APRILIA 1997 Leonardo 125, Руководство по обслуживанию и ремонту

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REPAIRS
8 - 12
8.1.6 BRAKES
8.1.7 CHASSIS PART
MALFUNCTION SYMPTOM AND POSSIBLE CAUSES REMEDY
Low braking power. 1) Brake fluid leakage from hydraulic system.
2) Worn pads.
3) Contacts surfaces of pads dirty with oil, grease or brake fluid.
4) Worn brake disc.
5) Air in hydraulic circuit.
6) Brake disc dirty with oil, grease or brake fluid. Repair or change.
Change.
Change pads.
Change disc.
Bleed circuit.
Clean.
Brakes creak. 1) Pad contact surfaces hardened.
2) Pads installed the wrong way round.
3) Wheel bearing damaged.
4) Front or rear wheel pin loose.
5) Worn pads.
6) Foreign matters in brake fluid.
7) Return hole from brake pump clogged.
Restore surfaces with sandpaper.
Install correctly.
Change.
Tighten with prescribed driving
torque.
Change.
Change brake fluid.
Disassemble and clean brake
pump.
Excessive stroke of brake lever. 1) Air in hydraulic circuit.
2) Insufficient brake fluid.
3) Unsuitable brake fluid.
4) Brake calliper pins blocked.
Tighten with prescribed driving
torque.
Change.
Change piston and/or body.
Check.
Brake fluid leakage. 1) Insufficient tightening of connection fittings.
2) Cracked pipes.
3) Piston and/or body worn.
Tighten with prescribed driving
torque.
Change.
Change piston and/or body.
MALFUNCTION SYMPTOM AND POSSIBLE CAUSES REMEDY
Hard steering. 1) Steering adjusting nut excessively tightened.
2) Steering bearing broken.
3) Steering axis deformed.
4) Insufficient tyre pressure. Adjust.
Change.
Change.
Adjust.
Steering not fluid 1) Steering bearing seats or balls damaged. Change
Handlebars oscillate. 1) Unbalanced adjustment of fork rods.
2) Deformed fork.
3) Front wheel pin deformed or deformed tyre.
4) Steering column metal ring slack. Adjust.
Change.
Change.
Tighten.
Front wheel oscillates. 1) Wheel rim deformed.
2) Front wheel bearings worn.
3) Faulty or unsuitable tyre.
4) Wheel pin nut loose.
5) Unsuitable/insufficient fork oil. Change.
Change.
Change.
Tighten.
Top up or change.
Fork too soft. 1) Springs yielded.
2) Insufficient fork oil. Change.
Top up.
Fork too rigid. 1) Fork oil too viscous.
2) Too much oil in the fork. Change.
Remove excess oil.
Noisy fork. 1) Insufficient fork oil.
2) Engine connection element and shock absorber screws and nuts loose. Top up.
Tighten.
Rear wheel oscillates. 1) Wheel rim deformed.
2) Rear wheel bearings worn.
3) Faulty or unsuitable tyre.
4) Engine connection element silent-blocks damaged or worn.
5) Shock absorber connection (to engine) silent-blocks damaged or worn.
6) Shock absorber connection (to shock absorber) silent-blocks damaged or
worn.
7) Engine connection element and shock absorber screws and nuts loose.
8) Caliper/shock absorber support transversal oscillation.
Change.
Change.
Change.
Change.
Change.
Change.
Tighten.
Unscrew the wheel fastening nut,
change the wheel position and
then tighten the wheel fastening
nut.
Rear suspension too soft. 1) Shock absorber spring yielded.
2) Adjusting device badly adjusted.
3) Oil leakage from shock absorber. Change.
Adjust.
Change.
Rear suspension too rigid. 1) Adjusting device badly adjusted.
2) Shock absorber pin deformed.
3) Engine connection element deformed.
4) Engine connection element silent-blocks damaged or worn.
5) Shock absorber connection (to engine) silent-blocks damaged or worn.
6) Shock absorber connection (to shock absorber) silent-blocks damaged or
worn.
Adjust.
Change.
Change.
Change.
Change.
Change.
Rear suspension noisy. 1) Engine connection element and shock absorber screws and nuts loose.
2) Engine connection element silent-blocks damaged or worn.
3) Shock absorber connection (to engine) silent-blocks damaged or worn.
4) Shock absorber connection (to shock absorber) silent-blocks damaged or
worn.
Tighten.
Change.
Change.
Change.