PIAGGIO MSS X9 EVOLUTION 250, Workshop Manual

Page: 183 / 262

This section è is devoted to the description of the braking system components.
Interventions rules
General rules for maintenance operations on the hydraulic braking system.
WARNING
HYDRAULIC OIL IS CORROSIVE: ALWAYS WEAR PROTECTIVE GLOVES.
IN THE EVENT OF ACCIDENTAL CONTACT WITH THE EYES, RINSE THE CONTACT AREA WELL
WITH COPIOUS AMOUNTS OF WATER.
USED HYDRAULIC OIL CAN HARM THE ENVIRONMENT. COLLECTION AND DISPOSAL
SHOULD BE CARRIED OUT IN COMPLIANCE WITH CURRENT REGULATIONS.
N.B.
FOR TOPPING UP AND CHANGE, USE ONLY BRAKE FLUID DOT4 - NHTSA 116.
OBSERVE THE MAXIMUM DEGREE OF CLEANLINESS. HYDRAULIC FLUID IS EXTREMELY
CORROSIVE FOR PAINTED SURFACES.
BRAKE FLUID IS HYGROSCOPIC; THAT IS, IT ABSORBS MOISTURE FROM THE SURROUND-
ING AIR.
IF THE MOISTURE CONTENT IN THE BRAKE FLUID EXCEEDS A CERTAIN VALUE, IT WILL RE-
SULT IN POOR BRAKING EFFICIENCY DUE TO A LOW BOILING POINT OF THE FLUID.
N.B.
ALWAYS STORE THE FLUID IN SEALED CONTAINERS.
UNDER NORMAL DRIVING AND CLIMATIC CONDITIONS YOU SHOULD CHANGE THE FLUID
EVERY TWO YEARS. IF THE BRAKES ARE USED INTENSELY AND/OR IN HARSH CONDITIONS,
CHANGE THE FLUID MORE FREQUENTLY.
DURING INSTALLATION, THE PARTS TO BE REUSED MUST BE ABSOLUTELY CLEAN AND
FREE FROM ANY TRACES OF OIL, FUEL AND GREASE: IT IS THEREFORE NECESSARY TO
CLEAN THOROUGHLY WITH DENATURED ALCOHOL.
N.B.
RUBBER PARTS SHOULD NEVER BE LEFT IN ALCOHOL LONGER THAN 20 SECONDS. AFTER
WASHING, THE PIECES MUST BE DRIED WITH A BLAST OF COMPRESSED AIR AND A CLEAN
CLOTH.
THE SEAL RINGS MUST BE IMMERSED IN THE OPERATING FLUID; THE USE OF PRF1 PRO-
TECTIVE DEVICE IS ALLOWED.
WARNING
THE PRESENCE OF BRAKE FLUID ON THE DISC OR BRAKE PADS REDUCES BRAKING EFFI-
CIENCY.
IN THIS CASE, REPLACE THE PADS AND CLEAN THE DISC WITH A HIGH-QUALITY SOLVENT.
Rear brake calliper
MSS X9 Evolution 250
Braking system
BRAK SYS - 183