Remove/install front axle axle modulator

AR42.25-W-3000HA

Remove/install front axle axle modulator

14.05.2019

Model

963, 964

with code Z1H (Electronic Brake Control (EBS) from Wabco)

1

Bracket

2

Electrical connectors

3

Bolts

A20

Front axle axle modulator

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Notes on checking axle modulator before replacement

AH42.25-W-0001-01H

 

Remove/install

1

Secure vehicle to prevent it moving away.

2

Drain compressed air system completely.

3

Switch off ignition.

4

Remove electrical connectors (2) from front axle modulator (A20).

5

Mark all compressed air connectors as per labeling on front axle modulator (A20) and remove.

AR42.10-W-0900H

 Installation: Attach all compressed air connectors according to marking.

6

Remove screws (3) and remove front axle modulator (A20).

 Bolt, axle modulator on front axle (Wabco) to bracket

*BA42.25-N-1008-01B

7

Install in the reverse order.



Check

8

Start the engine and completely fill compressed-air system.

9

Switch off engine.

10

Operate brake pedal and fix in place using brake pedal jack.

 Brake pedal jack

*000589183100

11

Check compressed air connectors at front axle modulator (A20) for leak tightness.

Leak detection spray

*BR00.45-Z-1002-03A

12

Remove brake pedal jack.

 Electropneumatic brake (EPB)

Number

Designation

Model 963, 964

BA42.25-N-1008-01B

Bolt, axle modulator on front axle (Wabco) to bracket

Nm

92

Repair materials

Number

Designation

Order number

BR00.45-Z-1002-03A

Leak detection spray

Christof Fischer GmbH
www.kaeltefischer.de