PIAGGIO Runner 125 - Overhaul

Overhaul
1) Remove the brake lever by loosening the fixing screw;
open the cover (2) and take out the diaphragm (3);
2) Remove the cap and unscrew the internal parts in the specified order;
3) Check that:
- The body of the pump shows no signs of internal damage or corrosion;
- The piston shows no sign of damage or abnormal wear;
- The piston return spring is in good condition.
Refitting
Reinstall the individual parts in the reverse order to the removal, paying attention to the correct posi-
tioning of the rubber parts in order to ensure leak tightness.
1. Tank cover screw
2. Tank cover
3. Diaphragm
4. Bellows
5. Seal ring
6. Piston
7. Gasket
8. Spring
9. Tank
CAUTION
ALL THE SEALS AND GASKETS MUST BE REPLACED EVERY TIME THE PUMP IS SERVICED.
Refitting
Before fitting, the parts must be perfectly clean and
free of traces of oil, diesel fuel, grease, etc.. They
should be washed thoroughly in denatured alcohol
before proceeding.
- Reinstall the individual parts in the reverse order
to the removal, paying attention to the correct po-
sitioning of the rubber parts in order to ensure leak
tightness.
1 - Tank cap screw.
2. Tank cover.
3. Diaphragm.
4. Bellows.
5. Sealing ring.
Braking system Runner 125 - 200
BRAK SYS - 254