In order to better maintain the state of the loader speed change device, reduce the frequency of wear and failure, reduce maintenance costs, and create more profits, we should pay attention to the maintenance of the Zhuang acrobatic system called the speed change system. , How to perform maintenance? The editor here sorts out the basic precautions and some maintenance suggestions, I hope it will help you.
1. Maintenance time of the variable speed system:
1. Daily maintenance: check the low oil level of the oil;
2. 50 hours (or weekly): check whether the variable speed control handle is flexible and effective;
3. 250 hours (only after the first 250 hours of work): cleaning the gearbox oil pan and gearbox filter element;
4. 500 hours: clean the oil pan filter and replace the transmission fluid;
5. 2000 hours: Check and repair the disassembly of gearbox and torque converter.
Loader repair
2. Inspection and replacement of hydraulic transmission oil for loader maintenance:
1. Fixed oil change interval.
Changing the oil at the correct time interval is the key to the longest working life of the components in the transmission. Only by ensuring a reasonable oil change interval can the lubricating and protective properties of the lubricating oil be exerted. Under normal circumstances, it should be based on the maintenance cycle recommended by the manufacturer, but this can only be relative, and it must be combined with the oil sample extraction and analysis results to know the actual working situation.
2. Use the correct method of draining and changing oil.
When draining the oil, the oil temperature should reach 40-50 ° C, and the oil flow should be discharged under agitation, and the dirty oil should be drained as completely as possible; when refueling, the oiler with a filter device should be used to add oil.
3. Use the correct oil for the transmission system, and the lubricating oil used in the gearbox should meet the specifications.
It should be noted that diesel oil cannot be added to the gearbox, because diesel oil will reduce the friction between moving parts such as pistons, and the oil used in the transmission system must have a certain friction between the friction plates when they are combined. , This friction is crucial to the normal operation of the transmission system. Only the correct use of lubricating oil can effectively extend the working life of clutch friction plates. At the same time, the correct use of oil can significantly improve the anti-wear performance of the gears, eliminate the clutch slip phenomenon, control the vibration and abnormal noise of the brake, increase the braking force, and provide greater traction. At present, the hydraulic transmission oil most used in the gearbox is 6 # and 8 # hydraulic transmission oil.
4. Refer to the replacement filter cycle provided in the maintenance manual, replace the filter in time, and at the same time clean the filter screen, oil drain magnet plug, and vent plug, and add lubricating oil according to the standard amount.
If the viscosity of the transmission oil is too high, it will cause the transmission efficiency of the transmission to be low, the fluidity is not good, and it is unfavorable for heat dissipation, and local dry friction may occur between high-speed relatively moving parts, which is unfavorable for lubrication; if the viscosity of the transmission oil is too small It can increase the amount of leakage, cause the transmission control oil pressure to be too low, and cause a failure. The strength of the oil film between the transmission components with a large load is not enough, resulting in early wear of the transmission components, which is also unfavorable for lubrication.
At the same time, in the normal operation of the gearbox, a small amount of bubbles will be generated due to the oil stirring of the gears. In order to prevent the accumulation of more bubbles, cavitation will occur, resulting in a reduction in the thickness of the oil film and affecting the operation of the clutch and its control valve inside the gearbox. , Transmission oil must have anti-foaming characteristics.
Therefore, the use of appropriate gearbox oil can not only protect the gearbox, extend the life of the gearbox, reduce the failure rate of the gearbox, but also reduce the direct cost of gearbox oil change maintenance and reduce the maintenance labor and maintenance of the gearbox. Parking time.
5. All kinds of lubricating oils must be pure, and after a period of precipitation, they should meet the specified quality requirements.
Oiling tools, containers and oil filling ports should be scrubbed clean to prevent moisture and dirt from entering the oil.
When checking the fuel quantity, the vehicle must be horizontal in both longitudinal and lateral directions.
