PIAGGIO Beverly Tourer 250 i.e. Service Station Manual page 43

Beverly Tourer 250 i.e.
Possible Cause
Misshapen/worn valve seats
Worn cylinder, Worn or broken piston rings
Worn or broken piston rings or piston rings that have not been
fitted properly
Oil leaks from the couplings or from the gaskets
Worn valve oil guard
Worn valve guides
Insufficient lubrication pressure
Possible Cause
By-Pass remains open
Oil pump with excessive clearance
Oil filter too dirty
Oil level too low
Transmission and brakes
Clutch grabbing or performing inadequately
IRREGULAR CLUTCH PERFORMANCE OR SLIPPAGE
Possible Cause
Faulty clutch
Insufficient braking
Possible Cause
Inefficient braking system
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 stuck rubber gaskets
Replace the piston cylinder unit or just the piston rings
Check and replace the gaskets or restore the coupling seal
POOR LUBRICATION PRESSURE
Check the By-Pass and replace if required. Carefully clean the
Perform the dimensional checks on the oil pump components
Check that there is no grease on the masses. Check that the
clutch mass contact surface with the casing is mainly in the
centre with equivalent characteristics on the three masses.
Check that the clutch casing is not scored or worn in an anom-
INEFFICIENT BRAKING SYSTEM
Check the pad wear (1.5 min). Check that the brake discs are
not worn, scored or warped. Check the correct level of fluid in
the pumps and change brake fluid if necessary. Check there is
no air in the circuits; if necessary, bleed the air. Check that the
Failing elastic fittings, plunger or brake pump seals, replace
Check the brake disc screws are locked; measure the axial shift
of the disc with a dial gauge and with wheel mounted on the
BRAKES OVERHEATING
Check the brake disc screws are locked; use a dial gauge and
a wheel mounted on the vehicle to measure the axial shift of
Operation
Replace the head assembly
Replace the piston cylinder assembly or piston rings
Replace the valve oil guard
Check and replace the head unit if required
Operation
By-Pass area.
Replace the cartridge filter
Restore the level adding the recommended oil type
Operation
alous way
Operation
front brake calliper moves in axis with the disc.
scooter.
Operation
Replace the calliper.
the disc.
Clean carefully and blast with compressed air
Replace the calliper.
Troubleshooting
TROUBL - 43