Important
The brake manufacturer advises against any servicing of the internal components of brake callipers or the master cylinder.
Incorrect overhaul of these critical safety components can endanger rider and passenger safety.
Before removing the parts in question, you must first carry out the following operations:

note
For the abs front braking system, also refer to sect. 7 - 5, Abs system operating information, sect. 7 - 6, System components, sect. 7 - 7, Abs components maintenance.
Unscrew and remove the special screw (22) fixing the pipes (33) to the rear brake calliper and the corresponding couplings (23).
Remove tube (33).
Undo the two fixing screws (12) of the rear brake calliper (15) to the calliper holder bracket and remove the brake calliper (15).
If it is necessary to remove the calliper holder bracket (a) refer to sec. 7 - 13, Removal of the rear wheel eccentric hub and rear wheel shaft.
Note
To replace the brake pads follow instructions in the paragraph "checking brake pad wear and changing brake pads" (sec. 4 - 3).
To remove the speed sensor (1), undo the retaining screw (2), having care not to damage the airgap spacer (8) and the washer (32).

Only the following parts should be renewed:
Refer to the exploded view at the beginning of this section for indications on renewal of the above components.
Refitting the rear brake control
Removal of the rear brake discTopping up the electrolyte
Warning
Before carrying out any operations on the battery, keep in mind the
safety standards (sect.1 - 3, General safety rules).
The electrolyte in the battery is toxic and can cause burns if it comes into
contact with the skin because it contains
sulphuric acid. Wear protective clothing, a ...
Main bearings
The main bearings have are of the angular contact type with offset inner
races so that the balls transmit loads from one
groove to the other along straight lines at an angle to the axis of the bearing.
The angle-contact ball bearings are
designed for bearing combined loading (radial-axial load ...
Bleeding of the abs hydraulic system
If some "sponginess" is detected on the brake control, due to air bubbles in
the system, bleed the system, as indicated in
sect. 4 - 3, Changing the brake fluid.
Before bleeding a brake pump, move back the calliper pistons, as indicated in
(sect. 4 - 3, Changing the brake fluid) to Drain in ...