Common fault types and diagnosis of cleaning vehicle drive axle

Common fault types and diagnosis of cleaning vehicle drive axle
The cleaning vehicle drive axle is a key component to ensure the normal operation of the vehicle. Its stability and reliability are crucial to the efficiency of cleaning operations. The following are several common fault types and diagnosis methods of cleaning vehicle drive axles:

1. Drive axle overheating
Drive axle overheating is one of the most common faults, usually manifested as abnormally high temperature in the middle of the drive axle. Causes of overheating may include:

Insufficient, deteriorated or non-compliant gear oil
Bearing assembly is too tight
Gear meshing clearance is too small
Oil seal is too tight
Thrust washer and the back clearance of the driven gear of the main reducer are too small

2. Oil leakage of the drive axle
Oil leakage is another common problem of the drive axle, which may be caused by the following reasons:

Loose oil plug of the oil filling port or oil drain port
Oil seal is damaged or the oil seal is not coaxial with the shaft diameter
Oil seal shaft diameter has grooves due to wear
The flatness error of each joint plane is too large or the sealing gasket is damaged
The tightening method of the fastening screws of the two joint planes does not meet the requirements or is loose
The vent is blocked
The axle housing has casting defects or cracks

3. Abnormal noise of the drive axle
Abnormal noise is usually caused by the following reasons:

The gear meshing clearance is too large or uneven, resulting in unstable transmission
Incorrect meshing of the driving and driven bevel gears, tooth surface damage or broken gear teeth
The supporting cone bearing of the driving bevel gear is worn and loose
The connecting bolts of the driven bevel gear are loose, and the gear lubricating oil is insufficient

4. Early damage to the drive axle
Early damage may include early wear of the gear pair, broken gear teeth, early damage to the driving gear bearing, etc. These damages may be caused by:

Gear meshing clearance is too large or too small
Bearing preload is too large or too small
Gear oil is not added as required
Driven gear is offset due to loosening of the locking adjustment nut

5. Noise, heat, and oil leakage in the drive axle
These symptoms may be related to the following factors:

Insufficient lubricating oil or use of inferior gear oil
Bearing assembly is too tight and the clearance is too small

Conclusion
Understanding these common types of drive axle failures and their causes is essential for timely diagnosis and repair of the cleaning vehicle drive axle. Regular inspection and maintenance can significantly extend the service life of the drive axle and ensure the continuity and efficiency of cleaning operations. Proper maintenance measures include regular inspection of the amount and quality of lubricating oil, ensuring the tightening of fasteners, and timely replacement of worn parts. Through these methods, the failure of the cleaning vehicle drive axle can be minimized and the vehicle’s optimal performance can be maintained.

If the drive axle is leaking oil, how should I fix it safely?

If your cleaning car drive axle has an oil leak problem, here are some safe and effective repair steps:

1. Determine the location of the oil leak
First, you need to determine the specific location of the oil leak. The oil leak may occur in multiple parts of the drive axle, including the driving gear flange nut, the bearing seat and the bridge housing joint surface, the wheel side half shaft oil seal, etc.

2. Check the oil seal
The oil leak may be caused by wear, damage or improper installation of the oil seal. Check whether the oil seal is worn or damaged, and replace the oil seal if necessary

3. Check the bolt tightness
Check whether the fixing bolts are tight. Untightened bolts may cause low sealing of the drive axle, causing oil leakage. Make sure all bolts meet the preload requirements

4. Check the vent
Clogged vents may also cause oil leaks. Clean or replace the vent hose to ensure it is unobstructed

5. Replace the gasket
If the gasket fails, you need to replace a new gasket to ensure the sealing of the drive axle

6. Adjust the gear oil amount
Overfilling the gear oil may also cause oil leaks. Check the gear oil level and fill the gear oil to the standard oil level as required

7. Check the wheel hub oil seal
Damage to the outer and inner oil seals of the wheel hub can also cause oil leakage. Check the condition of the oil seal and replace it if necessary

8. Bolt tightening torque
According to the material of the parts, the number of mounting holes, the thread specifications, and the bolt accuracy level, a reasonable tightening torque is calculated

9. Safety precautions
During the disassembly and assembly process, pay attention to the gentle handling of parts to avoid secondary contamination of lubricating oil and ensure personal safety during the maintenance process

10. Professional maintenance
If you are not sure how to perform the maintenance or lack relevant experience, it is recommended to contact professional maintenance personnel for inspection and repair to ensure safety and repair quality.

Following the above steps, you can safely repair the oil leakage problem of the drive axle of the cleaning car and ensure the normal operation and safe operation of the vehicle.

What details should be paid attention to when replacing the oil seal?

When replacing the oil seal, you need to pay attention to the following details to ensure correct installation and avoid potential problems:

Choose the right oil seal: The specifications and models of the oil seal must match the original car’s oil seal, otherwise it may cause poor sealing or installation difficulties

Clean operating environment: The operating environment for replacing the oil seal should be kept clean to prevent dust, impurities, etc. from entering the cylinder

Moderate installation force: When installing the oil seal, use appropriate force to avoid excessive force that may cause deformation or damage to the oil seal

Check the installation position of the oil seal: After installation, carefully check whether the installation position of the oil seal is correct and ensure that the lip of the oil seal fits well with the contact surface of the cylinder

Avoid oil seal contamination: Before installation, make sure there are no defects or deformations on the oil seal, such as cracks, tears or wear. Small scratches on the outer diameter may cause the seal to leak

Evaluate the shaft and hole: Confirm that there is no wear or residue. The surface that the oil seal contacts should be smooth, clean, and free of sharp edges or burrs. Any minor damage to the shaft or bore can cause the oil seal to leak or fail prematurely

Lubricate the oil seal, shaft, and bore: Lubricate the oil seal, shaft, and bore before installation. This will help the oil seal slide into place and protect the seal lip during initial operation. Use a compatible lubricant that will not damage the rubber material of the oil seal

Use the correct installation tools and methods: It is recommended to use special tools, such as a bearing installation tool set or a spring expansion tool, to facilitate the correct alignment and installation of the oil seal. Avoid using a hammer or screwdriver that may damage or deform the oil seal. Apply even pressure to the oil seal until it is fully seated in the bore

Make sure the oil seal is facing the correct direction: The spring side of the oil seal should always face the side of the sealed medium, not outward. The oil seal should also be perpendicular to the axis of the shaft and should not be tilted or tilted

Inspect the oil seal after installation: Make sure there is no gap or leakage between the oil seal and the shaft or bore. Also, make sure the oil seal does not twist or roll in dynamic applications

Avoid reusing oil seals: do not use disassembled oil seals any more, always replace with new ones

Clean assembly holes: clean the outer ring of the oil seal and the housing oil seal seat hole when reassembling

By following these precautions, you can ensure the correct installation of the oil seal and maximize its performance and service life. If you are not confident in the replacement process, it is recommended to seek help from a professional technician.