When repairing construction machinery, the phenomenon of indiscriminate use of bolts is still prominent, because the performance and quality of bolts do not meet the technical requirements, resulting in frequent mechanical failures after maintenance.
Engine cylinder compression is a key factor affecting power shortage. The way to judge the compression is simple. Take the S195 diesel engine as an example: shake the crankshaft without decompression. When the compression force is large, shake it up and relax the handle, but do not leave the handle. There is a large rebound force, indicating that the compression force is good, and on the contrary,
When the engine is working, open the mouth cover of the oil, if a thick smoke emerges from the flap, it means that the gap between the piston rings of the cylinder wall is excessively worn or over-limit. If the gap does not meet the requirements, it should be repaired in time. Open the valve cover. If there is green or white smoke coming out from the root of the valve (ie the valve working face),
Electrical system maintenance and precautions hydraulic system maintenance and precautions The hydraulic fluid temperature is still high during and immediately after the operation, so be careful when checking and servicing the hydraulic system.
Special reminder, relative to the car of the age, the car with the breaker for a long time must change the hydraulic oil on time, many of the faults are caused by the hydraulic oil, of course, the hydraulic oil is thicker when the car is cold, so the pressure when the car is cold Basically, the flow rate can be guaranteed. Once the temperature of the hydraulic oil rises to about 60 degrees, the op
check the cylinder seal (1) Check the boom and bucket cylinders: 1. Adjust to the same state as when measuring the natural drop, and the engine is turned off. 2. Operate the boom lever to the lift position and operate the bucket lever to the bucket lift position.
First, clean air conditioning filter 1. Remove the wing bolt (1) from the inspection window at the bottom left of the cab, and then take out the inner circulation air conditioner. 2. Clean the air conditioning filter with compressed air. If the air filter is oily or dirty, rinse with neutral media. After rinsing in water, allow it to dry thoroughly before reuse.
Some cylinder heads are made of aluminum alloy. At this time, the cleaning liquid can be prepared according to the ratio of sodium silicate (commonly known as soda ash) 50 g, liquid soap 20 g, water 10 kg, and added to the water tank cooling system for about one hour. Release the cleaning solution and wash it with water. Please note:
What are the reasons for the slow movement of the excavator?
Excavator Construction Machinery Spare Parts Market
