1. The fuel filter element and additional fuel filter element should be replaced after 250 hours of operation, and the air gap of engine valve should be checked.
2. Daily Maintenance; Check, Wash or Change Air Filter; Clean the cooling system; Check and tighten the crawler bolts; Check and moderately adjust the back tension of the crawler; Check the intake heater; Change the bucket teeth; Adjust the clearance of the bucket; Check the liquid level of the front window; Check and adjust the air conditioning; Clean the cab. Flooring; replace the filter cartridge (selections). When cleaning the inside of the cooling system, slowly loosen the cover of the water injection nozzle after the engine has cooled sufficiently to release the internal pressure of the water tank before releasing water. Replace coolant and corrosion inhibitor according to table 3. The proportion of antifreeze and water is required to be added.
3. Because the lengthened arm of Shandong excavator is longer, heavier and more inertia than the standard arm, it is lighter than the standard arm in operation, and the operation process should be stable, and the action should not be too fast and violent, so it is not suitable for emergency braking.
The excavator capacity is used according to the factory standard, and it is strictly prohibited to replace the bucket with large capacity.
Special attention to accessories maintenance:
Bearing is an important part of mechanical equipment, its main function is to support the mechanical rotating body, reduce its friction coefficient in the process of motion, and ensure its rotary accuracy. According to the different friction properties of moving elements, bearings can be divided into two categories: rolling bearings and sliding bearings. Among them, the rolling bearing has been standardized and serialized, but compared with the sliding bearing, its radial dimension, vibration and noise are larger, and the price is higher.
Sliding bearing: Bearing under sliding friction. Sliding bearing works smoothly, reliably and without noise. Under the condition of liquid lubrication, the sliding surface is separated by lubricating oil without direct contact, and the friction loss and surface wear can be greatly reduced. The oil film also has the ability of absorbing vibration, but the starting friction resistance is large.
Rolling bearing is a kind of precise mechanical element which changes the sliding friction between the running shaft and the shaft seat into rolling friction and reduces the friction loss. Rolling bearings are generally made up of four parts: inner ring, outer ring, rolling element and cage.
The working and walking grounds of excavators should be smooth and solid, and the soft ground should be padded with sleepers or pads. In swamp areas, the roadbed should be treated first, or the special Caterpillar board for wetland should be replaced.
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