Remove/install brake shoes of parking brake

AR42.20-P-0530TX

Remove/install brake shoes of parking brake

8.12.11

29.11.11

Long-life grease repair materials replaced by hot-grease paste

Operation step 7, 9

 

Remove/install

 Danger!

Risk of injury caused by body parts being jammed or crushed. Risk of injury to skin and eyes caused by brake fluid spraying out at high pressure when working on the SBC brake system

Deactivate SBC brake system using STAR DIAGNOSIS.

AS42.46-Z-0001-01A



Notes on repairs to brake system

AH42.00-P-0003-01A

1

Deactivate SBC brake system using STAR DIAGNOSIS.

Vehicles with Sensotronic Brake Control (SBC)

 The following steps should be run through in STAR DIAGNOSIS:

Select menu item "SBC Sensotronic Brake Control"/"Deactivate 'SBC' system".

Then process all the individual steps from top to bottom.

STAR DIAGNOSIS diagnosis system

2

Remove brake disks (61) at rear wheels

AR42.10-P-0220TX

3

Detach front retracting spring (111) using removal and installation tool (040)



*116589016200

4

Detach rear retracting spring (112) using removal and installation tool (040)



*116589016200

5

Remove upper retaining spring (107) using installation tool (041)

 Compress upper retaining spring (107) and turn through 90° to the left or right.



*112589096100

6

Take off top brake shoe (103)

 If the brake shoes (103) are burnt or brake disk surfaces are damaged, the brake shoes (103), retracting springs (111, 112), retaining springs (107) and brake disks (61) must be replaced.

7

Take off adjusting mechanism (105)

 Installation: Grease the thread of the thrust piece (104) and inner cylinder of the adjusting mechanism (105) lightly . Turn back adjusting mechanism (105) and in this way mount on the lower brake shoe (103) so that positioning wheel (c) is pointing up.

Hot lubricating paste

*BR00.45-Z-1005-06A

8

Remove lower retaining spring (107) using installation tool (041) and remove lower brake shoes (103)

 Compress lower retaining spring (107) and turn through 90° to the left or right.

9

Remove expansion lock (109). To do this, fold open expansion lock (109) and press pin (109a) out of expansion lock (109) and rear brake cable (86)

 Installation: Grease bolt (109a) as well as bearing surfaces and sliding surfaces on the expansion lock (109) lightly.

Hot lubricating paste

*BR00.45-Z-1005-06A



Checking

10

Inspect cap (110).

 Check cap (110) is seated firmly, check for score marks and deformation, replace if necessary.



Notes on installing the cap on the brake stator

AH42.20-P-0530-01T

11

Check rear brake cable (86)

 Check for ease of movement and chafing marks, replace if necessary:



Install new rear brake cable (86).

AR42.20-P-0525TX

12

Install in the reverse order

13

Adjust parking brake

AR42.20-P-0540TX

14

Activate SBC brake system using STAR DIAGNOSIS

Vehicles with Sensotronic Brake Control (SBC)

 The following steps should be run through in STAR DIAGNOSIS:

Select the menu item "SBC-Sensotronic Brake Control"/"Initial startup after repair"/"Remove/install brake shoes".

Then process all the individual steps from top to bottom.

Number

Designation

Order number

BR00.45-Z-1005-06A

Paste, hot lubrication 1 kg, DB supply specification 6879.20

A 000 989 76 51