Bleed clutch operating system

AR25.20-W-0070C

Bleed clutch operating system

29.6.10

10.3.06

Work procedure completely revised.

Bleeding

 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

AH42.50-P-0001-01A

1

Open front flap

2

Connect connection line (1) of bleeder unit to expansion reservoir (2)

Electric brake fluid change/bleeder unit

3

Adjust bleed pressure on bleeder unit to 2 bar

4

Switch on bleeder unit

 Pay attention to manufacturer's operating instructions.

5

Attach bleed hose (4) to bleed valve (3) of central clutch release bearing

6

Open bleeder valve (3)

 Open the bleed valve (3) by at least 90°. Carry out bleeding process until the brake fluid escapes at the bleed hose (4) free of bubbles, in the process operate the clutch pedal several times.

7

Close bleed valve (3) and detach bleed hose (4)



*BA25.20-N-1008-01N

8

Check tightness of breather valve (3)

9

Switch off bleeder unit and detach connection line (1) from expansion reservoir (2)

 The bleeder unit must be unpressurized, lower the pressure in the bleeder unit if necessary.

10

Correct the brake fluid level in expansion reservoir (2)

11

Perform a function test

 If the function of the clutch operating system is inadequate, repeat the bleeding operation.

12

Close front flap

Number

Designation

Model
374.4, 375.1, 958.0, 970, 972, 974, 975, 976 with engine
900.9, 902.9, 904.9, 906.9, 924.9, 925.9, 926.9

Model
374.5, 375.3, 950.5/6, 952.5/6, 953.6, 954.5, 957, 958.2
with engine 902.9, 906.9, 926.9

BA25.20-N-1008-01N

Central clutch release bearing bleed valve

M8

Nm

8

8

M10

Nm

17

17