Doosan G20 SIIIA, Руководство по эксплуатации и техническому обслуживанию

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93 G20, 30, 40 SIIIA Operation & Maintenance Manual
4) Bleed the fuel system. Refer to inspection at 50
hours.
CAUTION
Be sure to use genuine Doosan part (super fine mesh
filter). Otherwise, it results in engine damage, uneven
engine performance and shorter engine life.
Changing oil/water separator element.
NOTE: The cartridge and bowl contain fuel. Take care
not to spill it during disassembly and
reassembly.
The fuel filter/separator also provides primary filtration
and the element ‘C’ should be changed every 500
operating hours or 6 months, whichever comes first.
Change procedure:
Unscrew the element ‘C’ from the head taking care not to
spill fuel inside the machine. Drain any fuel within into a
suitable container, then unscrew the clear bowl ‘D’ from
the element.
Discard the old element into a suitable container.
Remove the old ‘O’ ring from the bowl ‘D’ and install the
new one supplied with the element. Apply a light coat of
clean engine oil to the ‘O’ ring and screw the bowl ‘D’
onto the new element ‘C.
Using a clean cloth, wipe the sealing face of the filter/
separator head to ensure correct seating of the sealing
ring.
Fill the element/bowl assembly with clean fuel oil then
apply a light coat of clean engine oil to the new element
seal ring.
Screw the new element onto the head firmly by hand.
Follow the “fuel system air bleeding” procedure.
INSPECTION EVERY 1000 HOURS OPERATION
(a) Replacing cooling water
Cooling water contaminated with rust or water scale
-reduces the cooling effect. Even when antifreeze agent
(LLC) is mixed, the cooling water gets contaminated due
to deteriorated ingredients. Replace the cooling water at
least Once a year.
1) Remove the header tank cap.
2) Remove the bottom radiator hose of the radiator and
drain the cooling water.
3) After draining the cooling water, reconnect the hose.
4) Fill radiator and engine with cooling water via the
header tank.
WARNING
Wait until the temperature goes down before draining
the Cooling water. Otherwise, hot water may splash
to cause scalding.
(b) Adjusting intake / exhaust valve clearance
As this adjustment requires specialized knowledge and
skill, consult your Portable Power dealer. The adjustment
is necessary to maintain the correct timing for the
opening and closing of valves. Neglecting the adjustment
will cause the engine to run noisily and result in poor
engine performance and other damage.