Remove/check/install front axle brake pads

AR42.10-S-1600A

Remove/check/install front axle brake pads

15.1.10

8.7.09

Safety note added



Remove/install

Danger!

Risk of poisoning caused by swallowing brake fluid. Risk of injury caused by brake fluid coming into contact with skin and eyes.

Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.

AS42.50-Z-0001-01A



Notes on self-locking nuts and bolts

All models

AH00.00-N-0001-01A



Brake fluid notes

All models

AH42.50-P-0001-01A



Notes on repairs to brake system

All models

AH42.00-P-0003-01A



For safety reasons all the brake pads on the axle should be replaced at the same time.

1

Switch vehicle to service mode.

 With code CL0 (air suspension)

2

Unscrew cap on brake fluid reservoir.

3

Remove front wheels.

AR40.10-S-1100A

4

Disconnect brake lining wear indicator sensor (10) at plug connection.

5

Detach retaining clip (3) from brake caliper (1).

6

Unscrew dust cap (6), unscrew guide bolt (5) at brake caliper (1).



*BA42.10-N-1002-03A

7

Remove brake caliper (1) and secure in wheel housing using suitable wire.

 Installation: Do not twist brake hose. Ensure brake hose can move freely. Replace damaged brake hoses.

8

Remove brake pads (4)

9

Reset brake caliper piston

 In order to avoid damaging the dust seal when installing brake pads (4), it is essential to ensure that the dust seal is completely folded in and does not project at any point after resetting the brake caliper piston.

 The brake fluid is guided back to the brake fluid reservoir by resetting the brake caliper piston. Make arrangements to collect any brake fluid which escapes from the reservoir.

 Pusher tool

*000589524300

10

Clean brake parts and check for wear and damage

 Replace parts if undersize. Check dust boot and brake caliper (1) for damage and replace if necessary.

Front axle brake disks

*BE42.10-N-1001-08B

Brake lining wear limit

*BE42.10-N-1001-10A

 Brake caliper brush

*000589266800

 Caliper gauge

*124589051900

11

Install in reverse sequence

12

Build up brake pressure

 Depress brake pedal several times.



Checking

13

Check brake fluid level in reservoir and correct if necessary



AP42.50-D-4210A

14

Check brake system for leaks

Number

Designation

Model
638

BE42.10-N-1001-08B

Brake disk

Thickness when new

mm

22

Wear limit

mm

19

Lateral runout

mm

0.05

Flatness deviation

mm

0.05

Repair limit dimension

mm

-

Number

Designation

Model 638

BE42.10-N-1001-10A

Brake lining wear limit

mm

3

Number

Designation

Model
638

BA42.10-N-1002-03A

Bolt, floating brake caliper to floating brake caliper carrier

ITT

Nm

28

Bosch

Nm

28

Brembo

Nm

-