Wabco ABS/ASR D4 Cab Anti-Lock Braking System Service Manual

The anti-lock braking system on a heavy vehicle keeps the wheels from locking under hard braking, and the ASR side helps hold traction when a wheel starts to spin. When a warning lamp stays on or a wheel speed fault shows up, the truck or carrier is down until someone finds the cause. This service manual is what a fleet mechanic or crane service technician opens when the repair is happening in your own shop and you need the procedure in front of you.

What this manual helps you do

• Trace the layout of the system from the system description before you start pulling parts.
• Diagnose warning lamp behavior and read fault codes against the diagnosis and fault codes section.
• Check wiring and connections between the controller, sensors and valves.
• Replace a failed component by following the component replacement steps in order.
• Verify the repair by running the test steps before the unit goes back on the road.

Who this is for

Rental fleet mechanics, crane service technicians and independent repair shops that handle their own brake work. It also suits a dealer technician or plant maintenance crew looking after a vehicle that came in with no paperwork.

FAQ

Q: What do I receive and how is it organised?

A: You get one PDF file of 49 pages in English, publication number W577-0231E. It is the complete manual, set up as a short component service manual.

Q: Which equipment does it fit?

A: It is written for the Wabco ABS/ASR D4 Cab anti-lock braking system. Check the system on your vehicle against that title wording and you'll know quickly whether it matches.

Q: How does it fit the job I'm doing?

A: A manual like this usually gives you the component descriptions, the wiring and connections information, fault code meanings and the replacement steps in one place. That keeps a brake repair moving instead of waiting on outside help.

If you're working on a D4 Cab system, download it, keep it with the unit's records, and have it open at the bench next time a fault comes in.

Click here to view the preview (PDF)

Table of Contents:

General outline of the sections covered in a service manual of this type. Actual chapter numbering and section names vary by model and edition.

• Foreword and safety information
• General information and specifications
• System description
• Components
• Wiring and connections
• Diagnosis and fault codes
• Component replacement
• Troubleshooting
• Service data

Wabco PDF Manuals

All Crane Manuals