Replace brake fluid

AP42.00-P-4280FF

Replace brake fluid

13.4.06

Replace

Danger!

Risk of poisoning caused by swallowing brake fluid. Risk of injury caused by brake fluid coming into contact with skin and eyes.

Pour brake fluid only into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.

AS42.50-Z-0001-01A



Brake fluid notes

AH42.50-P-0001-01A



Notes on repairs to brake system

AH42.00-P-0003-01A

1

Open engine hood

2

Unscrew cap (1) of brake fluid reservoir (2)

3

Connect the brake fluid change unit to the brake fluid reservoir (2) and switch on

 Observe owner's manual of brake fluid replacement unit.

*WE58.40-Z-1001-07A



General brake fluid

Sheet 330.1

BB00.40-P-0330-01A



Brake fluids (DOT 4 plus)

Sheet 331.0

BB00.40-P-0331-00A



*454589019100

Danger!

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

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

AS00.00-Z-0010-01A

4

Raise vehicle

5

Detach dust caps of the brake bleeder valve (5), connect hose of brake fluid receptacle to brake bleeder valve (5) of right rear brake caliper (4) and open brake bleeder valve (5). Then have a second person depress brake pedal several times and close brake bleeder valve (5) again.

 Only close brake bleeder valve (5) when brake fluid is discharged free of bubbles and without contamination (brake fluid has light color).



*BA42.10-P-1002-12A

6

Carry out bleeding process on left rear brake caliper (4), right rear brake caliper (3) and left front brake caliper (3) in the same way

 Observe correct sequence.



*BA42.10-P-1002-10A



*BA42.10-P-1002-12A

7.1

Remove dust cap from bleed valve (7), connect hose of brake fluid receptacle to bleed valve (7) of slave cylinder (6) and open bleed valve (7) and close it again

Only on transmission 717.470/471/473/478

 Only close the brake bleeder valve (7) when brake fluid escapes free of bubbles and without contamination (light color of brake fluid).

8

Press dust caps onto the brake bleeder valves (5) and bleed valve (7)

 Bleeder valve (7) only on transmission 717.470/471/473/478.

9

Lower vehicle

10

Disconnect brake fluid replacement unit

 Observe owner's manual of brake fluid replacement unit.

*WE58.40-Z-1001-07A



*454589019100

11

Check brake fluid level, correct if necessary

AP42.10-P-4210FF

12

Screw on cap (1) of brake fluid reservoir (2)

13

Check leaktightness of brake system

 If a test trip is carried out after a repair to the hydraulic system, the brakes are to be applied with an ABS control.



Check brake system for leaks

AR42.10-P-0100-01FF

Number

Designation

Model
454.0

BA42.10-P-1002-10A

Brake bleeder valve to brake caliper

Nm

10

Number

Designation

Model
454.0
with code 30Y

BA42.10-P-1002-12A

Brake bleeder valve to brake caliper

Nm

6

WE58.40-Z-1001-07A

Brake fluid replacement unit