The struts have mountings at both ends that can cause clunking sounds over light undulations. There is really very little overlap of job operations. The air cell replacement doesn't require removing the struts and the system self bleeds.

Replace the cells and if their demise has beat out any of the rest of the system evaluate it after the system works again.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician