1、 What are the aspects of daily maintenance of excavator?
Grease all grease fittings and slewing bearings once every 10 days and 15 days. Grease twice every 4-8 hours at different angles. Replace each reducer within 520 hours after the first operation, and replace it 2-3 times a year later. The engine must be preheated for 10-15 minutes before it can work.
2、 Hydraulic oil is divided into winter and summer
The oil used in winter is 32 or 46, and the oil used in summer is 68 or 100. It must be anti-wear hydraulic oil. The difference is that the temperature in summer is high, the viscosity of the hydraulic oil used is high, and the temperature in winter is low, and the viscosity of the hydraulic oil used is low.
3、 What parts of the excavator are easy to loosen?
Answer: the screws of slewing ring reducer and engine are loose. It is required to apply thread sealant and must be tightened firmly.
4、 What should I do after parking?
Answer: before flameout, it must run at low speed for 10-15 minutes. First, make the stick and bucket perpendicular to the ground, move the pilot valve several times, and relieve all the pressure in the hydraulic oil system.
5、 What is the inner structure of the rotary reducer?
Answer: rotary motor, motor fixed frame, one shaft driver, three-star frame, one shaft, three-star hoist, drive ring gear and vertical shaft.
6、 What is the internal structure of the walking reducer?
Answer: traveling motor, primary reducer, internal gear ring, three-star frame, three-star hoist, reducer fixed frame, half shaft, drive gear ring.
7、 How to change the gear oil of rotary reducer and walking reducer?
Answer: drain the gear oil. After adding diesel oil, lift up the truck and idle for 5 minutes, drain the diesel oil and then add gear oil. The gear oil should be added to double drive line 18, 120-9 traveling reducer with 3.5 liters of gear oil each, rotary reducer with 3.5 liters of gear oil, 70-8 traveling reducer with 7 liters of gear oil each, and rotary reducer with 3 liters of gear oil. Add gear oil to 85-7 wheeled front axle and gear oil to rear axle
8、 What precautions should be taken before the operation of wheeled excavator?
Answer: before the wheel excavator works, the bulldozer and the rear outrigger must be leveled, and the front steering wheel must be leveled with the wheel before it can work.
9、 How many aspects does the comprehensive maintenance of wheeled excavator fall into?
A: regularly check the looseness of the screws of the whole vehicle and the fastening of the screw connecting plates of the slewing ring and the front and rear axles of the traveling part.
10、 Hydraulic cylinder, oil leakage?
Answer: it is strictly forbidden to terminate the hydraulic oil cylinder, which will lead to the early falling off of the movable air of the oil cylinder and the damage of the guide sleeve, the wear of the seal ring, the control of the oil cylinder stroke, the normal wear of the seal ring, and the replacement of the seal. If the seal is damaged due to impurities in the hydraulic oil, replace the filtered hydraulic oil
Sealing element.
11、 How to maintain the main pump of excavator?
Answer: first of all, the hydraulic oil used must be clean and conform to the use label of the season at that time. Ensure that the oil inlet pipe is unblocked. No air is allowed. Clean the net or replace the filter element regularly. The hydraulic oil is not allowed to contain water. Replace the hydraulic oil according to the season. When replacing the oil and refueling, the power source pump should loosen the exhaust bolt and exhaust the air.
