Remove/install rear axle brake caliper

AR42.10-D-0080B

Remove/install rear axle brake caliper

10.5.12



Removing

 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



Brake fluid notes

All models

AH42.50-P-0001-01A



Notes on repairs to brake system

All models

AH42.00-P-0003-01A



Notes on evaluating brake disks

AH42.10-N-9406-07B

1.1

Mechanically slacken off the spring brake cylinder using the release screw (7)

 With unpressurized compressed-air system.

1.2

Loosen spring actuator brake cylinder via parking brake

 With operational compressed-air system (min. 6.4 to 7 bar).

2.1

Lock brake lever (6) with the 2.5 mm dia. locking pin (5)

 Model 668, 670 up to VIN *096929 version 1 (A): upper locking pin

 When working on the brake the brake lever (6) must not be moved towards the brake caliper, otherwise the adjusting mechanism of the parking brake must be reset: 

Resetting the parking brake's adjustment mechanism to its initial position

AR42.20-D-0560A

2.2

Lock brake lever (6) with the 2.5 mm dia. locking pin (5)

 Model 668, 670 as of VIN *096930 and 905.6 version 2 (B): lateral locking pin.

 When working on the brake the brake lever (6) must not be moved towards the brake caliper, otherwise the adjusting mechanism of the parking brake must be reset: 

Resetting the parking brake's adjustment mechanism to its initial position

AR42.20-D-0560A

3

Unlock and remove pin (2)

4

Remove brake pads

AR42.10-D-1700B

5

Remove brake line (10) from bracket (8)

 Plug cable ends and connection threads.



*129589009100

6

Remove bolts (9)

7

Remove brake caliper (11)



Install

8

Install brake caliper (11)

 The 2.5 mm dia. locking pin (5) or transport locking pin (on a new brake caliper) must not be pulled out.

 Use new bolts (1).

 Model 668, 670

*BA42.10-N-1001-12D

 Model 905.6

*BA42.10-N-1001-12A

9

Screw in screws (9)

10

Screw in brake line (10) at bracket (8)

 Model 668.3, 670.4/ 32/ 33/ 35/ 37

*BA42.10-N-1001-04C

 Model 905.6

*BA42.10-N-1001-04A

11

Adjust parking brake

 Only when replacing the brake caliper.

AR42.20-D-0540D

12

Install and secure bolt (2)

 Before assembling the bolt (2) slowly apply compressed air to the spring actuator until the bores in the clevis and brake lever (6) align.

13

Remove 2.5 mm dia. locking pin (5) or transport locking pin

 Do not move the brake lever towards the wheel, as this results in the automatic adjuster being operated, if necessary: 

Reset adjusting mechanism in the design position

AR42.20-D-0560A

14

Install brake linings

AR42.10-D-1700B

15

Bleed brake system

Model 668, 670 with vacuum-assisted brake system with electrical air compressor (power brake system)

AR42.10-L-0010A

Model 668, 670 with CODE (B16) 2-circuit hydraulic / 2-circuit air brake

AR42.10-L-0010B

Model 905.6

AR42.10-D-0010A

Number

Designation

Model
668, 670

BA42.10-N-1001-12D

Bolt, caliper support to rear axle tube (bolt oiled)

M121.5

Nm

110

M141.5

Nm

-

Number

Designation

Model
905

BA42.10-N-1001-12A

Bolt, brake caliper support to rear axle tube

M121.5

Nm

110

M141.5

Stage 1

Nm

-

Stage 2

°

-

M161.5

Stage 1

Nm

-

Stage 2

°

-

Number

Designation

Model
668, 670

BA42.10-N-1001-04C

Bolted connection of brake line

Nm

16

Number

Designation

Model 905

BA42.10-N-1001-04A

Brake line threaded connection

M101

Nm

14