Remove/install rear-axle brake caliper

AR42.10-P-0080AA

Remove/install rear-axle brake caliper

31.01.2018

Model

461

with disk brakes on the rear axle

Model

463 (except 463.234/270/271)

up to model year 2013

except code 979 (Special protection MB Guard)

with disk brakes on the rear axle

1

Brake hose

2

Brake caliper

3

Microencapsulated guide pins

4

Brake piston

5

Dust cap

6

Caliper support

 Caution

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

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

Topical note

Brake fluid notes

AH42.50-P-0001-01A

Topical note

Notes on repairs to brake system

AH42.00-P-0003-01A

 

Remove/install

1

Detach complete wheel



AP40.10-P-4050G

2

Remove brake hose (1) from brake caliper (2)

 Brake hose to rear axle floating caliper

*BA42.10-P-1005-04B

 Torque wrench

*001589722100

 Box wrench bit

*000589750300

3

Seal exposed connections with plugs

 To prevent the brake fluid reservoir from emptying.

 Record plug

*129589009100

4

Detach brake caliper (2) from brake caliper support (6)

 Installation: Replace microencapsulated guide pins (3).

 Bolt, pilot bushing/guide pin to brake caliper support

*BA42.10-P-1002-17B

5

Remove contact sensor from brake wear indicator

If installed.

 Self-locking bolt, brake wear contact sensor to floating caliper

*BA42.10-P-1004-17B

6

Push back brake piston (4) with pusher tool and collect brake fluid in a suitable container

 Resetting device

*000589524300

7

Clean brake caliper (2)

 Brake caliper brush

*000589266800



Check

8

Check brake caliper (2) for brake fluid escaping from the brake piston (4)

If there are problems



Replace brake caliper (2)

9

Check dust cap (5) for damage

If there are problems



Replace dust cap (5)

10

Install in the reverse order

11

Bleed brake system

AR42.10-P-0010GG

 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

12

Press brake pedal several times and check brake system for leak tightness

AR42.10-P-0100-01A

 Firm resistance should be noticeable at the brake pedal.

13

Check fluid level in the brake fluid reservoir, correct if necessary



AP42.50-P-4210G

 Rear axle floating caliper

Number

Designation

Model 461
Model 463 (except 463.270/271/272/273)
up to model year 2019

Model 463.270/271/272/273
up to model year 2019

BA42.10-P-1002-17B

Bolt, pilot bushing/guide pin to brake caliper support

Nm

30

28

 Rear axle floating caliper

Number

Designation

Model 463
as of model year 2019

BA42.10-P-1002-17B

Bolt, pilot bushing/guide pin to brake caliper support

Nm

35

 Rear axle floating caliper

Number

Designation

Model 461
Model 463 (except 463.270/271/272/273)
up to model year 2019

Model 463.270/271/272/273
up to model year 2019

BA42.10-P-1004-17B

Self-locking bolt, brake wear contact sensor to floating caliper

Nm

30

8

 Rear axle floating caliper

Number

Designation

Model 463
as of model year 2019

BA42.10-P-1004-17B

Self-locking bolt, brake wear contact sensor to floating caliper

Nm

8

 Brake lines, brake hoses

Number

Designation

Model 461

Model 463 (except 463.236/248/270/271/272/273) up to model year 2019,
model 463.236/248 except code 979 up to model year 2019

BA42.10-P-1005-04B

Brake hose to rear axle floating caliper

Nm

18

18

 Brake lines, brake hoses

Number

Designation

Model 463.272/273
up to model year 2019

Model 463
as of model year 2019

BA42.10-P-1005-04B

Brake hose to rear axle floating caliper

Nm

24

-