How to quickly overhaul the Mercedes S350L air suspension shock?
Model: Mercedes-Benz S350L (221)
Total miles driven: 271,029
Fault description: According to the customer's description, the right front wheel of the vehicle collapsed, affecting the driving; The dashboard chassis lifting fault light is lit, as shown in the picture below:
Fault performance: From the appearance of the vehicle, the height of the right front wheel is obviously inconsistent with that of the left front wheel.
Fault diagnosis: According to the diagnostic instrument testing system, the suspension system has the fault of overcharging time.
Maintenance and investigation
Combined with the owner's feedback and the tilt of the body, the detection process is as follows:
1. Manually activate the chassis lifting of the vehicle to make the air pump work to inflate the air spring of each wheel;
2. Observe the air spring inflation of each wheel;
3. The right front wheel is found to have obvious air leakage sound;
4. Remove the right front air shock absorber for pressure leakage test;
It was detected that the right front shock absorber skin was damaged and leaked, as shown in the figure below:
Maintenance plan:
Because the right front shock absorber is damaged and leaking, it needs to be replaced.
After the right front shock absorber is installed, the fault code is cleared for test run. After the test run, the system runs normally after replacement, and there are no other fault points. The fault is removed.
Later call the customer to inquire, the vehicle did not appear abnormal.
Fault summary: Air shock absorber skin leakage is a common fault, and the fault phenomenon is single wheel collapse and instrument failure light on. The repair plan is to replace the leather bag or shock absorber assembly.
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