Agrison HP ULTRA Series Operation Manual page 65

into water tank to flush it, and here the water drain valve at the bottom of water tank should be
opened. After end of cleaning, close the water drain valve; inject water and make engine run
several minutes, and then drain water. After the engine is cooled, inject new anti-freezing solution
or cooling water as required.
Important matters:
1. In winter, the concentration of anti-freezing solution shall be checked frequently
according to weather conditions. If inappropriate, the solution shall regain normal
concentration immediately. As for tractors free of anti-freeing solution, water shall
be exhausted under the circumstance of idle running of engine when water
temperature drops below 70℃ (Celsius), for fear of frost cracking of machine body
arising by frozen cooling water.
2. To prevent blocking in the inner of water pipe of radiator core, and formation of
incrustant, it is sure that the anti-freezing solution of qualified manufactory must
be used.
3. The radiator must not contact any acid, alkaline or other corrosive substances for
fear of being corroded.
4. Radiator must be installed and washed carefully without damage or bruising.
4.2.2.19 Maintenance of breathers
After tractor closes down, breathers will be detached one after another, and washed with
clean diesel oil before carried on tractor The air in the oil circuit must be removed while installation.
4.2.2.20 Exhaust of fuel system
When a tractor has been idle for long, diesel filter core is being replaced or when the air in oil
tank is exhausted, air will probably enter oil circuit. The air in fuel system will make engine start-up
difficult. Therefore, it must be removed according to the following steps when the oil tank is full and
oil circuit breaker is in the on position, i.e. loose the air bleed screw of oil filter, put the draw Knob
of oil transfer pump hand pump up and down until there is no bubble in the diesel oil flowing out of
air bleed screw; screw down air bleed screw again and loose air bleed screw on injection pump,
put draw knob of oil transfer pump hand pump up and down until there is no bubble in the diesel oil
flowing gout of air bleed pump; then tighten air bleed screw again.
Important matters:
1.
The engine must be provided with high-quality light diesel oil in accordance with
operation specification. Generally, 0# light diesel oil is used in summer, while -10#
light diesel oil is used in winter (see diesel engine operation specification for
details). Diesel oil must be pure, and be subject to at least 48-hour purification by
precipitation before use.
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Maintenance Instructions
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