Troubleshooting Symptoms and Malfunctions of Driveshaft Damage

Troubleshooting Symptoms and Malfunctions of Driveshaft Damage

1. If the speed of the car changes suddenly while driving and there is a metal knocking sound on the transmission shaft, it means that some flanges or universal joint cross bearings are too worn and loose, resulting in abnormal noise of the transmission shaft.

2. When the car is started, the transmission shaft has a "bang" sound or the noise is very confusing. Makes a sound when the car reverses backwards on a gentle slope. The intermittent sound of "beeping" indicates that the needle roller is broken or broken, and the needle roller bearing should be replaced.

3. When the car is started or shifted, the drive shaft has obvious metal impact sound, and the low-speed shift is more obvious than the high-speed shift, mainly due to the reduction of the interference fit between the inner ring of the middle support and the shaft, and the abnormal noise caused by looseness .

4. When the car is started or running, there is always an abnormal sound of the drive shaft "clicking" accompanied by vibration, which means that the fixing bolts of the middle support bracket are loose.

5. When the car is running at low speed, the transmission shaft has a clear and rhythmic metal impact sound, and there is a clear sound when the car is out of gear and sliding. The pressure on the bearing shell of the multi-purpose joint is too high, so that the bearing cannot rotate flexibly.

6. When the car is running, the sound of the transmission shaft increases with the increase of speed, and the middle support bearing makes a dull and continuous turbid sound, indicating that the middle support bearing is loose due to excessive wear.

The transmission shaft makes a continuous "whining" sound. First, check whether the fastening bolts of the middle support bearing support rubber pad ring jacket are too tight or too loose, which makes the bearing support position deflected. The tightness of the bearing cover bolts can be adjusted to eliminate abnormal noise faults. If there is still noise after adjusting the bearing preload, check the lubrication of the bearing. If the bearing is poorly lubricated, the bearing should be disassembled and cleaned, and the composite bearing and bracket should be installed after filling with grease.

Use and maintenance of drive shaft

In order to ensure the normal operation of the transmission shaft,

To prolong its service life, attention should be paid to:

1. It is strictly forbidden for cars to start at high speed.

2. It is strictly forbidden to lift the clutch pedal suddenly.

3. Car overloading and speeding are strictly prohibited.

4. The working condition of the transmission shaft should be checked frequently.

5. Always check the fastening of the transmission shaft hanger, whether the supporting rubber is damaged, whether the connection parts of the transmission shaft are loose, and whether the transmission shaft is deformed.

6. In order to ensure the dynamic balance of the transmission shaft, always pay attention to whether the balance soldering piece is desoldered. Supplied with new drive shaft assembly. When loading a new drive shaft, pay attention to the assembly marks on the telescopic sleeve and make sure that the flange forks are in one plane. When repairing and disassembling the transmission shaft, the assembly mark should be printed on the telescopic sleeve and the flange shaft to keep the original assembly relationship unchanged.

7. Grease should be added to the universal joint cross bearing frequently. In summer, it should be injected with No. 3 lithium-based grease, and in winter, it should be injected with No. 2 lithium-based grease.