From: tedcrum_at_garnet.berkeley.edu (Ted Crum)
Date: Wed, 4 Oct 1995 09:50:23 -0700 (PDT)
Subject: "Fluid Block"
The idler arm bushing on the E12 and E28 cars is called a fluid block by
BMW because it contains a compact viscous (hydraulic) *steering damper*.
It's worth looking at if you have steering vibration. The idler arm, with
tie rods removed, should exhibit a smooth, strong resistance to quick
rotation. Have a machine shop press in the new part, and warn them to be
careful to push only against the outer sleeve.
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1980 528i (new f.b.)