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My Bentley does not show it used as a drain, my guess is that it is a set screw to hold some internals in a certain position. My $0.02 worth. I would leave it alone or ask on the e23 board at BB which is more active.
My Bentley does not show it used as a drain, my
Allen screw on bottom of power steering pump What is the allen screw for on the bottom of the power steering pump? Is it a drain? Does it tighten anything? TIA Rick '87 535is, 5spd, 303K
Allen screw on bottom of power steering pump
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