APRILIA ETV mille Workshop Manual page 70

PERIODIC MAINTENANCE AND ADJUSTMENTS
ETV mille
2.18 BLEEDING THE BRAKE CIRCUITS
Read 0.5.1 (GENERAL PRECAUTIONS AND
INFORMATION) and 1.2.4 (BRAKE FLUID). 1
See 2.1.1 (PERIODIC MAINTENANCE CHART) for
service intervals.
Any air trapped in the hydraulic circuit will act as a
cushion and take up most of the pressure applied by the
master cylinder. This will hamper the operation of the
brake calipers and reduce braking efficiency.
A spongy feel of the brake lever and loss of braking mean
that there is air in the circuit.
CAUTION
This is a dangerous condition that makes the vehicle
unsafe to ride. Each time the brakes are removed, it
is indispensable to bleed the hydraulic circuit once
the brakes have been refitted and the braking system
is back to normal operating conditions.
1
Brake fluid is an irritant. Avoid contact with eyes or
skin.
In the event of accidental contact, wash the affected
area thoroughly. In the event of contact with eyes,
contact an eye specialist or seek medical advice.
DO NOT RELEASE BRAKE FLUID INTO THE
ENVIRONMENT.
KEEP AWAY FROM CHILDREN.
WARNING
Handle with care: contact with brake fluid will alter
the chemical properties of paintwork, plastic and
rubber parts, etc.
2
Wear latex gloves during servicing.
Do not spill brake fluid on plastic or paint-finished
parts or they will damage.
NOTE
This motorcycle is fitted with two (front and rear)
braking systems operated by two independent hydraulic
circuits.
The front twin-disc brake is fitted with one disc on either
side of the wheel.
The rear single-disc brake is fitted with one disc on the
right-hand side of the wheel.
FRONT BRAKING SYSTEM
The front braking system is fitted with two bleed nipples
(1), one for each of the front brake calipers.
Repeat the BLEEDING PROCESS for each bleed nipple
(1).
REAR BRAKING SYSTEM
The rear braking system is fitted with one bleed nipple (2)
located on the rear brake caliper.
2
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Release 00/2004 - 04