New Holland Workmaster 50, Руководство оператора, Страница: 162 / 184

8 - TROUBLESHOOTING
Problem
Possible Cause Correction
The engine stops after
ignition The electric cables are disconnected or
they do not guarantee continuity Check the electric connections
The engine does not reach
the operating speed Clogged fuel filter Replace filter (See “Fuel filter replace-
ment.”)
Presence of air in the fuel supply circuit Carry out bleeding (See “Fuel supply circuit
bleeding”)
Injection pump malfunction Apply to a service workshop
Dirty or faulty injectors Replace the injectors
Apply to a service workshop
Water and/or impurities in the fuel Apply to a service workshop
Clogged air filter Clean or replace the filter
Insufficient combustion air flow Apply to a service workshop
Engine overheating Apply to a service workshop
Overload Reduce the load
Emission of black smoke
from the exhaust pipe Dirty or faulty injectors
Replace the injectors
Apply to a service workshop
Faulty turbocharging turbine Replace the turbine
Apply to a service workshop
Light emission of white
smoke from the exhaust
pipe oil level too high Adjust the oil level
Worn segments Check compression
Apply to a service workshop
Worn valve guideways Check wear
Apply to a service workshop
Abundant emission of
white smoke from the
exhaust pipe Burnt gasket head Apply to a service workshop
Water pump malfunction Replace the pump
Apply to a service workshop
Replace the belt (See “Changing the belt
(type Poly-V)”)
Thermostat valve malfunction Replace the valve
Apply to a service workshop
Coolant too low Top up, if necessary (See “Engine coolant
level check”)
The pressure gauge
shows a too low engine
oil pressure and the
corresponding warning
light comes on Failure of pressure gauge Check or replace the pressure gauge
Apply to a service workshop
Oil level too low Adjust the oil level (See “Engine oil level
control”)
Oil pump failure Check or replace the pump
Apply to a service workshop
Faulty sensor Check and, if appropriate, replace the sen-
sor.
Apply to a service workshop
Engine oil filter blocked Replace the engine oil filter (See “Oil filter
cartridge replacement”)
The oil pressure warning
light comes on Engine oil pressure too low
Turn off the engine. Apply to a service
workshop
The coolant temperature
warning light comes on Coolant too low Adjust the engine coolant level (See “En-
gine coolant level check”)
Stuck overpressure valve of the load plug Replace the plug
Water pump malfunction
Replace the pump
Apply to a service workshop
Thermostat valve malfunction Replace the valve
Apply to a service workshop
8-2