HAIMA 7 - Page 358

Anti-lock brake system (ABS control unit)
P-28
Function mode:
The brake fluid flows, through the master cylinder and hydraulic pressure unit, into wheel cylinder. Open the
bleed screw on the left front wheel, the bleed screws on other wheel are closed. Repeatedly step on the brake
pedal until the bubbles and impurities have been cleaned out and the brake fluid purified. Repeat the same
procedure on other three wheels.
X- braking look
Vacuum degree: 2bars
Braking look 1
Braking look 2
Backflow 2
Backflow 1
Left rear input
valve
Accumulator
Accumulator
Right front
input valve
Right rear
input valve
Left front
input valve
Right front
output valve
Left rear
output valve
Right rear
output valve
Left front
output valve
X- braking look
Vacuum degree: 2bars
Braking look 1
Braking look 2
Backflow 2
Backflow 1
Left rear input
valve
Accumulator
Accumulator
Right front
input valve
Right rear
input valve
Left front
input valve
Right front
output valve
Left rear
output valve
Right rear
output valve
Left front
output valve