injury or damage to components.
How to Obtain Additional Maintenance,
Service and Product Information
Refer to
Maintenance Manual MM-0467 EX+
To obtain this and additional publications, visit Literature on Demand
at meritor.com.
How to Obtain Parts, Tools and Supplies
Specified in this Manual
Contact Meritor's Commercial Vehicle Aftermarket 888-725-9355.
For additional assistance with parts, contact the Meritor Parts
Center in Florence, KY at
CustCareCntr.Florence@Meritor.com
859-525-3500.
(16579)
Printed in USA
EX+
Procedures
This publication provides procedures for removing an existing air
disc brake and replacing it with a Meritor EX+
Safety Precautions
Before performing the procedures in this publication, read and
understand the following safety precautions.
TM
Air Disc
Brake.
or
Copyright Meritor, Inc., 2023
L BRAKES
TM
L Model Air Disc Brake Retrofit
TM
DANGER
ASBESTOS AND NON-ASBESTOS FIBERS - Some brake linings
contain asbestos fibers, a cancer and lung disease hazard. Some
brake linings contain non-asbestos fibers, whose long-term
effects to health are unknown. Use caution when handling both
asbestos and non-asbestos materials.
DANGER
Park the vehicle on a level surface. Block the wheels to prevent
the vehicle from moving. Support the vehicle with safety stands.
NEVER work under a vehicle supported only by jacks. Jacks can
slip and fall over. Failure to use safety stands can result in death
or serious personal injury and damage to components.
WARNING
To prevent eye injury, always wear eye protection when performing
vehicle maintenance or service.
L brake.
TM
TP-2307 / Issued 06-23
Page 1
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Summary of Contents for Meritor EX+ L
- Page 1 Read and observe all hazard alert messages in this publication. This publication provides procedures for removing an existing air DANGER disc brake and replacing it with a Meritor EX+ L brake. Indicates imminent danger. Failure to follow this instruction will Safety Precautions result in death or serious injury.
- Page 2 Before beginning, verify the part number is correct for the brake being replaced. Note the brake may be in a different position on the vehicle than noted in the Meritor part description. In most cases, a left-hand caliper will be used on the driver side of the vehicle. Always replace a left-hand caliper with a left-hand caliper and right-hand caliper with a right-hand caliper.
- Page 3 To do so, remove the adjuster cap/plug and turn the adjuster COUNTERCLOCKWISE until there is enough clearance to easily remove the pads. Figure 2 and Figure 3. (16579) TP-2307 / Issued 06-23 Printed in USA Copyright Meritor, Inc., 2023 Page 3...
- Page 4 NOTE: The caliper is not always Streetside mounted in the configuration (RR) (LR) shown due to clearance issues. Always default to the vehicle manufacturer’s mounting orientation. 4021524b Figure 6 TP-2307 / Issued 06-23 (16579) Page 4 Copyright Meritor, Inc., 2023 Printed in USA...
- Page 5 BRAKE CHAMBER 4021527a Figure 9 NOTE: If the bolts are hard to reach, Meritor has a special 7-inch 4019534a extension adapter socket (30 mm) (3256-B-1354) that can be Figure 7 used to remove M20-size bolts. If the fasteners are a different size, consult the vehicle manufacturer for the appropriate adapter.
- Page 6 M20-size fasteners. boot is damaged, replace the brake chamber per the Refer to MM-0467 for correct tightening instructions and manufacturer’s recommendations. Figure 16. torque specifications. TP-2307 / Issued 06-23 (16579) Page 6 Copyright Meritor, Inc., 2023 Printed in USA...
- Page 7 133-155 lb-ft (180-210 Nm). Figure 18 and Figure 19. Figure 20 15. Remove fastener and pad retainer bar from the caliper with a 17 mm socket. Reuse the bolt. (16579) TP-2307 / Issued 06-23 Printed in USA Copyright Meritor, Inc., 2023 Page 7...
- Page 8 CLOCKWISE until the pads contact the rotor. c. To set the correct brake adjustment clearance, de-adjust the brake by rotating the adjuster stem 1/2 turn COUNTERCLOCKWISE. Figure 26. TP-2307 / Issued 06-23 (16579) Page 8 Copyright Meritor, Inc., 2023 Printed in USA...
- Page 9 NOTE: The Meritor adjuster will not make a clicking noise Road Test the Brakes while turning in either direction. It is not defective. Initial Brake Check. Prior to leaving the facility parking lot, test the brakes at low speed with 3-5 brake applications. These...
- Page 10 Information contained in this publication was in effect at the time the publication was approved for printing and is subject to change without notice or liability. 2135 West Maple Road Meritor Heavy Vehicle Systems, LLC, reserves the right to revise the information presented or to discontinue the production of parts described at any time. Troy, MI 48084 USA...
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