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Question:

1992 bmw 525 wagon.rear hydrolic suspension.?

rear suspension is down (won‘t pump up).left rear shock does have a leak by figured it would try to pump up anyway.what are the most common issues with this set up?

Answer:

The system is a complex one comprised of the level sensor, pump/accumulator,regulating valve, hydraulic shocks, pipes/tubes, and supply of atf fluid from the front steering reservoir. Off course, there is a fuse/relay to consider too. Common sense tells you that you have to check for proper fluid level, eliminate leaks, and check that the fuse and relay are OK. Otherwise, this is not a DIY affair.
Im afraid unless its a pneumatic suspension and rides on air cushions U will have to get new shocks.

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