Agricultural vehicle maintenance small question and answer

1 What should you watch out for when assembling the drive shaft? Answer: To ensure that the drive shaft can be assembled in its original position after being disassembled, it must be marked before disassembly. When assembling, care should be taken to ensure that the universal joints at both ends of the drive shaft are in the same plane, and that the spline grooves and expansion joints of the drive shaft do not change. 2. How to remove the single-acting cylinder piston? A: The single-acting cylinder piston removal can use the following two methods: 2.1 The compressed air is used to press the piston out of the cylinder sleeve. Compressed air should be compressed from the inlet port of the cylinder (usually a bicycle pump), and the other infusion ports should be blocked to prevent gas leakage. 2.2 When the piston seal is severely damaged and it is difficult to disassemble it with compressed air, the cylinder head can be turned downward and the piston can be pulled out on the wood. 3. How to determine the failure of the hydraulic brake? A: 3.1 Continuously step on the brake pedal. If the pedal can gradually rise, and then continue to step down and feel flexible, then the air in the brake system should be eliminated. 3.2 If the brake pedal is continuously pressed on and the pedal is raised, but continues to step down, there is a feeling of pedal rise. This indicates that there is oil leakage in the pipeline, joint or the main pump and the branch pump, and the cause should be checked and eliminated. 3.3 If the pedal height is appropriate, there is no sense of elasticity and sinking when stepping down, but the braking effect is poor, it is a defect of the brake hub and the brake friction plate. If the friction plate is stained with oil and the rivet is exposed, the system will make The power is weakened, and if the brake is out of round, the main pump vent and the compensation hole are blocked, it may cause the brake to malfunction. 3.4 If the brake pedal does not work, but even a few steps, the pedal is raised, there is no elastic feeling, then the pedal free stroke and brake gap is too large, must be adjusted. 4. What is the hysteresis fault caused by the hydraulic brake? A: The brake lag means that all or part of the wheel will still have a braking effect when the brake pedal is raised after braking. The reasons are: 4.1 The brake pedal does not have a free stroke, or the pedal return spring falls off, is too soft or breaks. 4.2 The hydraulic pump cylinder blocks the balance hole and cannot return oil or return, or the hydraulic pump bowl swells, embolism is not working, and it cannot return after braking. 4.3 The clearance between the friction plate and the brake hub is too small, and the rubbing is performed, or the return spring of the shoe is broken and fails. 4.4 The brake shoe bearing pin is stuck with dirt and the brake shoe cannot rotate freely. After traveling for a distance, if all the wheels are found to be hot, it means that the fault is in the main pump. If any individual wheel is hot, the fault is on the wheel and should be promptly eliminated.

 Injection Device

Syringes can also call Disposable Medical Supplies, Disposable Syringe With Needle and Plastic Needle Tube such as some scientific instruments in chromatography to inject through the rubber septum. Injecting gas into a blood vessel will cause an air embolism. The way to remove air from the syringe to avoid embolism is to turn the syringe upside down, tap it lightly, and squeeze out a little bit of fluid before injecting into the bloodstream.

In some cases where accuracy is not the primary concern of germs, such as quantitative chemical analysis, glass syringes are still used due to the small error of the glass syringe and the smooth movement of the push rod.

You can also inject some of the juices into meat with a syringe to improve taste and texture while cooking, or into pastries when baking. Syringes can also fill ink cartridges with ink.

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