APRILIA 8140172, Service And Repair Manual

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SERVICE AND SETTING UP
2 - 25
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Carefully read 0.2.1 (PRECAUTIONS AND GENERAL
INFORMATIONS) and 1.2.4 (BRAKE FLUID).
Check the brake fluid every 7500 km (4687 mi) or 8
months, change it every two years.
a
CAUTION
If the brake lever features excessive free play, if it is
excessively spongy or in the event of air bubbles in
the circuit, bleed the system, see 2.20 (BLEEDING
THE BRAKING SYSTEMS).
The leak of brake fluid damages painted or plastic
surfaces.
Before setting out, make sure that the hoses are not
twisted or holed and that there are no leakage from
the connectors.
Do not use or mix different types of silicone or oil-
based liquids.
Do not use brake fluids taken from old containers, or
not sealed.
Make sure that neither water nor dust accidentally en-
ter the circuit.
CHECKING
NOTE
Position the vehicle on the side stand on firm
and level ground.
◆ Keep the vehicle in vertical position, so that the fluid
contained in the tank (1) is parallel to the plug (2).
◆ Make sure that the brake fluid contained in the reservoir
exceeds the “MIN” mark, by checking through the ap-
propriate slot on the right fairing.
MIN = minimum level.
MAX= maximum level.
◆ If the fluid does not reach at least the “MIN” mark, pro-
vide for topping up.
TOPPING UP
◆ Remove the right fairing, see 7.1.26 (REMOVING THE
SIDE FAIRINGS).
a
CAUTION
The brake fluid may flow out of the tank.
Do not operate the rear brake lever if the brake fluid
tank plug is loose or has been removed.
◆ Unscrew the screw (3) completely.
◆ Slightly move the whole reservoir (1) outwards.
a
WARNING
Avoid any prolonged exposure of the brake fluid to
the air.
The brake fluid is hygroscopic and when in contact
with the air it absorbs its humidity.
Leave the brake fluid tank open ONLY for the time
necessary for topping up.
◆ Unscrew and remove the plug (2).
NOTE
In order not to spill the brake fluid while topping
up, keep the fluid in the tank parallel to the tank rim (in
horizontal position).
◆ Remove the gasket (4).
a
CAUTION
Do not put additives or other subtances into the fluid.
If you use a funnel or other similar items, make sure
that they are perfectly clean.
MAX MAX
MIN MIN
MAX
MIN
4
3
2
1
◆
Top up the reservoir (1) by adding brake fluid, see 1.6
(LUBRICANT CHART), until reaching the correct level
included between the “MIN” and “MAX” marks.
a
CAUTION
It is advisable to top up until reaching the “MAX” lev-
el only with new pads.
When the disc pads wear out, the level of the fluid de-
creases progressively to compensate for their wear.
◆ To reassemble the components, follow the reverse or-
der.