Symptoms Of A Broken Car Drive Shaft And How To Eliminate It

1. The speed of the car changes suddenly while driving, and there is a metal knocking sound on the transmission shaft, which can indicate that the individual flange or universal joint cross shaft bearing is too worn and loose, causing abnormal noise of the transmission shaft.
2. When the car starts, the transmission shaft makes a “just dang” sound or a cluttered sound. When the car reverses backwards on a gentle slope, it makes an intermittent sound of “grid horn”, which means that the paint needle is broken or broken, and the paint needle bearing should be replaced. Maintenance manuals, circuit diagrams, incurable diseases and other space diaries are updated regularly every day. Auto Repair Resources sells various auto repair books and electronic auto repair materials. Friends who purchase materials, please see the 00 space album to buy.

3. When the car starts or shifts gears, the transmission shaft has obvious metal impact sound, and the low-speed gear is more obvious than the high-speed gear, mostly because the interference fit between the inner ring of the intermediate support and the shaft is reduced and the looseness causes abnormal noise.

4. When the car starts or drives, the transmission shaft always has an obvious “click” abnormal sound, accompanied by vibration, which means that the fixing bolts of the intermediate support bracket are loose and cause abnormal sound.

5. There is a crisp and rhythmic metal impact sound on the drive shaft when the car is running at low speed, and there is a clear sound when the car is out of gear and sliding. The pressing force of the multi-series universal joint bearing shell is too large, so that the bearing cannot rotate flexibly.

6. When the car is running, the sound of the drive shaft increases with the increase of the vehicle speed, and the intermediate support bearing emits a dull and continuous turbid sound, which means that the intermediate support bearing falls apart due to excessive wear.

When the car is driving, the drive shaft emits a continuous “woo” sound. First, check whether the fastening bolts of the rubber gasket spacer of the intermediate support bearing bracket are too tight or too loose (not according to the specified tightening torque requirements), so that the position of the bearing bracket is offset. incline. The tightness of the bearing cap bolts can be adjusted to eliminate abnormal noise faults. If there is still noise after adjusting the bearing preload, check the lubrication condition of the bearing. Reinstall the bearing and bracket.

7. During the driving of the car, the sound of the drive shaft is disordered and irregular, and sometimes there is a metal impact sound, which means that the universal joint forks at both ends of the drive shaft are not in the latter plane, which will destroy the constant velocity arrangement.

8. There is abnormal noise on the drive shaft when the car is driving at high speed, and the abnormal noise of the drive shaft still exists when the car is out of gear and sliding, the raceway of the multi-series intermediate support bearing is damaged, or the installation position of the intermediate support bearing bracket is offset.

9. In order to further verify the correctness of the above diagnosis, you can inspect and shake each part of the transmission shaft by hand when parking to check whether the installation position is correct, whether there are any scratches on the surface of the parts, whether the fastening connection is loose, and whether the matching clearance is too loose or too large. tight.