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III. Maintenance items to be performed once every 100 hours or every half a month
1. Remove foreign matters from all air-cooled radiator surface of the machine to ensure that
the cooling system can operate normally;
2. Carry out the following operations if these 100-hour items are performed on the machine
for the first time, or skip it: replace the transmission oil, the oil filters of the transmission
and torque converter and the outer oil filter of transmission and torque converter; (the
filter is optional, not for all machines) open the bottom cover of the transmission; clean
the filter net and the magnet carefully and then put them back in place.
IV. Maintenance items to be performed once every 250 hours or every month
1. Check the air intake system of the engine. Visually check the service indicator of the air
filter.
Clean or replace the filter element of the air filter if the yellow piston of the
indicator rises into the red region;
2. Replace the engine oil, the engine oil filter, the fuel oil filter and the oil-water separator
filter element.(the filter is optional, not for all machines)
3. Adjust the tension of the driving pulley of the engine and the air conditioning compressor
belt and the generator belt, check the damaged condition and replace it if necessary.
Tighten all bolts fixed the battery and clean its top;
4. Check the implement, weld seam of the front and rear parts of the frame and fixed bolts
whether they have cracks or loosening.
5. Carry out the following operations if these 250-hour items are performed on the machine
for the first time, or skip it: collect and filter the working hydraulic oil, replace the oil intake
filter element, replace the return oil filter element for the working hydraulic oil, clean the
inside of the hydraulic oil tank, return the filtered hydraulic oil to the hydraulic oil tank, and
replenish the hydraulic oil tank as necessary to ensure an appropriate oil level in the tank;
(Note: When replacing the hydraulic oil filter element, the original hydraulic oil must be
filtered or replaced).
V. Maintenance items to be performed once every 500 hours or every three months
1. Tighten the bolts for connecting the front/rear axle and the frames, and the plate bolts for
articulating the front and rear parts of the frame. Check the structure, hood and cab of the
machine whether they are damaged, repair them as necessary.
2. Check and eliminate the water and impurities in the diesel tank, clean the oil filter and
respirator; check and adjust the engine air valve.
3. Check the brake pads and disks and replace them if any brake pad is less than 2/3 thick
and any damaging brake disk;
4. Collect and filter the working hydraulic oil, replace the oil intake filter element of the
hydraulic oil tank, clean the hydraulic oil tank, return the filtered hydraulic oil to the
hydraulic oil tank, and replenish the hydraulic oil tank as necessary to ensure an
appropriate oil level in the tank; (Note: When replacing the hydraulic oil filter element, the
original hydraulic oil must be filtered or replaced)
5.
Replace the oil in the transmission, the oil filters of the transmission and torque converter
and the outer oil filter of transmission and torque converter (the filter is optional, not for all
machines); open the bottom cover of the transmission, clean the filter net and the magnet
carefully, and then put them back in place;
6. Replace the oil for the final reducer at both ends of the drive axle, as well as the oil for the
