1. What are the daily maintenance aspects of excavators?
All nozzles and slewing bearings should be lubricated once every 10 day and twice at different angles every 4-8 hours. All reducers should be replaced within 520 hours after the first operation and 2-3 times in the second year. The engine must be warmed up for 10- 15 minutes before it can work.
Second, hydraulic oil is divided into winter and summer.
The oil used in winter is No.32 or No.46, and the oil used in summer is No.68 or 100, which must be anti-wear hydraulic oil. The difference is that the temperature in summer is high and the viscosity of hydraulic oil used is high, while the temperature in winter is low and the viscosity of hydraulic oil used is low.
3. Which parts of the excavator are easy to loosen?
Answer: The slewing bearing reducer and engine screws are loose, which requires thread glue and must be tightened firmly.
4. What should I pay attention to after parking?
Answer: Run at low speed 10- 15 minutes before flameout. First, the stick and bucket should be vertical to the ground, and the pilot valve should be moved several times to release all the pressure in the hydraulic oil system.
5. What is the internal structure of the rotary reducer?
Answer: Rotating motor, motor fixing frame, one-axis driver, three-star frame, one-axis, three-star hoist, driving gear ring and vertical shaft.
6. What is the internal structure of the walking reducer?
Answer: Walking motor, primary reducer, internal gear ring, three-star frame, three-star crane, reducer fixing frame, half shaft and driving wheel gear ring.
7. How to change gear oil for rotary reducer and walking reducer?
Answer: Drain the gear oil. After adding diesel oil, set the car up, idle for 5 minutes, and then add gear oil after draining diesel oil. Gear oil should be added to the double drive line 18, 120-9 with 3.5 liters of gear oil for walking reducers, 3.5 liters of gear oil for rotary reducers, 7 liters of gear oil for 70-8 walking reducers and 3 liters of gear oil for rotary reducers. Gear oil is added to the front axle and rear axle of the 85-7 wheel.
Eight, wheel excavator before operation should pay attention to what matters?
Answer: Before the wheel excavator works, the bulldozer blade and hind legs must be leveled, and the front steering wheel must be leveled with the wheel tray before it can work.
Nine, wheel excavator comprehensive maintenance points in several aspects?
Answer: Check the looseness of the screws of the whole vehicle regularly, and tighten the connecting plates of the front and rear axle screws of the slewing bearing and the walking part.
X. Oil leakage from hydraulic cylinder?
Answer: It is forbidden to terminate the hydraulic cylinder, which will lead to the early loosening of the hydraulic cylinder, the damage of the guide sleeve and the wear of the sealing ring. The sealing ring is normally worn during the control cylinder stroke, so replace the sealing ring. The seal is damaged by impurities in the hydraulic oil, and the filtered hydraulic oil should be replaced.
Sealed.
XI。 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, so as to ensure that the oil inlet pipeline is smooth and no air is allowed. Clean the net regularly or replace the filter element. Hydraulic oil is not allowed to contain water. Change hydraulic oil according to season. When changing the oil, the power source pump should loosen the exhaust bolt to exhaust the air.
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