HS code intelligence in freight auditing

List of the contents of this article:

• 1, Why is it difficult to start the tractor? What are the solutions?
• 2, How long does it take to overhaul the crankshaft of the tractor
• 3, What are the precautions after the tractor is repaired?
• 4
  、Guosan tractor engineMaintenance method of stepping on the accelerator line

Why is it difficult to start the tractor? What are the solutions?

The connection wire is faulty, the wiring column is loose and falling off, the oxidation is serious, and the contact is poor. Battery failure, such as insufficient power storage, or early damage to a certain battery, the battery wiring pile head is too dirty, poor contact. The start switch or ignition switch fails, such as the failure of the start gear. The contacts of the electromagnetic switch in the starter are eroded or not touched.

There may be many reasons why tractors are difficult to start. First of all, the fuel supply problem may lead to difficulty in starting. It may be that the fuel oil road is blocked, the fuel filter needs to be replaced or cleaned, or the fuel pump is faulty. ThatThe failure of the electrical system may be one of the problems, such as insufficient battery power, damage to the starting motor or poor contact.

First, the cylinder head nut is not tightened or the cylinder pad is damaged. If a leak is found on the junction surface between the cylinder head and the engine body when rotating the crankshaft, it may be that the cylinder head nut is not tightened or the cylinder pad is damaged. If it is the former, tighten it as needed.

In addition, the piston pin or shaft sleeve bites to death, so that the transmission shaft cannot rotate; the piston rod is installed in reverse or the air filter blockage makes the diesel engine unable to start, which is the reason why it is difficult for the tractor to start. The next time the large tractor is in operation, it will be difficult to start, and it can be checked from these aspects.

The cause of this failure is generally the fuel injection system. I. Fault phenomenon When startingThe crankshaft rotates normally, but it takes a long time to start, and there may be obvious signs of landing and it cannot be started.

How long does it take to overhaul the crankshaft of the tractor

This tractor generally needs to be repaired once every six months. Under normal circumstances, it is the first maintenance of 2,000 kilometers. Normal maintenanceIt mainly refers to the replacement of oil and three filters (air filter, machine filter, fuel filter). In addition, the valve gap, shaft tile wear, etc. should be checked regularly.

During the "Ninth Five-Year Plan" and in the following period, tractors will still grow at an annual growth rate of 7%. And how to ensure that such a large number of tractors can normally give full play to their due effectiveness and make new contributions to the development of rural economy is a problem that needs to be solved urgently.

If necessary, you can submit a list of replacement tools, spare parts, accessories or request replacement to the sales department. The following inspections should also be carried out for newly purchased or overhauled tractors: (1) Engine inspection 1 Start-up inspection. Add fuel, lubricating oil and cooling water according to the regulations.

The engine crankshaft replacement is an overhaul. The following is an introduction to the engine overhaul.Shao: Introduction: The key to overhaul of automobile engines includes replacing valves, pistons, cylinder liners, or boring cylinders, grinding shafts, etc.

What are the precautions after the tractor is repaired?

Don't tighten the screws and bolts too tightly. Use a torque wrench to tighten according to the tightening torque specified by the screws and bolts of the tractor's cylinder head, connecting rod, transmission box, wheel, front axle, etc. If the force is too strong, it will cause the thread sliding thread, buckle or bolts and screws to break. ( 2) To replace the lubricating oil, you need to clean the oil channel.

Cleaning the tractor. Regular cleaning can keep the tractor clean. When filling with fuel or lubricating oil, it can prevent dust and debris from entering the machine. And it can detect external hidden dangers in time to prevent blockage, damage and corrosion of parts.

Do a good job in the technical maintenance of agricultural machinery. Regularly carry out systematic cleaning, inspection, adjustment, fastening, lubrication and other technical maintenance of all parts of agricultural machinery, and regular replacement of some consumable parts can extend the service life of the machine, ensure the good technical condition of the machine, reduce the occurrence of machine failures and accidents, and reduce agricultural production costs.

Add brake fluid to the clutch, brake master pump hydraulic oil bottle, and check whether the oil pipe is leaking. The driver should maintain the vehicle diligently, and try not to overload the car when parking, do not drive a sick car, and do not drive illegally. Note: Newly purchased tractors need to apply for a tractor driving license and a driver's license.

Introduction to the maintenance method of Revo series tractor

The repair method of Revo tractor 1000 brakes is as follows: check the brake master pump and hydraulic oil line.Remove the chassis above the brake master pump. Turn off the power switch of the brake master pump. Just remove the brake master pump for repair.

Revo Tractor Method/Steps are as follows 1. Park the machine on the flat ground, remove the bucket, turn off the engine, remove the bucket cylinder oil pipe joint at the end of the arm, and install the plug. Start the engine and slowly lift the moving arm, so that the bucket cylinder piston rod slowly extends to the end of the bucket cylinder stroke under the action of its own weight.

First, start the Levo tractor vehicle, and then hang the gear after a while. If it doesn't work, the transmission needs to be repaired. Secondly, step on the clutch of the Revo tractor to the end to see if it can be hung up. If the parts of the Revo tractor clutch are damaged, it needs to be repaired.

Revo 904 tractor rear axle does not turn, there may be the following originalCause: The oil pressure of the rear axle changer is insufficient: it is necessary to check the hydraulic oil line and check whether the oil pipe, oil line joint, oil pump and storage tank of the changer part are normal. If the oil pump or oil pipe fails, it needs to be replaced or repaired.

Is the maintenance of tractor power output gear an overhaul?

1. This situation belongs to the maintenance of the gearbox, not an overhaul, so this situation is not a major accident. Identification standards for major accidents of second-hand cars: In the second-hand car market, accident cars refer to vehicles caused by accidents caused by non-natural loss, causing vehicle damage, resulting in a decline in mechanical properties and economic value.

2. It is a major repair. When disassembling the gearbox, the connection between the gearbox and the engine should be removed.Open, and then lift the whole gearbox down to separate the gearbox and the engine, so disassembling the gearbox assembly is counted as a major repair.

3. The cumulative use time of the tractor is up to 10 or 12 hours. You should check the maintenance, check the condition of dust, dirt, fuel tank and water tank, and whether the sound is abnormal.

4. Calculate. After replacing the gearbox, Maiteng needs to disassemble the gearbox and the engine connection, and then remove the entire gearbox. It is not an individual small part repair, so Maiteng's replacement of the gearbox is considered a major repair.

5. Tractors are generally used on construction sites. How much do you know about the repair methods for common faults of tractors such as high-pressure oil pipe wear and oil leakage, sudden lack of oil supply, steering wheel shaking, front wheel swing, and free gear jump after changing gears? The following are the repair methods for common faults of tractors that I have sorted out for you. I hope they can help you.

6. Half a year. The tractor overhaul crankshaft is the most important moving part of the diesel engine. When the crankshaft of the tractor is seriously worn out, it takes half a year to overhaul the tractor due to the complexity and difficulty of repairing the engine crankshaft.

The maintenance method of the accelerator line of the national third tractor engine

The maintenance method of the common faults of the tractor High-pressure oil pipe wear and oil leakage. Wear and oil leakage occurs at the convex head at both ends of the tractor's high-pressure oil pipe and the fuel injector and oil outlet valve. A round copper skin can be cut from the exhaust cylinder cushion, and a small hole can be made in the middle to grind and slip, and the cushion between the convex pits can relieve the urgent need.

In general, engine oil should be reduced first.Door, then step on the main clutch pedal, and then gradually step on the driving brake to control the pedal to make the tractor stop smoothly. When braking in an emergency, you should step on the main clutch pedal and the driving brake control pedal at the same time.

The steps are as follows: First, open the engine cover of the hand-held tractor and find the position of the throttle line. The throttle line is usually located in the upper or side of the engine and is connected to the throttle lever. Fix the new throttle cable to the throttle tie rod, put the fixed end of the throttle cable on the throttle tie rod, and tighten the screw or screw cap.

According to the relevant information, the throttle of the national third tractor line can be changed to an electronic throttle. The relevant steps are as follows. Remove the accelerator pedal plug, insert the flat screwdriver from the position of the yellow arrow, and then force in the direction of the red arrow, so that the plug can be easily removed.