Brakes Overheating - VESPA GTV 125 Service Station Manual

Troubleshooting
Possible Cause
Fluid leakage in hydraulic braking system
Brake disc slack or distorted

Brakes overheating

Possible Cause
Defective sliding of pistons
Brake disc slack or distorted
Clogged compensation holes on the pump
Swollen or glued rubber gaskets
Electrical system
Battery
Possible Cause
Battery
Turn signal lights malfunction
Possible Cause
Electronic ignition device failure
Steering and suspensions
TROUBL - 6
the circuits; if necessary, bleed the air. Check that
the front brake calliper moves in axis with the disc.
Failing elastic fittings, plunger or brake pump
Check the brake disc screws are locked; measure
the axial shift of the disc with a dial gauge and with
BRAKES OVERHEATING
Check calliper and replace any damaged part.
Check the brake disc screws are locked; use a dial
gauge and a wheel mounted on the vehicle to
Clean carefully and blast with compressed air
BATTERY
This is the device in the system that requires the
most frequent attention and the most thorough
maintenance. If the vehicle is not used for some
time (1 month or more) the battery needs to be re-
charged periodically. The battery runs down com-
pletely in the course of 3 months. If the battery is
fitted on a motorcycle, be careful not to invert the
connections, keeping in mind that the black ground
wire is connected to the negative terminal while the
red wire is connected to the terminal marked+.
TURN INDICATOR NOT WORKING
With the key switch set to "ON" jump the contacts
1 (Blue - Black) and 5 (Red/Blue) on the control
unit connector. If by operating the turn indicator
control the lights are not steadily on, replace the
control unit; otherwise, check the cable harness
Vespa GTV 125
Operation
seals, replace
wheel mounted on the scooter.
Operation
measure the axial shift of the disc.
Replace gaskets.
Operation
Operation
and the switch.