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5.4.6
Draining water from the fuel tank
When handling fuel, make sure there are no open
flames or other fire hazards near the engine.
Wipe off any spilled fuel completely. Spilled fuel
can ignite and cause fire.
If fuel gets mixed with particles of foreign matter such as dust,
dirt, or water, it can cause not only a decrease of output but
also malfunctions of the fuel system. To avoid such problems,
drain fuel tank as described below.
1.
Position an oil pan (capacity of 2 litres or more) under the
drain cock of fuel tank.
2.
Open the drain cock of fuel tank and drain at least 1 or 2
litres of fuel.
3.
Make sure that all water and particles of foreign matter
are discharged with the fuel. Close the drain cock.
Figure 11 : Draining water from fuel tank
5.4.7
Replacing the raw water pump impeller
Both the impeller and the gasket between the pump case and
the cover should be replaced. So when ordering the impeller,
order a gasket, too (see Section 7, Spare parts). Remove the
cover to get access to the impeller. Remove the old impeller
with the help of two screwdrivers. Install the new impeller and
add some grease. Turn the blades in the direction of rotation of
the pump i.e. anti-clockwise looking at the impeller.
On Kubota-based M-GV/2 and M-GV 8 genverters, the pump
housing needs to be taken from the engine in order to gain
access to the cover. This is achieved by removing the bolts
shown in Figure 12. Remount the pump after changing the
impeller.
Figure 12: Pump housing: bolts to be unscrewed
5.4.8
Replacing the fuel filter
Filter change depends on the level of contamination of the fuel,
but should be done at least every 400 running hours. A clogged
M-GV/2, M-GV/3, M-GV/3+, M-GV 8, M-GV 10, M-GV 12 and M-GV 15
filter results in a lack of output of the engine and irregular
running. Before changing the filter, clamp off the supply line.
The arrow on the filter housings indicates the flow direction.
Remove the hoses from the old filter and fit the new filter.
Figure 13: Fuel filter (similar on all models)
5.4.9
Changing the air filter element
The genverter is standard supplied with an air inlet filter
element. Filter change depends on air quality.
Procedure:
1.
Unscrew the cover in order to gain access to the filter.
2.
Clean the foam around the element with compressed air
and clean the strainer element.
3.
Check the air filter and replace it when necessary (do not
clean the air filter element).
4.
Put back the cover and retighten the screws.
5.4.10
Checking hoses and electrical connections
Visually check cooling hoses, fuel hoses and electrical wiring,
paying particular attention to abrasion, wear and corrosion.
Have items replaced when necessary.
5.4.11
Servicing after 800 hours and beyond
This includes the items described above, but also procedures
requiring a professional diesel mechanic. Contact your
WhisperPower Service Centre. Please find some essential data
for Kubota-based genverters below:
Valve clearance: from 0.145 mm to 0.185 mm when the
engine is cold.
Rocker arm bracket nut M6 × 1: from 9.81 nm to 11.2 Nm
Cylinder head screw M8 × 1.25: from 38 Nm to 42 Nm.
5.5
PUTTING OUT OF SERVICE
When not using the genverter for a longer period it is
recommended to perform an engine preservation procedure.
1.
Clean the engine.
2.
Loosen the fuel suction pipe and fuel return and put them
in a can with preservation diesel fuel.
3.
Run the engine until it is on temperature, stop it and let it
cool down sufficiently to allow safe working.
4.
Drain the hot engine oil and refill with preservation oil.
5.
Disconnect the battery and store it in a dry place free of
frost and charge it regularly.
6.
Close inlet and outlet openings with tape.
7.
Protect the genverter against the influences of bad
weather conditions.
This method of preservation will be sufficient for 6 months.
Change
oil
before
May 2018
EN
MAINTENANCE
using
the
engine
again.
19
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