Front Brake Calliper - Derbi boulevard 125 4t Workshop Manual

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Braking system

Front brake calliper

Removal
- Inspect the condition of the hoses, packing and
joint. In the event of fluid leaks from the calliper,
this must be replaced.
- Detach the oil brake pipe from the calliper; pour
the fluid inside a container.
- Remove the clamps shown in the figure.
Overhaul
Proceed as follows:
1) remove the two male hexagonal screws (1) and
take out the two pads (10);
2) remove the two male hexagonal screws (2) and
remove the reaction plate (3);
3) take out the fixed plate (4) from the guide;
4) remove the internal elements from the floating
body (5) with the help of short blows of com-
pressed air through the brake fluid pipe in order to
facilitate the expulsion of pistons (6).
5) Check:
- that the plates and the body are whole and in
good condition;
- that the cylinder and the floating body of the cal-
liper do not show signs of scratches or erosion,
otherwise replace the entire calliper;
- that the guides of the fixed plate are not scratched
or eroded, otherwise replace the entire plate;
- that the brake pad check spring works properly.
Reassembly
1) insert the pistons (6) and the sealing rings (7) in
the body;
BRAK SYS - 166

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