First, the tractor maintenance

After the tractor has worked for a certain period of time, due to changes in operation, friction, vibration, and load, it is inevitable that loosening of the connecting parts of each part, wear, corrosion, fatigue, aging of the parts, and clogging of debris will result in a decrease in the locomotive horsepower. Increased fuel consumption, reduced ergonomics, misaligned parts, and even damage. In order to keep the locomotives in good technical condition and prolong their service life, a series of technical maintenance measures such as inspection, cleaning, lubrication, fastening, adjustment, or replacement of certain parts must be promptly performed on all parts of the locomotive.

1. Regularly check the technical status of the front wheel positioning and steering device. Regular inspection of the front wheel alignment, front wheel bearing clearance, and steering device is an important measure to reduce tire wear and reduce deformation and damage of walking parts. The tractor should be checked according to the required value of each tractor and adjusted if necessary. Especially pay attention to the front wheel toe, front wheel bearing clearance, knuckle spindle fixing nut and tie rod fixing nut.

2, in strict accordance with operating procedures. Be stable at the start, drive at low speeds in fields and uneven roads, do not overtake the fields, ditches, and high-speed sharp turns at high speeds. Maintain medium-speed driving during transportation operations and avoid emergency braking as much as possible. Select the appropriate gear according to the size of the load. Do not overload the tractor.

3, maintain normal tire pressure and track tension. Pressure is too high, buffer effect is weakened, tractor vibration is aggravated, it is easy to damage parts and cause driver fatigue; air pressure is large in field operation, adhesion performance is deteriorated, and the amount of sinking and rolling resistance will increase, when the pressure is too high It may even cause the inner tube to burst. If the air pressure is too low, the tire deforms greatly, which increases the running resistance and causes the tire to heat, accelerate aging and damage. Tire pressure should be appropriately selected depending on the season, air temperature, and operating conditions. If the tracks of the crawler tractor are too loose, the track shoes, track pins, and wheels will be accelerated. In severe cases, derailment and rails may occur, resulting in mechanical damage.

Must pay attention to daily inspection and maintenance, keep all parts clean. Always check the tightening of parts such as hub bolts, nuts, and cotter pins to keep them secure. Each class applies grease to the swing shaft sleeve, front axle and steering knuckle, etc.; always check the oil level of the tumbler, guide wheel, roller, etc., add lubricating oil if necessary, and clean and change regularly as required. oil. Remove mud and oil in time. Keep the walking parts clean, especially with care not to contaminate the tires with gasoline, diesel, oil, and acids and alkalis to prevent corrosion. When disassembling the tires, do not use sharp sharp tools to prevent damage to the tires. Pay attention to the direction of the tire treads during installation. From the top down, the word "man" or "eight" must be headed toward the tractor. Periodically, spare parts such as left and right tires, driving wheels, crankshafts and caterpillars are used interchangeably to extend the service life.

Second, the elimination of common faults

1, high-pressure pipe wear oil leakage. Tractor tractor high-pressure fuel pipe at both ends of the nose and the injector, the oil valve leakage at the place of wear, can be cut from the waste cylinder mat round copper, a small hole in the middle grinding, slipping between the embossed pit It can be solved urgently.

2, sudden shortage of oil supply. Insufficient fuel supply during operation of the tractor, after the air is replaced by the plunger and the fuel injection nozzle, it is still not effective. That is, the small ball in the ejector pin of the fuel injector is eccentrically worn so that the fuel injection cannot be atomized. At this point, a small steel ball should be replaced, and if not, a bicycle flywheel steel ball can be used instead.

3. Shake the steering wheel and swing the front wheel. There was a shake in the steering wheel and a phenomenon of shaking his head in the front wheel, which was mainly due to the improper positioning of the front wheels, and the fact that the caster angle was too small. In the absence of instrument detection, try to add a wedge-shaped iron piece to the rear end of the plane of the leaf spring and the front axle support so that the front axle can be turned back and then the caster angle can be increased. After the trial run, it can return to normal.

4, free gearshift after shifting. In the operation of the tractor, there is a phenomenon of free skipping after shifting, which is mainly caused by the wear of the fork shaft groove, weakening of the fork spring, and the excessive clearance of the connecting rod joint part. At this time, repair slot should be used, fork spring should be replaced, and the gap between connecting rods should be reduced. After shifting into position, normal speed can be ensured.

5, poor performance of oil pump. In order to solve the problem that the overhauled or overhauled locomotive is not able to start the oil pump pump for the first time, the oil filter or the oil outlet pipe should be removed, then the oil filter should be used to fill the oil outlet hole with the oil, and the filter should be replaced immediately. Or the oil pipe leading to the oil indicator, after starting, the oil will be pumped up.

6, hydraulic hose fatigue breakage. Due to the frequent change of oil pressure and high oil temperature, the hydraulic oil pipe causes the pipe wall to be frequently opened, and is prone to fatigue damage. In order to effectively extend the service life of the hydraulic hose, it is best to use a thin wire burning spring to put it into the tubing for support.

7, hydraulic brake brake failure. It is necessary to carefully check the master cylinder and the branch cylinder, and whether or not the brake oil is replaced on time, completely eliminate the air in the brake line, and check whether the brake pedal meets the scientific height. The pneumatic braking locomotive must check to adjust the maximum brake working pressure and check whether the brake cup and hose have abnormal changes.

8, diesel engine oil burning blue smoke. Diesel engine oil burning blue smoke, in addition to checking whether the cylinder sleeve piston group wear, piston ring elasticity is weakened, whether the sum of oil sump oil is added, the air filter oil surface is too high and still does not solve the problem, should pay attention to check the valve The potential gap between the lever and the valve guide is too large.

9. Scale causes excessive engine temperature. Many engine cooling pump scales can cause excessive engine temperatures, accelerated parts wear, lower power, and burn the oil of the lubricating pump. The most scientific approach is to pick two large loofahs, remove the skins and seeds, and put them in the water tank after cleaning. Regular replacement will remove scale. Water tank water should not be changed frequently. Changing the ground will increase the formation of scale.

10, inner tube slowly spread gas. Slowly spread rubber inner tires, the inner air should be exhausted as much as possible, use a stiff paper as a funnel to insert the valve, take two tablespoons of talcum powder poured into the inner tube, after the completion of the valve core according to the standard charge air. The talcum powder is diffusely adhered to the tire's sidewall after being dispersed in the fetus, which can effectively prevent the tiny pores from spreading slowly and effectively.

The above are just some emergency measures. If you want to solve the problem in a comprehensive manner, you must go to the repair shop to repair it.

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