Nine tricks to help you get the common faults of tractors

Nine tricks to help you get the common faults of tractors

1. High pressure oil pipe wear and oil leakage

If there is wear and oil leakage at the joints of the nozzles at the two ends of the high-pressure fuel pipe of the tractor, the oil can be cut from the waste cylinder mat. 1 round copper skin is tied in the middle. 1 small hole grinding slip can be between the bumps. The urgent need to solve the eyebrows.

2. Sudden shortage of oil supply

In the operation of the tractor, if the oil supply is insufficient, such as removing air, replacing the plunger, and the fuel injector, it is still ineffective. That is, the small steel ball in the fuel injection needle ejector of the injector is eccentrically caused to cause the fuel injection to be atomized. At this point, you should change one small steel ball or replace it with a bicycle flywheel.

3. Steering wheel shaking, front wheel swing

The phenomenon of steering wheel shaking and front wheel shaking is mainly caused by improper positioning of the front wheel and the small angle of the main pin. In the absence of instrument detection, try to add a wedge-shaped iron piece to the rear end of the leaf spring and the front axle support plane to make the front axle rotate backward and then increase the caster angle to test the operation.

4. Automatic shift after shifting

The phenomenon of automatic jump after the shifting of the tractor is mainly caused by the wear of the fork shaft groove, the weakening of the fork spring, and the excessive clearance of the joint of the connecting rod. At this time, it is necessary to use the repair positioning groove, replace the fork spring, and reduce the gap of the connecting rod joint to ensure the normal shifting.

5. Oil pump performance is poor

Solve the problem that the performance of the oil pump after overhaul or overhaul is poor. The engine can not be lifted for the first time. The oil filter or the oil discharge pipe can be removed, and then the oil can be filled from the oil outlet of the body with the oiler. Immediately, the filter or the oil is turned on. When the oil pipe of the indicator is activated, the oil will be pumped up.

6. Hydraulic oil pipe fatigue damage

Due to the frequent changes in oil pressure and high oil temperature, the hydraulic oil pipe is prone to fatigue and damage due to frequent pipe wall relaxation. In order to effectively extend the service life of the hydraulic oil pipe, the wire is fired into a spring shape and placed in the oil pipe for support.

7. Hydraulic brake locomotive brake failure

Carefully check the master cylinder and the sub-pump to see if the brake fluid has been replaced on time and the air in the brake line is completely removed and the brake pedal is in line with the scientific height.

8. Diesel engine burning oil

Check whether the cylinder liner piston group is worn, whether the piston ring spring force is weakened, whether the oil pan oil is excessively added, whether the air filter oil surface is too high, etc., if the cause of the blue smoke is still taken, the valve stem and the valve guide should be checked. The potential cause of excessive gaps.

9. Scale often causes engine temperature to be too high

Engine engine cooling pump scale will cause the engine temperature to be too high and accelerate the wear of the parts to reduce the oil consumption of the lubrication pump. The elimination method is as follows: pick 2 large loofahs to remove the skin and seeds, clean them, and put them into the water tank for regular replacement to remove the scale. The water in the water tank should not be changed frequently, which will increase the formation of scale.

There are many specific methods for fault analysis, inspection and judgment of tractors. In short, the principles of fault analysis and the method of inspection should be flexibly applied. Specific fault analysis should be carried out, and the structural principle of the machine should be contacted to find out the signs of failure. With the principle of “from the inside and the inside, from simple to complex”, try to remove as much as possible, do not blindly dismantle and unload, and disassemble and disassemble, and enhance our experience of discovering, analyzing, judging and troubleshooting in time. ability.

(Original title: Tractor nine common faults and troubleshooting methods)