Disassembling brake caliper

AR42.10-G-0575-01BB

Disassembling brake caliper

 Warning

Risk of injury. Moving parts can pinch, crush or, in extreme cases even sever extremities.

No parts of the body or limbs should be within the operating area of mechanical components when moving components.

AS00.00-Z-0009-01A

Model

405.102/103/122/123/200/201/220/221

Model

405.105/110/125/202/222 ## up to 260530

Model

437.431/436 ## up to 262508 with rear axle 747.222 with front axle 737.222

Model

437.437 ## up to 263379 with rear axle 747.223 with front axle 737.223

Model

437.46 with rear axle 747.224 with front axle 737.224

Modification notes

03.02.2020

Work procedure completely revised.

1

Remove screw (2) and remove with spring (3).

2

Remove plate (4).

3

Remove dust boot (5) with suitable screwdriver.

 Do not damage seat of dust boot (5) in brake caliper (1).

4

Remove axial shaft sealing ring (6) from brake caliper (1) using a suitable screwdriver.

5

Remove sheet metal cover (7) with suitable screwdriver.

6

Remove radial shaft sealing ring (8).

 Do not damage seat of radial shaft sealing ring (8) in brake caliper (1).

7

Remove retaining ring (9).

 When doing so, push up brake adjuster against retaining ring (9).

8

Remove spacer disk (10).

9

Remove screw plug (11).

10

Remove spring (12).

11

Remove locking bolt (13).

If the locking bolt (13) cannot be pulled out,



screw an M5 screw into the locking bolt (13) and remove locking bolt (13) with the M5 screw.

12

Remove brake adjuster (14).

13

Remove pressure disk (14.1).

 When removing the brake adjuster (14), the pressure disk (14.1) get stuck in the brake caliper (1).
The pressure disk (14.1) must also be removed.

14

Check outer surface of brake adjuster (14) and bore in brake caliper (1) for brake adjuster (14) for corrosion and wear.

If problems occur,



replace brake caliper (1).

15

Remove both cover plates (15) using a flat chisel and a hammer.

 Do not damage the seats in the brake caliper (1).

16

Clamp brake carrier (16) in a vise.

 Use soft vise jaws.

17

Secure brake caliper (1) against falling down.

18

Unscrew screws (17) and remove brake caliper (1) from brake carrier (16).

19

Clean contact areas on brake carrier (16) with spirit.

20

Mark installation location of guide pins (18, 19) on brake caliper (1).

21

Remove guide pins (18, 19).

22

Remove both dust boots (20).

23

Clean contact areas on guide pins (18, 19) with spirit.

24

Mark installation location of slide bushing (22) on brake caliper (1).

25

Press slide bushings (21.1, 21.2, 22) out of brake caliper (1) using   press-out drift (A, B).

 Two slide bushings (21.1, 21.2) are installed in the bore of the long guide pin (18) and one slide bushing (22) is installed in the bore of the short guide pin (19).

26

Clean all parts and, in particular, the bores (C, D) and the radial grooves for the dust boots (20) in the brake caliper (1) with spirit.

27

Check all parts for signs of damage and wear.

If problems occur,



replace brake caliper (1) or affected parts.