This is how bulldozers should be maintained in summer!

Precautions for cooling water

Distilled water, tap water, rainwater or clean river water should be used as the cooling water for diesel engines. It is strictly prohibited to use dirty water or hard water (well water, mineral water and other water with high salt content) to avoid scaling and corrosion of the cylinder liner. Only under hard water conditions must it be softened before use.

(2) When adding water to the radiator, it may not be possible to fully fill the cooling system at one time. After the diesel engine starts running, it should be checked again. If it is insufficient, it should be filled up. The water inlet of the cooling system is located at the top of the small top cover of the bulldozer.

(3) Under continuous operation, the cooling water should be replaced every 300 hours or so.

Air filter

If the air filter is carefully maintained technically in accordance with the usage regulations, not only can its service life be prolonged, but it can also provide a good working condition for the diesel engine. Therefore, the following points should be noted when using it:

(1) Every 100 to 200 hours of engine operation, the paper filter element should be removed and cleaned by vibrating or blowing compressed air (with a pressure not exceeding 0.49 MPa) from the center of the filter element outward or gently tapping its end surface. It is strictly forbidden to clean it with any oil or water.

(2) A new paper filter element should be replaced every 1,000 to 2,000 hours of operation.

(3) The internal safety filter element should be replaced every 3,000 to 4,000 hours of operation.

(4) If the paper filter element is clogged with oil, water or other contaminants, causing the engine exhaust to be too thick, and the situation still cannot be improved after cleaning the filter element or if the paper element is damaged, a new filter element should be replaced.

(5) The connecting pipeline between the air filter outlet and the diesel engine intake pipe, as well as the connection point between the air filter dust collection chamber and the exhaust ejector rubber hose, should be sealed reliably without any air leakage.

Regular maintenance

60-hour technical maintenance

(1) Adjust the tightness of the fan belt.

(2) Check the liquid level height and density of the battery electrolyte. If it is insufficient, replenish or charge it.

(3) Check whether there are any short circuits, open circuits or damages in the electrical system.

(4) Check the operation of the transmission system and the oil level. If there is a fault, it should be eliminated. If the oil is insufficient, it should be replenished.

(5) Check the tension of the tracks and make adjustments if necessary.

(6) Remove the dirt from the diesel engine oil pan and check the oil level.

(7) Check the oil levels in each hydraulic system and add oil. When a new machine is first used, the oil should be changed.

125 to 150 hours of technical maintenance

(1) Follow all the provisions of the 60-hour technical maintenance.

(2) Clean the filter elements of each oil filter.

(3) Replace all the cooling water.

(4) Adjust the fan belt.

(5) Clean the air filter element or replace it.

(6) Check the oil levels of all components in the transmission system and add oil if necessary.

(7) Check the oil level in the hydraulic control box and add oil if necessary.

300-hour technical maintenance

The technical maintenance shall be carried out in accordance with the provisions of each article for 125 to 150 hours.

(2) Clean each cooling system.

(3) Adjust the travel of each joystick.

(4) Tighten the bolts and nuts of the track plates.

(5) Check the lubricating oil of the guide wheel and the idler wheel, and inspect the working condition of the floating oil seal.

(6) Filter or replace the oil used in each lubrication system of the diesel engine.

500-hour technical maintenance

Change the filter element, engine oil, hydraulic oil and gear oil

1000-hour technical maintenance

Change the filter element, engine oil, hydraulic oil and gear oil

Special maintenance

In rainy and dusty working conditions, in addition to strictly following the regular maintenance regulations, special attention must be paid to the inspection and maintenance of the following items:

Tighten all the oil plugs to prevent water accumulation and corrosion.

(2) Clean the machine promptly after work is completed and carefully inspect the overall condition of the machine.

(3) Pay special attention to the cleanliness of the oil filling port, utensils, grease, etc.

(4) Check whether there is any mud or water in the final drive.

When there is a lot of dust, the fuel filler port of the diesel engine oil pan should be cleaned every 3 to 5 days.

Post-operation maintenance

Park the bulldozer on a flat surface, lower the blade and remove the soil from the vehicle. Check that the clutch does not slip, the transmission does not trip, does not overheat, and makes no noise. All parts have good sealing performance and no leakage.

(2) Check the traveling mechanism and steering mechanism of the bulldozer. They should be easy to operate, without any swaying of the head, and the tracks should not bite the rails or fall off.

(3) Check the working efficiency of the equipment to see if it operates normally without any abnormalities.