Remove/check/install rear axle brake pads

AR42.10-S-1710E

Remove/check/install rear axle brake pads

20.01.2016

Model

447, 448

Modification notes

15.12.2015

Method extended

Operation step 11

1

Screw

2

Brake caliper

3

Caliper support

4

Brake pad

 Danger !

Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid

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

 Danger !

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 Danger !

Risk of accident when commissioning the vehicle due to a lack of braking effect when the service brake is operated for the first time after repair work.

Before starting the engine, actuate brake pedal several times until pressure is built up and maintained in the brake system.

AS42.50-Z-0002-01A



Notes on self-locking nuts and bolts

AH00.00-N-0001-01A



Notes on repairs to brake system

AH42.00-P-0003-01A



Brake fluid notes

AH42.50-P-0001-01A

 

Remove/install

1

Unscrew cap of brake fluid reservoir

 Installation: Only correct the brake fluid fill level after actuating the brake pedal several times. The brake linings (4) must make contact with the brake disks. Firm resistance should be noticeable at the brake pedal.

2

Remove rear road wheels

AR40.10-S-1100E

3

Remove screws/bolts (1) on brake caliper (2)

 Installation: Replace bolts (1).

 Bolt, floating caliper to floating caliper carrier

*BA42.10-N-1002-12J

4

Remove brake linings (4) from brake caliper support (3)



Check

5

Check brake linings (4) and brake disks for wear and damage



Notes on evaluating brake disks

AH42.10-N-9406-07B

Depending on findings



Replace brake linings (4) or brake disks.

Remove/install rear axle brake disk

AR42.10-S-0240E

6

Check brake hoses for wear and damage

Depending on findings



Replace relevant brake hose.

Remove/install brake hoses at rear axle

AR42.10-S-0025E

7

Press back piston of brake caliper (2)


The dust boot may not protrude here.
The dust boot can otherwise be damaged.

 Resetting device

*000589524300

If piston is sluggish or dust boot damaged.



Replace relevant brake caliper (2).

Remove/install rear axle brake caliper

AR42.10-S-0080E

8

Remove side plates of brake linings (4) from brake caliper support (3)

 Installation: The slide plates only have to be replaced if they exhibit damage.



Clean

9

Clean contact surfaces of brake linings (4) at brake caliper support (3) and at brake caliper (2)

 Brake caliper brush

*000589266800

10

Install in the reverse order



Check

11

Carry out brake test on the test stand



AP42.00-S-4290E

 Rear axle brake caliper

Number

Designation

Model 447, 448

BA42.10-N-1002-12J

Bolt, floating caliper to floating caliper carrier

Nm

34