The automobile chassis abnormal sound fault diagnosis system

Here are many galletto 2 automobile chassis abnormal sound fault diagnosis strategy:
1, engine knock and rear axle abnormal sound resolution
Car driving on a flat road mileage, rear axle temperature rose to ordinary, after which when the autos with abnormal noises, note the pace, parking, set the transmission in the neutral place, and after that slowly accelerate , until the engine velocity will be the speed with abnormal sound quite observe the occurrence of any abnormal sound, is often repeated many instances to find out whether or not the abnormal sound caused by an abnormal condition from the exhaust or engine.
2, tire noise and rear axle noise resolution
Tire noise with digiprog 3 the road surface alterations, rear axle noise is not really. When the motor vehicle speed is less than 48km / h, the rear axle noise disappears, plus the tire noise persists. Autos with and sliding noise in the tire could be the similar, however the noise with the rear axle are distinctive.
3, wheel hub bearing abnormal sound plus the resolution from the rear axle noise
Car trip and glide, the same front wheel bearing noise, such as keeping the identical pace and slightly utilized brake can wheel load bearing to cut back aspect load, therefore weakened the noise, noise sources may be uncovered in which.
When pace higher than 48km / h, unless of course the rear axle really serious harm, below ordinary circumstances the rear wheel bearing noise hardly ever heard, vehicle glide or neutral, crack over the rear wheel bearing will have a "Long halogen sound, and erosion rear wheel bearing concern "imperfections" sound.
Reducer cone lively bearing and also the resolution of your differential bearing abnormal sound
Reducer bearings are generally harsh "Long halogen sound or" rattle "sound, secure, sound beats varies using the pace of alter.
Reducer cone pinion front bearing sound once the motor vehicle is sliding rear bearing noise in motion.
The differential bearing noise is generally a constant shrill sound, nevertheless it beats than reducer conical pinion gear bearing noise is substantially a lot more relaxed.
5, the resolution in the rear axle gear noise
In the normal launch x-431 straight operating, because of the differential side gears and planetary gears is almost no relative motion, so do not hear noise.
Vehicle was rear axle gear abnormal sound is primarily triggered by poor lubrication, leading to reducer gear grind scars, abnormal sound is usually heard within a selection of sliding velocity, is illustrated by the reducer pinion nut loosening brought about.
Low pace, the rear axle web page of percussion, situation especially dull abnormal sound when accelerating or decelerating. The fault can be detected from one or several motives:
The differential side gears journal and the differential situation the clearance inappropriate.
Differential cross shaft journal and differential situation mismatch.
Axle shell out improper critical gear and differential side gear keyway backlash.
Differential axle gear as well as planetary gear meshing inappropriate backlash.
The differential digimaster 3 tapered lively, passive improper gear mesh backlash.
Thrust washer dress in.
The automobile is working, abnormal sound inside the rear axle differential bearing pre-load improperly adjusted or the two due to the improper gear meshing clearance. Exclude abnormal sound, you might want to open the check out the differential gear reducer gear meshing clearance, the reducer cone drive gear bearing pre-load and gear reducer get hold of marks.

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