MOTO GUZZI California EV V1100, Service Station Manual

Page: 157 / 173

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 poor braking efficiency.
CONSIDERING THE DANGER FOR VEHICLE AND RIDER, IT IS STRICTLY NECESSARY, AFTER
REFITTING BRAKES AND RESTORING THE BREAKING SYSTEM TO ITS REGULAR USE CON-
DITIONS, THAT THE HYDRAULIC CIRCUIT BE AIR PURGED.
NOTE
THE VEHICLE MUST BE ON LEVEL GROUND TO BE PURGED.WHILE PURGING THE HYDRAUL-
IC SYSTEM, FILL THE RESERVOIR WITH THE NECESSARY QUANTITY OF BRAKE FLUID.
CHECK THAT, DURING THE OPERATION, THERE IS ALWAYS BRAKE FLUID IN THE RESER-
VOIR.
•
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.
•
Quickly press and release the front
brake lever several times and then
keep it fully pressed.
•
Loosen the bleed valve 1/4 of a turn so
that the brake fluid flows into the con-
tainer. This will release the tension on
the brake lever and will make it reach
the end of stroke.
•
Close the bleed valve before the lever
reaches its end of stroke.
•
Repeat the operation until the fluid
draining into the container is air-bubble
free.
NOTE
WHILE PURGING 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.
•
Screw the bleeding valve and remove the pipe.
•
Top-up the reservoir until the correct brake fluid level is obtained.
California EV V1100
Braking system
BRAK SYS - 157