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The Vehicle Failure
Diagnosis of the first failure might be measured. Application of gauges and instruments in accordance with national standards for car parts and various parameters of the effective measure of fault diagnosis and debugging is an indispensable method. Don’t overlook using launch x431.Measure the length of use to the meter stick, and the length of the measure, including diameter, gap and displacement measurement to make use of to micrometer, micrometers, plug, plug ruler, tape measure, etc.; force and gravity measurements to make use of to measure force meter, and weighing devices, etc.; pressure and vacuum measurement use to gauge and vacuum table, etc.. Automotive measuring instruments also have quite a lot of measurement units, equivalent to use for the measurement of sound pressure sound pressure level of dB values; for voltage measurement to the underlying remote switch ac value of such use.
For the steering system failure, use the instrument and the front wheel before the beam measured value of the steering wheels and so forth before the beam; use the tire pressure gauge tire pressure measurement; point scale the amount available when necessary the rotation of the steering wheel to the precise determine cause of the malfunction. For the engine failure, to measure the cylinder in the engine cylinder after the dissolution of the diameter, measured piston diameter, thickness and open space, etc., to identify the precise cause of the failure to repair the engine; is to repair to re-measurement of the cylinder tube diameter, and in accordance with the necessities of groups, matching the piston and piston rings so as to repair the engine.
Diagnosis of electronic control system failure, much more indispensable measure, similar to unstable or power of the lower engine work, the suspected oil pressure is insufficient, we must use the pressure gauge pressure measurement system; suspected electrical control system electronic control problems, necessary to make use of digital multimeter measuring voltage and resistance; with frequency counter and oscilloscope measurements resembling frequency and amplitude. Hence a wide range of measurement instruments and scales are maintenance personnel extension of eyes and hands, only to accurately determine the correct measure, while the seat of your pants is just the surface, the measurement method and instrumentation method combining using more measurement devices ought to be more accurate diagnosis.
Will also be sub-test for diagnosis of faults. lexia3 on solving problems may be very effect. The so-called sub-checking method is the car mechanics of the motor vehicles on the road, with the system piping and check the nature of the fault line of labor, inspections will probably be in accordance with the system starting from the power source system to the enforcement agencies along the route lookup can also be available after to pre-order search, you’ll find from the middle, depending on the experience of the examiner. If suddenly from the implementing agencies to seek out an excellent course, or should return back to previous search.
For instance, and directions for lighting system failure, the principle ought to be power on – switch – fuse – Relay – wire – light bulb line, front to back beginning to find that experience can first check the fuse, some people might first check light bulbs, there’s people may first check relay, when the front to back or forward, finding out may occur in the middle of the issue could also be bad combination switch, there could also be broken wire somewhere.
The brake system failure, the principle on the brake pedal needs to be – vacuum boosters – brake master cylinder – Brake Lines – load sensing valve – brake pipe – wheel brakes with a view to be checked. For experience you’ll be able to from the wheel brake or brake master cylinder started checking, after which check the opposite part; but difficult for the brake system failure, it needs to be after using measuring instruments used to to check and measure. To search out the reason for the malfunction.
The steering drive system failure, the principle on the steering wheel should be – Steering – Steering gear – steering wheel of the order of inspection. For convenience, you’ll be able to shift gears from somewhere open, easier to find out fault within the steering gear or transmission of the rear part. Use of the present theoretical knowledge, with the sub-test for orderly conduct of inspection, will eventually find the foundation causes of failure.
Partial disassembly method can also diagnose faults..Called partial disassembly method, that’s, car mechanics Yijing identify a fault within the assembly Mouge After it, a time not Zhunquepanduan which half of the failures occurred, they can in accordance with the assembly of the working principle of the demolition of a neighborhood Bufen function check, after which put something in the tactic. If the tactic used properly, can immediately determine the positioning of fault, therefore, be thought to be a simple partial disassembly method of rapid diagnosis of vehicle remote switch ac faults.Partial disassembly method and test method has many similarities, the difference is mainly local demolition method to demolition, dismantling and take a look at again in a diagnostic faults.
For example, a suspected engine cylinder is not working, single-cylinder off oil removal method can be utilized to check, remove the partial demolition of a high pressure pipe fittings cylinder engine running in both speed and sound change is that the tank is working properly; without reflecting will not be working properly.A few of the perfect major to diagnostic techniques, similar to mb star.Lack of engine power when the suspect blocked air filter, you can try removing the air filter core engine, reminiscent of the facility of the air filter case without recovery, fault here.
Partial disassembly method is definitely to work the engine or the electric lack of the unique function, while movements in non-normal conditions, it must watch out disassembly, when it comes to security projects to take appropriate safety measures. Better technology has launch x431, lexia3, mb star. All of the fault diagnosis methods are complementary, the aim is to seek out the car the fault occurred. Flexible use of fault diagnosis, fault can find cars, targeted on the cars and engines maintenance, restoration of normal use function.
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