Anomalies On Ldw903Focs Engine - Etesia HYDRO 124D Technical Training Manual

ANOMALIES ON LDW903FOCS ENGINE

The following checks must be made after you have ensured that the electrical parts of the machine are working correctly
(safety contactors, rodding...).
1.ENGINE DOES NOT START (Starter not working)
- Check the battery is in good condition (voltage and density)
- Check the terminals and battery terminals are in good condition and clean
- Check the electrical harness is in good condition (correct connection of the different plugs, check for traces of
oxidation).
- Check the keyed ignition switch is working correctly.
- Check the starter is working correctly
- Check the fuses are in good condition
- See if the engine is not blocked
- Turn the engine a quarter turn and try again with the starter
2.ENGINE DOES NOT START (Starter working)
- Check the fuses are in good condition
- Check if the fuel tank is full (not empty)
- Check the preheating relay is working.
- Check the heater plugs are working.
- Check the solenoid on the diesel filter is powered.
- Check the diesel prefilter is clean
- Check the air filter is clean
- Check circuit is sealed (leakage and air intake)
- Purge circuit
- Check the battery is in good condition (voltage and acid density) : 10% max. voltage drop on starting.
- Check the length of the fuel pump control rod
- Check the fuel pump valves are in good condition and clean.
- Check if the diesel inlet and return pipes are correctly connected to the engine.
- Check if the valve clearance is sufficient.
- Check the injectors are working properly*
3. ENGINE STARTS BUT DOES NOT RUN CORRECTLY.
- Check if the diesel tank is full.
- Ensure the diesel filter is in good condition
- Ensure the air filter is in good condition.
- See if the prefilter is not clogged.
- Check the length of the fuel pump control rod
- Check the fuel pump valves are in good condition and clean.
- Ensure the supply circuit is working properly (air intake).
- Ensure the valves have sufficient clearance
- Check the injectors*
- Check injection advance*
- Check the flow equalisation*
* Have the checks made by a LOMBARDINI agent or contact us before any intervention.
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