Troubleshooting - APRILIA SR MAX 125 ie Service Station Manual

SR MAX 125 ie
This section makes it possible to find what solutions to apply when troubleshooting.
For each failure, a list of the possible causes and pertaining operations is given.
Engine
Excessive oil consumption/Exhaust smoke
Possible Cause
Wrong valve adjustment
Overheated valves
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 seal
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
EXCESSIVE CONSUMPTION
Remove the head and the valves, grind or replace the valves
Replace the piston cylinder unit or just the piston rings
Check and replace the gaskets or restore the coupling seal
LOW LUBRICATION PRESSURE
Check the By-Pass and replace if required. Carefully clean the
Perform the dimensional checks on the oil pump components
Restore the level by adding the recommended oil type.
Check that there is no grease on the masses. Check that the
clutch mass faying surface with the bell is mainly in the centre
with equivalent characteristics on the three masses. Check that
the clutch housing is not scored or worn in an anomalous way
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
Operation
Adjust the valve clearance properly
Replace the head unit
Replace the piston cylinder assembly or piston rings
Replace the valve oil seal
Check and replace the head unit if required
Operation
By-Pass area.
Replace the cartridge filter
Operation
Operation
front brake calliper moves in axis with the disc.

Troubleshooting

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