WABCO 400 850 913 0 Service manual

WABCO HABS-E KIT WITH ECU
AND BRACKET:
P/N: 400 850 913 0, P/N: 400 850 914 0
TECHNICAL BULLETIN

3
Table of Contents
Edition 1 (05/2019)
Document no.: TP1116
This publication is not subject to an updating
service.
Table of Contents
1 General Information ......................................................................................................................................... 4
2 Safety Information............................................................................................................................................ 6
3 Introduction ..................................................................................................................................................... 7
4 Installation ........................................................................................................................................................ 7

4
General Information
1 General Information
Symbols used in this document
DANGER
Description of an immediate situation which will result in irreversible injury or death if the warning is
ignored.
WARNING
Description of a possible situation which may result in irreversible injury or death if the warning is
ignored.
CAUTION
Description of a possible situation which may result in irreversible injury if the warning is ignored.
NOTICE
Description of a possible situation which may result in material damage if the warning is ignored.
Important information, notes and/or tips
Reference to information on the internet
1. Action step
- Action step
Consequence of an action
List
•List
Note on the use of a tool/WABCO tool
How to Obtain Additional Maintenance, Service and Product Information
Refer to WABCO Maintenance Manual MM-0677, Hydraulic Anti-Lock Braking Systems (HABS) for
Medium-Duty Trucks, Buses and Motor Home Chassis for E Version Hydraulic ABS. Call WABCO North
America Customer Care at 855-228-3203 to obtain this publication. WABCO publications are also available
on our website:www.wabco-na.com

5
General Information
WABCO Academy
https://www.wabco-academy.com/home/
WABCO Online product catalog
http://inform.wabco-auto.com/
Your direct contact to WABCO
WABCO North America
1220 Pacific Drive
Auburn Hills, MI 48326
Customer Care Center: [phone]
www.wabco-na.com

6
Safety Information
2 Safety Information
Read and observe all Warning and Caution hazard alert messages in this publication. They provide
information that can help prevent serious personal injury, damage to components, or both.
WARNING
To prevent serious eye injury, always wear safe eye protection when you perform vehicle
maintenance or service.
WARNING
Park the vehicle on a level surface. Block the wheels to prevent the vehicle from moving. Support the
vehicle with safety stands. Do not work under a vehicle supported only by jacks. Jacks can slip and
fall over. Serious personal injury and damage to components can result.
WARNING
Release all air from the air systems before you remove any components. Pressurized air can cause
serious personal injury.
CAUTION
The hydraulic ABS E version modulator is a complex device that provides optimum efficiency and
operation. If the system sustains damage, or a component malfunctions and requires replacement,
the replacement procedures provided by WABCO must be followed exactly with the associated steps
performed in the order presented. Not following these steps could lead to the HABS not operating
correctly.
CAUTION
Hydraulic brake fluid is a caustic substance. Contact with the hydraulic brake fluid can cause skin
irritation. Do not let hydraulic brake fluid touch any painted surfaces, as it will remove the paint.
Hydraulic brake fluid may also damage certain non-metal surfaces. Do not let fluid contact brake
pads, shoes, rotors or discs.

7
Installation
3 Introduction
WABCO Kits 400 850 913 0 and 400 850 914 0 contain:
Hydraulic ABS (HABS) Modulator with ECU and angled mounting bracket (7 degree). Figure 1.
Fig. 1
NEW ANGLED
MOUNTING BRACKET
ECU/MODULATOR
ASSEMBLY
4008665c
The following installation procedures describe the process of installing the hydraulic ABS unit on the
vehicle. Refer to Maintenance Manual MM-0677 for more detailed installation procedures.
Failure to install the unit correctly will void the product warranty.
4 Installation
1. Wear safe eye protection.
2. Remove the old hydraulic ABS ECU/modulator assembly and the bracket from the vehicle.
Figure 2 shows the HABS-E installation on Bluebird vehicles built from 2007 to 2010.
Fig. 2
4008853a

8
Installation
3. Install the new ECU/modulator assembly and bracket provided in the kit onto the vehicle. Figure 3
shows the installation of the new kit on the vehicle. Use the existing mounting hardware. Tighten the
four mounting screws to OEM torque specification. Figure 1 and Figure 4 show the replacement part.
Please observe the mounting holes on the bracket flange are clocked at 7 degrees.
The new ECU/modulator assembly and bracket are designed with a 7-degree horizontal tilt
when installed into the vehicle. The motor axis must make an angle of between 5 and 30
degrees with the vehicle’s horizontal plane, and the back of the motor must point upward.
Figure 4 shows the required installation orientation of the repair unit relative to the horizontal
plane of the vehicle.
Fig. 3
4008853b
Fig. 4
TILTED 7° RELATIVE
TO VEHICLE FRAME
7°
4008666b
4. Remove and scrap the plastic plugs from the hydraulic ports of the new ECU/modulator assembly.
Figure 5.
Fig. 5
4008664b
PLASTIC
PLUGS

9
Installation
5. Reconnect the brake lines and tighten fittings to OEM specification. Consult with the OEM on what
brake lines have to be used to reconnect the brake lines to the newly installed ABS modulator.
Figure 6.
The modulator is now installed in a different position and if the brake lines that are currently
on the vehicle are:
Flexible hose type — they may be able to be reused.
Preformed steel tubing — they will no longer match (fit) and may need to be replaced.
Fig. 6
4008667a
Refer to Maintenance Manual MM-0677 for additional installation procedures.

© 2019 WABCO North America – All rights reserved – TP1116 / 05.2019
About WABCO
WABCO (NYSE: WBC) is the leading global supplier of braking control systems and other advanced
technologies that improve the safety, efficiency and connectivity of commercial vehicles. Originating
from the Westinghouse Air Brake Company founded nearly 150 years ago, WABCO is powerfully
“Mobilizing Vehicle Intelligence” to support the increasingly autonomous, connected and electric future
of the commercial vehicle industry. WABCO continues to pioneer innovations to address key tech-
nology milestones in autonomous mobility and apply its extensive expertise to integrate the complex
control and fail-safe systems required to efficiently and safely govern vehicle dynamics at every
stage of a vehicle’s journey – on the highway, in the city and at the depot. Today, leading truck, bus
and trailer brands worldwide rely on WABCO’s differentiating technologies. Powered by its vision for
accident-free driving and greener transportation solutions, WABCO is also at the forefront of advanced
fleet management systems and digital services that contribute to commercial fleet efficiency. In 2018,
WABCO reported sales of over $3.8 billion and has more than 16,000 employees in 40 countries. For
more information, visit www.wabco-na.com.