Brake System - PIAGGIO MSS APE 50 2012 Service Manual

Braking system

Brake system

Fill the brake liquid tank.
Press the brake pedal up to the end of the stroke
and release it quickly several times until the pedal
feels a back pressure.
CAUTION
THIS PROCEDURE SHOULD BE CARRIED OUT WITH TWO
PEOPLE.
Recommended products
AGIP BRAKE 4 Synthetic brake fluid.
- SAE J 1703
- FMVSS 116 - DOT 3/4
- ISO 4925
- CUNA NC 956 DOT 4
While holding down the pedal, undo the bleed
screw on one of the two rear wheels in order to
squeeze out the air.
CAUTION
PLACE A SMALL PIPE ON THE BLEED SCREW AND AN
APPROPRIATE CONTAINER FOR THE COLLECTION OF
BRAKE FLUID.
Repeat the operations until the air bubbles leak-
age has ceased.
Retighten the bleed screw.
Repeat the operations for the other wheel.
CAUTION
IT MAY OCCUR THAT DURING THE BLEEDING OPERA-
TION, AIR CONTINUES TO ESCAPE FROM THE TUBES; IN
SUCH A CASE INSPECT ALL FITTINGS AND THE COR-
RECT TIGHTENING OF THE PUMP AND OF THE CYLIN-
DERS OF THE WHEEL.
CAUTION
WHILE FILLING THE CIRCUIT MAKE SURE THAT THE LEV-
EL OF THE FLUID LIQUID IN THE RESERVOIR DOES NOT
DROP BELOW THE MINIMUM, CONTINUOUSLY TOPPING
UP WITH THE RECOMMENDED PRODUCT.
CAUTION
BRAKE FLUID IS HYGROSCOPIC; IT TENDS TO ABSORB
MOISTURE FROM THE SURROUNDING AIR.
IF THE HUMIDITY IN THE BRAKE FLUID IS ABOVE A GIV-
EN VALUE, BRAKING IS POOR.
UNDER NORMAL DRIVING AND CLIMATIC CONDITIONS
YOU SHOULD CHANGE THE FLUID EVERY TWO YEARS.
IF THE BRAKES UNDERGO SEVERE OPERATING CONDI-
TIONS THE LIQUID SHOULD BE REPLACED MORE FRE-
QUENTLY.
BS - 202
Tracking ID-422/tukxi/04/2013
MSS APE 50 (2012)