Bleeding The Braking System - MOTO GUZZI V7 E5 Special-Stone Service Station Manual

Braking system

Bleeding the braking system

Front
Any air trapped in the hydraulic circuit acts as a cushion, absorbing much of the pressure applied by
the brake pump and minimising the braking power of the calliper.
The presence of air is signalled by the "sponginess" of the brake control and by poor braking efficiency.
CAUTION
IN VIEW OF THE DANGER THIS POSES FOR VEHICLE AND RIDER, THE HYDRAULIC CIRCUIT
MUST BE BLED AFTER REFITTING THE BRAKES AND RESTORING THE BRAKING SYSTEM TO
ITS NORMAL OPERATING CONDITIONS.
NOTE
THE VEHICLE MUST BE ON LEVEL GROUND TO BE BLED. WHILE BLEEDING THE HYDRAULIC
SYSTEM, FILL THE RESERVOIR WITH THE NECESSARY QUANTITY OF BRAKE FLUID. CHECK
THAT, DURING THE OPERATION, THERE IS ALWAYS BRAKE FLUID IN THE RESERVOIR.
The bleeding procedure can be performed in a traditional way or using specific tools such as vacuum
pumps or similar.
In the following is shown the "traditional" bleeding procedure.
•
Remove the rubber protection cover
from the bleed valve.
•
Insert the transparent plastic pipe in
the front brake calliper bleed valve and
slide the other end of this pipe in a con-
tainer to collect the fluid.
•
Remove the front brake fluid reservoir
cap.
•
Operate the brake lever and then open
the bleed valve on the calliper 1/4 of a
turn to let the air out.
•
Close the bleed again before reaching
the lever end of the stroke and repeat
the operation until there is no air.
•
Repeat the procedure for both callip-
ers.
BRAK SYS - 276
V7 E5 Special-Stone