The purpose of regular protection and maintenance of wheel loader is to reduce the faults of the machine and extend the service life of the machine; shorten the downtime of the machine; improve the operating efficiency and reduce the operating cost. Only need to deal with fuel oil, smooth oil, water and air, you can reduce 70% problems. In fact, about 70% of the problems are caused by poor management.
1. The handling of fuel oil should be based on different environmental temperatures. Diesel fuel should not be mixed with impurities, dirt and water, otherwise the fuel pump will be prematurely worn; the content of paraffin and sulfur in poor quality fuel is high, which will Hazard occurs; after the daily operation, the fuel tank should be filled with fuel to avoid water droplets on the inner wall of the fuel tank; before the daily operation, open the drain valve at the bottom of the fuel tank to drain the water; after the engine fuel is exhausted or the filter element is replaced, it must be drained air. Minimum ambient temperature 0 ℃ -10 ℃ -20 ℃ -30 ℃ Diesel trademark 0 # -10 # -20 # -35 #.
2. Handling of other oils Other oils include engine oil, hydraulic oil, gear oil, etc .; oils of different brands and different grades cannot be mixed; different types of loader oils add chemical effects or physical properties during the production process The effect of the additives is different; to ensure that the oil is clean, to avoid mixing of debris (water, dust, particles, etc.); according to the ambient temperature and the use of the oil label. When the ambient temperature is high, the motor oil with high viscosity should be selected. If the ambient temperature is low, the oil with low viscosity should be selected. The viscosity of the gear oil is relatively large to adapt to the larger transmission load. The viscosity of the hydraulic oil is relatively small to reduce liquid activity. resistance. 3. The use of smooth oil (butter) for smooth grease can reduce the wear of the sports surface and avoid noise. During storage and storage of smooth grease, dust, sand, water and other impurities should not be mixed; it is recommended to choose lithium-based smooth grease G2-L1, which has good anti-wear performance and is suitable for heavy-duty working conditions; when filling, try to squeeze all the old oil Go out and wipe clean to avoid sand adhesion.
First, the content of regular maintenance (1) After the new machine operates 250H, the fuel filter and the additional fuel filter should be replaced; check the air gap of the engine valve.
Second, daily maintenance; view, clean or replace the air filter; clean the interior of the cooling system; view and tighten the track shoe bolts; view and adjust the track back tension; view the air intake heater; replace the bucket teeth; adjust the bucket gap; view Front window cleaning fluid level; view, adjust air conditioner; clean cab floor; replace breaker filter element (optional accessory). When cleaning the inside of the cooling system, after the engine is sufficiently cooled, slowly unscrew the water inlet cover and release the internal pressure of the water tank before releasing the water; do not perform cleaning operations during the operation of the engine, high-speed rotating electric fan will pose a risk; when cleaning or When replacing the coolant, the machine should be parked on level ground.
3. Check items before launching the engine. Check the height of the liquid level of the coolant (add water); check the engine oil level, add oil; check the fuel oil level (add fuel); check the hydraulic oil level (add hydraulic oil); check whether the air filter is blocked; check the wire ; Check whether the horn is normal; check the smoothness of the bucket; check the water and sediment in the oil-water separator.
Fourth, every 100 maintenance items. Boom cylinder cylinder head pin; boom foot pin; boom cylinder cylinder rod end; stick cylinder cylinder head pin; boom arm and arm joint pin; stick cylinder cylinder rod end; bucket cylinder cylinder head pin ; Half rod connecting rod connection pin; stick, bucket cylinder cylinder rod end; bucket cylinder cylinder head pin; stick connecting rod connection pin; check the oil level in the reverse organization box (plus oil); from the fuel tank Discharge water and sediment.
Fifth, every 250H maintenance items. Check the oil level in the final gearbox (plus gear oil); check the battery electrolyte; replace the oil in the oil pan of the engine, replace the filter element of the engine; smooth reverse support (2 places); check the tension of the fan belt, And check the tension of the air conditioner compressor belt, and make adjustments.
6. Maintenance of the filter element The filter element has the effect of filtering impurities in the oil or gas path, preventing it from invading the system and forming defects; various filter elements should be replaced regularly according to the requirements of the (Operation and Maintenance Manual); when replacing the filter element, you should check whether There is metal attached to the old filter element. If metal particles are found, timely diagnosis and improvement measures are taken; a pure filter element that meets the machine's regulations is used. The filtering ability of the inferior and inferior filter element is poor, and the quality of each person and data on the filter layer does not meet the requirements, which will seriously affect the normal use of the machine.
Seventh, every 1000h maintenance items. Carry out every 100, 250 and 500h maintenance items together; replace the oil in the reverse tissue box; check the oil level of the shock absorber shell (return to the oil); check all the fasteners of the turbocharger; check the turbocharger The clearance of the rotor; viewing and replacing the tension of the generator belt; replacing the anti-corrosion filter element; replacing the oil in the final drive box. (8) Maintenance items every 2000h. First complete the maintenance items every 100, 250, 500 and 1000h; clean the hydraulic oil tank filter; clean and view the turbocharger; view the generator, start the motor; view the engine valve clearance (and adjust); view the damper. (9) Maintenance above 4000h. Add a view of the pump every 4000h; add an item to replace the hydraulic oil every 5000h. (10) Long-term storage. When the machine is stored for a long time, in order to avoid the rust of the piston rod of the hydraulic cylinder, the operating device should be placed on the ground; after the machine is washed and dried, it should be stored in a dry environment indoors; if it is restricted by the conditions, it can only be stored outdoors. Park the machine on a concrete floor with excellent drainage; fill the fuel tank before storage, smooth all parts, replace hydraulic oil and oil, apply a thin layer of butter to the exposed metal surface of the piston rod of the hydraulic cylinder, remove the negative terminal of the battery, Or unload the battery and store it separately; add an appropriate amount of antifreeze in the cooling water according to the minimum ambient temperature; start the engine once a month and operate the machine to smooth the moving parts and charge the battery together; turn on the air conditioning and work for 5-10min . Having said so much, I believe you are aware of the daily protection and maintenance of the loader. Xiansong Construction Machinery expects you to pay attention to the quality of oil 名媛直播 and filter elements when you maintain the equipment in the future, so that the equipment can be healthy, continuous and efficient. To create more value.
Eight, maintenance items every 500h. Carry out every 100 and 250H maintenance items together; replace the fuel filter; check the height of the smooth grease of the reverse pinion (plus smooth grease); view and clean the radiator fins, oil cooler fins and suspect radiator fins; replace hydraulic Oil filter; replace the oil in the final transmission box (only for the first time at 500h, and once after 1000h); clean the air filter inside and outside the air conditioner system; replace the hydraulic oil vent filter.
