Nanni Q2400 Series, Руководство пользователя

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105
S11 TROUBLE SHOOTING
TROUBLE SHOOTING
CAUTION!
If the engine does not work properly, use the following ta-
ble to identify the cause. If the cause cannot be found,
contact an authorised Nanni workshop.
THE ENGINE IS DIFFICULT TO START
Defect Solutions
The fuel is thick
and does not
flow well.
• See tank and fuel filter.
• Remove water and dirt.
• All fuel will be filtered through the
filter, if there is water or other for -
eign matter on the filter, clean it
with paraffin.
Air or water in
the system.
• The fuel pump does not work if
there is air in the fuel lines.
• Check all pipe connections.
• Bleed the fuel system.
Incorrect valve
clearances.
• Adjust the valve clearance of the
cold engine.
Valve leaks. • Rode the valves.
Injection pump
timing.
• Check the timing of the pump.
Thick oil in
winter and
engine starting
poorly
• Change the type of oil according
to weather conditions.
Compression
too low.
• Valve, piston, cylinder and ring
wear.
Flat battery.
• Charge the battery.
• In winter, store the battery in a
frost-free place. Recharge it peri -
odically.
LOW POWER OUTPUT
Defect Solutions
Compression
too low.
• Wear of valves, pistons, cylinders
and rings.
• Attempt to break in the valves.
Lack of fuel.
• Fill up with fuel.
• Check fuel supply and possible air
intakes.
Overheating of
parts.
• Check lubrication.
• Check oil filter.
• Dirt in the oil filter.
• Check bearing clearance.
• Check injection pump timing.
• Adjust the distribution.
Incorrect valve
clearances.
• Adjust the valve clearance of the
cold engine.
Injection pump
timing.
• Check the timing of the pump.
Dirty air filter.
• Change or clean the air filter every
100 hours.
Fuel pressure
too low.
• Check the injection.
Injection pump
wear.
• Do not use poor quality fuel as it
will cause wear to the pump. (See
“FUEL” in the “Fluids” section).
• Check the fuel injection pump el-
ement and the delivery valve as -
sembly and replace them if nec -
essary.