Lovol TE304 - Fuel System Venting

Maintenance Instruction
The engine coolant can be from boiled tap water or be
antifreezeValid duration of antifreeze is two years or 1600h. if
exceeding, change the antifreeze, flush the cooling system and
fill the new antifreeze.The removing of scale in cooling sytem:
add 750
ｇ
caustic soda and 150g kerosene in the 10L water,
then fill the mix into cooling sytem.Let the engine rotate at
intermediate speed for 5-
10min and shut it down. Keep the
solution stay for 10-12h (note: carry out thermal insulation for
winter to avoid freezing). Restart the engine and let it rotate at
intermediate speed for 20min. Stop it to drain the solution.
When the engine cools down, insert a water pipe into the
radiator to flush it. At this time, please open the drain valve on
the bottom of radiator.After that, close the drain valve and fill
water. Keep the engine running for 20min and drain water
again.After engine cooling down, fill the new antifreeze or
cooling water to specification.
Fig.5-26 Engine cooling system maintenance
5.18 Fuel system venting
T
he air may enter fuel pipe if tractor is out of use for long
time, replacing diesel filter element or emptying the fuel
tank.The air in the fuel system will lead to difficult start of
engine. Vaccum the fuel sytem when the fuel tank is filled up
and oil pipeline switch is turned on.

Loosen the bleed screw A on the fuel filter. Move the fuel
delivery pump handle B upward and dowmward until the
diesel is overflowed from the bleed screw without bubble
emerged.
 Tighten the bleed screw A again and loosen the bleed
screw on the fuel injection pump. Finally move the
handle B
on the fuel delivery pump upward and
downward until the diesel is overflowed from the bleed
screw without bubble emerged. The the bleed screw C
should be tightened.
Fig. 5-27 Fuel sytem venting
Important: engine must employ qualified light diesel. Generally, use 0# light diesel for summer and use -10#
light diesel for winter.The diesel should be clean and deposited for at least 48h before use. Otherwise, it will
shorten the engine life.
Important: in winter, as to the tractor without use of antifreeze, drain the water with engine idling if water
temperature is below 70℃, preventing the cooling water freezing related parts.
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