Replacing The Pressure Divider Valve - PIAGGIO X9 500 cc Service Manual

Braking system
Note: Take care to properly insert the specially designed
projection on the pump clevis in the related hole in the
handlebar (see figure).
- Complete the overhaul by filling and bleeding the
circuit.
- The removing procedure is the same for both brake
pumps (see figure).

Replacing the pressure divider valve

Removal
Should the braking action between the front left and
rear calipers by unevenly distributed (e.g. with the
same surface and adhesive force on both wheels the
rear brake jams while the front brake is not applied or
vice versa, or the brakes work in a completely different
manner, or the divider valve does not work properly),
follow these steps:
- Empty the combined brake circuit as previously de-
scribed.
- Remove the front countershield as described in Chap-
ter 8-Bodywork.
- Unscrew rear caliper connection 1 (see figure).
Note: Place a rag under the divider valve to prevent
brake fluid from soiling the brake pads or other compo-
nents.
- Remove front brake caliper connection 2.
- Remove connection 3, conveying the fluid from the
pump to the valve.
- Remove the two cheese-headed socket screws fixing
the valve to the frame in the two holes shown in the
figure.
- Remove the valve and replace it with a new one.
Fitting
Follow the reverse procedure to the removal.
Note: Fit new copper gaskets on the connections.
- Tighten the screws fixing the valve to the frame and,
above all, the connections on the brake lines with the
prescribed torque.
- Fill and bleed the brake circuit as previously de-
scribed.
7 - 8
3
Tightening torques:
Oil pump - Integral braking device tube
connection: 16 - 20 N·m
Front brake caliper - Integral braking device con-
nection: 20 - 25 N·m
Rear brake caliper - Integral braking device connec-
tion: 20 - 25 N·m
07_015
2
1
07_016
07_017