Front axle brake caliper
Number | Designation | Model | Model | ||
BA42.10-P-1002-10I | Bleed screw to brake caliper | Nm | 7 | 7 | |
Rear axle brake caliper
140 589 03 09 00
Socket wrench
P42.10-0261-06
1 Empty reservoir.
2 Connect filling and bleeding unit.
3 Open bleed screw (b) on master brake cylinder and allow brake fluid to drain out free of bubbles.
4 Allow 50 cm3 of brake fluid to drain out at each brake caliper
(sequence: 1, 2, 3, 4).
5 Start engine.
6 Open bleed screw on brake caliper (1) while simultaneously depressing brake pedal abruptly. Hold down for approx. 3s and then release slowly (repeat procedure 5 times).
Allow approx. 80 cm3 of brake fluid to drain out free of bubbles.
Bleeding pressure 2 bar.
P42.10-0260-01
7 Repeat bleeding procedure at brake calipers 2, 3, 4; see point 6.
Bleed pressure reservoir of hydraulic unit
This operation only needs to be performed if the reservoir has run empty or work has been carried out on the master brake cylinder, on the precharging pump, on the pressure reservoir, on the hydraulic unit and on the connecting lines.
8 Model 140.04/05/06/07: Connect vehicle wiring harness to master brake cylinder switchover valve (Y61).
P42.40-0237-01
9 Switch off ignition.
10 Loosen bleed screw "SP" and empty pressure reservoir.
11 Tighten bleed screw "SP" and start engine.
12 Loosen bleed screw "SP" until clear, bubble-free brake fluid is discharged
(approx. 80 cm3).
13 Tighten bleed screw "SP" and wait for pressure reservoir to be charged (charging pump runs audibly for approx. 30 s).
14 Switch off engine.