The locomotive problem is not diagnosed

Home>Bearing knowledge>The problem of locomotive disease is not opened
/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131";

The locomotive problem is not diagnosed

Source: China Bearing Network Time: 2013-04-15

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
If you do not open the diagnosis, you can judge the skill status or fault of the locomotive without disassembling. This method can prevent the formation of manpower, material resources and moments of disintegration (especially blind disassembly) due to disassembly; Forming damage to machine parts. The method of diagnosis will not be opened as follows:
1. Temperature, smoke color change locomotive in the operation; after some episodes of attack; often also form changes in temperature, smoke or odor; therefore, it is possible to go through some changes in the operation as a viewing method; to prove that some do have Faulty.
.1) Temperature change. If a cylinder does not work; some cylinder heads and cylinders of the cylinder must be at a low temperature, such as a spindle burnt; the spindle is adjacent to the body temperature is high; the body heats up and the oil is transpiration; There is a blue-gray or white smoke in the crankcase that overflows from the vent hole. If the brake is slippery, the brake drum must be heated; there is odor and smoke.
.2) Flue gas changes. If the exhaust pipe emits strong black smoke; the load is too heavy; the oil supply is too large; the injection quality is poor, if blue smoke is used, then the oil is burned, if it is grayish white smoke; The temperature of the body is too low or there is water in the oil.
.3) odor. If the friction plate, brake band, transmission belt, insulating varnish, engine oil, etc. are burned out; the corresponding odor will overflow; it can be felt through the sense of smell; it is also provided for the analysis of the parts of the attack. Some basis.
2. The consultation method asks the driver and the repairman about the signs and conditions before and after the locomotive attack; perhaps check the records of the vehicle and the records of the protection and repair files; as a reference for judging the locomotive problems.
3. The investigation method discriminates the fault of the locomotive after investigating the abnormal appearance of the machine; if there are water leakage, oil leakage, air leakage and leakage appearance on the surface of the locomotive; the oil temperature, oil pressure and water temperature are not normal; the light is not bright.
4. The broken cylinder method sequentially stops the supply or incineration of a certain cylinder; investigates the change of the signs of the disease; to determine which cylinder of the locomotive has a problem.
5. The heuristic method is used to analyze the locomotive fault process; the reason for some faults cannot be accurately discriminated at one time; some tentative viewing and adjustment methods are selected; the changes of the signs of the disease are investigated; to verify whether the facts can be confirmed.
6. When the replacement method is used to analyze the problem; there is doubt about a certain part or part; it can be replaced by spare parts with good skill condition; change the condition according to the signs before and after the replacement; and determine whether the skill status of the original part can be normal.
7. Using the target assessment method to analyze the degree of wear of the machine parts through the change rules of the target. For example, according to the ratio of the engine oil consumption to the main fuel consumption; the degree of wear of the cylinder liner piston group is derived, according to the initiator main oil. The oil pressure drop value; the degree of wear of the crankshaft bearing is derived.
8. The selection method is very troublesome for some inconvenient viewing or viewing; there is no fault factor for viewing methods; it is not directly viewed; but it is screened out by other factors, and the rest is the true cause of the problem.
9. Auscultation locomotive or starter has abnormal sounds in the operation; but I don't know where the attack is; can use a stethoscope or a screwdriver to auscultate; after each cylinder sounds different or different parts change the sound to repeat the comparison; then according to the internal parts location and cooperation Contact; discriminate which part of the sound is caused by it; then get the basis for judging the cause of the fault.
10. The "Pulse" method uses the appearance and gauges to test the relevant skill specification values ​​to analyze the faults and skill status. For example, the instrument measures the power, speed, pressure, temperature, flow rate, etc. of the initiator.
When starting the machine operation; hold the high-pressure oil pipe by hand; judge the operation condition of each cylinder by feeling the pulsation condition when the fuel injection pump presses the oil; that is, “put the pulse”. When this method is used; the auscultation method and temperature feeling can be contacted together. The method is to analyze and compare; to determine the location of the faulty tank and the cause of the attack. The usual conditions are: large pulsation, strong squeaking sound and high temperature at the time of sputum; indicating that the single cylinder oil supply is too large, and vice versa; indicating the single cylinder fuel supply bias宦龆螅 ( (5) carboxy 鹾 鹾 湮 湮 鹊 鹊 槐砻 槐砻 缬 缬 push acetabular cone 蛘敕Эㄗ 蚨 蚨 蚨 哐褂 哐褂 哐褂 哐褂 哐褂 哐褂 哐褂 哐褂 哐褂 哐褂 哐褂 哐褂 哐褂 哐褂 哐褂 哐褂龆.(5)舨徽: Retired 湮 湮 撸槐砻 撸槐砻 撸槐砻 缬 缬 缬 缬 沽 沽 陆 担 担 砘涣 砘涣 辉 辉 辉 辉 辉 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈 芗笆狈Still embarrassed.
11. Comparing the method to determine the operation of a cylinder is not normal; to further determine the location of the fault location; can remove a faulty high-pressure tubing joint on the fuel injection pump; and then step down the throttle; press the start button Comparing the height of the oil column ejected by the diesel fuel in the two oil pipe joints of the fuel injection pump. If there is a problem, the height of the oil column is the same as that of the one cylinder without the fault; the clarification of the fault is formed in the injector or the poor sealing performance of the cylinder, and vice versa. Faulty in the fuel injection pump.

Recommend to friends comments close window

Bearing related knowledge
New technology for anti-rust between fine bearing processes teaches you to properly clean INA textile sealed bearings
View and fault treatment in IKO bearing operation
NSK bearing application process attention to matters of choice of fine machine tool spindle bearing selection


This article links to http://
Please indicate the bearing network http://

Previous:The substantial noise of FAG bearings (2)
Next: The specification of the scrap bearing

Shopping Cart Casters series is a special casters series. It has widely applications in shopping mall. The wheel material can be optional by PU, TPE, single-dish elevator, 2-dish elevator and 3-dish elevator. These wheel materials are all outstanding on silence, floor protection, and shock absorbing. The elevator caster even has special functions when pushing the Shopping cart on the elevator, with preventing from slipping away. In summary, this casters series is very practical in daily life.

The products have certificate to ensure the quality.

supermarket casters

This casters series has widelt applications in our daily life, such as shopping cart, elevator shopping cart and shopping mall.

zinc plated supermarket  casters

Shopping Cart Casters

Shopping Cart Casters, Swivel Shoping Cart Caster, 4 Inch Shopping Cart Caster, 5 Inch Shopping Cart Caster

Ningbo Mywin Caster Co., Ltd. , http://www.mywin-caster.com