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Old 10-26-2012, 08:25 PM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
Join Date: Mar 2008
Posts: 25,236
Mein Auto: 02 BMW 525i M54 auto 130K
Originally Posted by MatWiz View Post
closeup picture of the black piece ribs, to clearly show the ribs
Hi Dan,

Here are closeups of the ribbed post. (I'd be glad to snap any photo at any angle you need. Just ask. You're helping me. And the next person. And the next after that.)

It seems to me, as it appears to you, that this mechanism is the missing link.

What puzzles me is why have an 'adjustable' post - when - I've never seen any mention of anyone actually adjusting it?

The post really only 'locks' into place into the motor tube. While it 'can' be pushed down a few notches or pulled up a few notches, it's meant to stay in place once configured.

Since it can be locked in any position ... an understanding of what's different when it's all the way in versus all the way out is key to understanding these window regulators.

My gut feeling is that the post "is" the tensioning mechanism, somehow ... but I'm not exactly sure how. Either that, or it's just for assembly purposes.

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Please read the suggested threads and add value, either by pictures or by descriptions, so the next person stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need

Last edited by bluebee; 10-26-2012 at 08:29 PM.
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