Kubota 07-CR-E5 Manual page 360

07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
(Continued)
[Precautions in handling Biodiesel fuels]
1. Keep the fuel tank full whenever possible to prevent water vapor from accumulating inside the fuel tank.
Tighten up the fuel tank filler cap to avoid the entry of moisture.
2. Routinely check the oil level before the operation.
Also strictly follow the specified oil change intervals.
3. Biodiesel fuels (BDF) during the supply process or in the machine easily deteriorate due to oxygen, water, heat
and other foreign substances. With this in mind, take the following precautions.
• Do not leave those fuels in the fuel tank or a metallic drum longer than 3 months.
• Before storing the engine for a prolonged period, change such fuel for a conventional type of diesel fuel and
run the engine for 30 minutes or longer to clean up the fuel system.
4. Bear it in mind that Biodiesel fuels have the characteristics below.
Referring to the servicing intervals specified in the KUBOTA product's Operator's Manuals, be sure to maintain
and clean up the fuel system, replace the fuel rubber piping with new ones and take other necessary measures.
It is advisable to replace the fuel filter with a new one after half the specified replacement intervals.
(Compared with the use of mineral oil diesel fuels, the filtration performance of fuel filters gets degraded earlier
than expected.)
• Biodiesel fuels easily induce the growth of microorganisms and foul themselves.
This may get the fuel system corroded and the fuel filter clogged.
• In cold weather, some problems may occur: the clog of the fuel line or fuel system, starting failure, and other
unforeseen troubles.
• Biodiesel fuels easily soak up moisture, which means that they may contain higher moisture content than
conventional diesel fuels.
5. Palm oil-based Biodiesel fuels are inferior in low temperature fluidity to soy-based and rapeseed-based Biodiesel
fuels.
In cold season in particular, this may clog the fuel filter.
6. If Biodiesel fuels are spilt on a coated surface, the coating may get damaged.
Immediately wipe the spill off the surface.
Fuel filter:
• At least, filter mesh below is required.
5 µm dust - dust collecting efficiency 95 % or more (Standard spec. filter)
– An additional filter which has higher cleaning efficiency may be required depending on the spec. (working
condition) or area. Even the maximum period of operation time is same, in case the cleaning efficiency has
improved, it is required to expand the size of a filter (A filter needs to be bigger.).
Criteria at the entrance of supply pump:
• Water content: Less than 0.05 % (500ppm)
– Use to compare with the analysis result by the third-party organization.
• Air: No existence (Do not modify the specific fuel pipe)
– Visually check is possible by using clear hose. Pay sufficient caution to contamination.
• Critical load: (at all operating conditions) −30 kPa or more
– Perform a measurement of the pressure depending on the situation.
1-S322
COMMON RAIL SYSTEM
9Y3200007CRS0517US0
KiSC issued 03, 2022 A