1. Deformed Air Springs
Problem and Cause:
1. improper storage
2. improper transport
3. improper handling
Solution:
1. storage according to ISO 5285 no daylight, dry, at normal room temperature
2. avoid improper transport
3. avoid improper handling
2. Damage of the conical beads and cuts
Problem and Cause:
1. improperly mounted bead plate
2. pinching of the bellows with metal parts
Solution:
1. keep conical beads clean and corrosion free
2. avoid driving without pressure in the air suspension
3. Bellows rubs off at shoulder
Problem and Cause:
1. bead plate diameter incorrect
2. bellows too long for application
Solution:
1. make sure to use original parts
2. avoid wrong cross references
4. Broken off thread bolts
Problem and Cause:
1. excessive torque
2. use of oils or lubricants
Solution:
1. don’t exceed recommended torque according to your maintenance manual
2. avoid usage of oils or lubricants
5. Overextension
Problem and Cause:
1. spring travel not restricted
2. incorrectly adjusted level control
3. air spring not suitable for application
Solution:
1. check the shock absorbers
2. check and adjust level control valve
3. double check if the air spring fits the OE part number
6. Abrasion
Problem and Cause:
1. Bellows contact with chassis parts
2. Bellows contact with foreign bodies
Solution:
1. double check if the air spring fits the OE part number
2. check regularly and remove foreign objects stuck between bellows and piston
7. Chemical contamination
Problem and Cause:
usage of oils or lubricants
Solution:
1. avoid usage of lubricants or cleaners which contain mineral oils
2. check air springs on a regular basis
8. Air Spring bursting, broken piston
Problem and Cause:
1. overload
2. exceeding the maximum allowable pressure
Solution:
never exceed the maximal allowed weight of the vehicle