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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 06-12-2015, 09:40 PM
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AJR1982 AJR1982 is online now
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Hydraulic pulley removal question.

So I've read the DIY's to assist on the pulley/ belt removal.

My question is pertaining to the Hydraulic style pulley shown below. In the mechanical pulley the arrow points to the raised socket, which you move CW to loosen the pulley and remove the belt. On the hydraulic pulley it is recessed and has a bolt in the same area. Is this the bolt I am supposed to turn CW to loosen and remove the belt, then CCW to remove the bolt?

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Last edited by AJR1982; 06-12-2015 at 09:42 PM.
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Old 06-13-2015, 11:46 AM
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AJR1982 AJR1982 is online now
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This is for the 3.0 if it makes any difference
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Old 06-13-2015, 12:10 PM
ca2014mp2 ca2014mp2 is online now
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Look here.. www.realoem.com you can lookup your type of car and look under engine and you'll see what they are...
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Series E39 Vehicle code DP63 Model 528ITA Engine M52TU
Body type OTHER Catalog model USA Production date 1999 / 06
Transmission Automatic Steering Left Catalyzer YES

Production FROM : 1998/09/01 TO : 1999/08/31

Last edited by ca2014mp2; 06-13-2015 at 12:43 PM.
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Old 06-13-2015, 01:31 PM
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AJR1982 AJR1982 is online now
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Quote:
Originally Posted by ca2014mp2 View Post
Look here.. www.realoem.com you can lookup your type of car and look under engine and you'll see what they are...
Thank you for reading my post and replying, however RealOEM does will not say which pulley system you have. I have however done my 3 minute study and my car has a Mechanical AC pulley and a Hydraulic Alternator pulley.

The picture that I posted above is of the two different styles. I have removed the A/C belt and mechanical pulley but I have not been able to find information on removing a hydraulic pulley.
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Old 06-13-2015, 06:35 PM
pleiades pleiades is offline
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Quote:
Originally Posted by AJR1982 View Post
Thank you for reading my post and replying, however RealOEM does will not say which pulley system you have. I have however done my 3 minute study and my car has a Mechanical AC pulley and a Hydraulic Alternator pulley.

The picture that I posted above is of the two different styles. I have removed the A/C belt and mechanical pulley but I have not been able to find information on removing a hydraulic pulley.
To de-tension the main belt, pop the plastic cap on the tensioner pulley, insert the correct type/size tool bit into the pulley spindle bolt (might be allen, or might be torx), and turn CW.
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Old 06-14-2015, 12:45 PM
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Thank you. Just in time.
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Old 06-14-2015, 01:49 PM
cn90 cn90 is offline
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Use 8-mm Hex (Allen) socket.
Make sure the socket is all the way inside the bolt to prevent stripping.
CCW to undo the bolt.
Do NOT forget the washer on the backside of the pulley during install!!!
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Old 06-14-2015, 05:50 PM
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bluebee bluebee is offline
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Quote:
Originally Posted by pleiades View Post
To de-tension the main belt, pop the plastic cap on the tensioner pulley, insert the correct type/size tool bit into the pulley spindle bolt (might be allen, or might be torx), and turn CW.
Quote:
Originally Posted by cn90 View Post
Use 8-mm Hex (Allen) socket.
Make sure the socket is all the way inside the bolt to prevent stripping.
CCW to undo the bolt.
Do NOT forget the washer on the backside of the pulley during install!!!
This is good information to cross reference to one of these threads ...
- How to tell if you have mechanical or hydraulic belt tensioners (1) & how to switch from mechanical to hydraulic (1) and what is the difference between the two types (1) (2) & how to rebuild your hydraulic tensioners (1)
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Please read the suggested threads, where the best always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
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