Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X3 E83 (2004 - 2010)

X3 E83 (2004 - 2010)
Talk about the E83 BMW X3 in this forum!

Reply
 
Thread Tools Display Modes
  #1  
Old 07-15-2010, 06:31 PM
knight4825 knight4825 is offline
Registered User
Location: MA
 
Join Date: Dec 2008
Posts: 37
Mein Auto: 2004 BMW X3
Tensioner and Idler Pulley

I need to replace my tensioner pulley this Sunday, but I also thought I should also do the the idler pulley at the same time. Any advice on either or video? thanks for your help !!
Reply With Quote
Advertisement
  #2  
Old 07-15-2010, 06:48 PM
mps mps is offline
Registered User
Location: Atlanta, GA
 
Join Date: Mar 2009
Posts: 6
Mein Auto: 2002 325ci
I would lookup the process for E46, should be 90% same (I guess).. Again, I'm not a pro..
Reply With Quote
  #3  
Old 07-15-2010, 08:19 PM
Supercourse Supercourse is offline
Officially Welcomed to the 'Fest
Location: British Columbia, Canada
 
Join Date: Feb 2008
Posts: 3,881
Mein Auto: 2004 X3 2.5i
Not sure which belt you are referring to -

the main serpentine belt for the water pump, alternator and power steering pump, or,
the A/C one.

If the tensioner on the main serpentine belt, see the FAQ and DIY sticky thread (the last post, that I recently added).

I saw no need to replace the idler/deflection pulley.
The known problem is the pulley on the INA brand tensioners. Not limited to BMW's -check out:

http://www.torontomazda3.ca/forum/sh...y-disintegrate

At least on an X3 it is much easier and cheaper to replace than on a Mazda 3!
Reply With Quote
  #4  
Old 07-15-2010, 08:29 PM
knight4825 knight4825 is offline
Registered User
Location: MA
 
Join Date: Dec 2008
Posts: 37
Mein Auto: 2004 BMW X3
I am talking about the main engine belt, but there is a tensioner pulley and the idler pulley. Should I replace them both while I am in there?
Reply With Quote
  #5  
Old 07-15-2010, 08:42 PM
Supercourse Supercourse is offline
Officially Welcomed to the 'Fest
Location: British Columbia, Canada
 
Join Date: Feb 2008
Posts: 3,881
Mein Auto: 2004 X3 2.5i
If you have a lot of miles on your 2004 it might be a good plan - but in my case there seemed to be no need.

I assume yours still has the original mechanical tensioner.
For some reason, a replacement pulley was never available for this, just a complete tensioner with attached pulley.

The newer hydraulic tensioner has a replaceable pulley - in fact the tensioner comes without one, and you have to order it by separate part no.,
along with some other bits and pieces.

Maybe you had already been upgraded to a hydraulic tensioner, and you now need to fit a new pulley on it?
In which case my instructions would not be of much help.
Reply With Quote
  #6  
Old 07-16-2010, 06:52 PM
knight4825 knight4825 is offline
Registered User
Location: MA
 
Join Date: Dec 2008
Posts: 37
Mein Auto: 2004 BMW X3
I still have the mechanical tensioner and I was just going to replace it with another mechanical one for the sake of time.
Reply With Quote
  #7  
Old 07-19-2010, 02:19 PM
Supercourse Supercourse is offline
Officially Welcomed to the 'Fest
Location: British Columbia, Canada
 
Join Date: Feb 2008
Posts: 3,881
Mein Auto: 2004 X3 2.5i
How did it go?

Hope you found it as easy a job as I did.
Reply With Quote
  #8  
Old 07-20-2010, 05:21 PM
Sparkjl Sparkjl is offline
Registered User
Location: Indianapolis, Indiana
 
Join Date: Jul 2008
Posts: 9
Mein Auto: 2004 325 CIC
Any videos for how to replace the tensioner?

I have never worked on my 2004 325CI before but I am hoping this is an easy or inexpensive fix.

Dreyer and Reinbold have Indy on lockdown and I cannot afford to pay the $$$ that I am sure they will want.

Right now I have an expensive lawn ornament out front and I would love to get it fixed.

Thoughts?

TIA
Reply With Quote
  #9  
Old 07-20-2010, 05:47 PM
Sparkjl Sparkjl is offline
Registered User
Location: Indianapolis, Indiana
 
Join Date: Jul 2008
Posts: 9
Mein Auto: 2004 325 CIC
Well I found a ton of videos but now the question is what size/type of idler and tensioner pulley do I get?

I found a few sites selling what I need at very reasonable prices, but it seems the sizes very slightly.

I have inline 6 cyl.
2004 325ci
Reply With Quote
  #10  
Old 07-21-2010, 04:36 PM
knight4825 knight4825 is offline
Registered User
Location: MA
 
Join Date: Dec 2008
Posts: 37
Mein Auto: 2004 BMW X3
I replaced the mechanical tensioner on Sunday. It went pretty well, very easy. The only snag that I ran into was that I didn't take out the radiator fan and had some clearance issues with the rachet, but was able to get around it. You don't need to take the fan off, would make install alot easier but I didn't and it worked out. The other thing is that you have to pop off the dust covers on both the AC tensioner pulley and the main engine tensioner pulley that I was installing. Because the AC belt is in front you have to take off that belt first. Let me know if you have any other questions.
Reply With Quote
  #11  
Old 08-02-2010, 03:50 PM
Sparkjl Sparkjl is offline
Registered User
Location: Indianapolis, Indiana
 
Join Date: Jul 2008
Posts: 9
Mein Auto: 2004 325 CIC
We ran into the same issue with not taking the fan off... Little space..


Went ahead and bought the wrench and took the fan off while troubleshooting another repair and I tell you what it really made things alot easier :-)
Reply With Quote
  #12  
Old 10-19-2010, 06:54 PM
geekminer geekminer is offline
Registered User
Location: Chicago
 
Join Date: Sep 2010
Posts: 15
Mein Auto: 2004 x3 2.5
me too

I just replaced main tensioner and both belts. Very tight quarters but I got the job done and no more rattle. Right at $100 including 3 day Fedex. I followed the diy write up - worked like a charm. My only advice - take picture of belts BEFORE taking apart. My memory failed me - took longer to figure out how to put belts on than it took to replace tensioner.
Reply With Quote
  #13  
Old 10-22-2010, 02:01 PM
shendrick shendrick is offline
Officially Welcomed to the 'Fest
Location: Near Boston MA
 
Join Date: Sep 2010
Posts: 129
Mein Auto: 08 M3, 05 e46 zhp, 07 X3
You can also get a diagram of the belt path off RealOEM at any time.
Reply With Quote
  #14  
Old 10-27-2010, 06:10 PM
geekminer geekminer is offline
Registered User
Location: Chicago
 
Join Date: Sep 2010
Posts: 15
Mein Auto: 2004 x3 2.5
That's what I used - had laptop in garage and my son & I looked at picture. Needed an extra hand to run belt through all the loops and to ensure it was seated properly. Thanks for info.
Reply With Quote
  #15  
Old 01-06-2017, 04:04 PM
Salzar Salzar is offline
Registered User
Location: United States
 
Join Date: Sep 2016
Posts: 24
Mein Auto: 04 X3
What tools used

I am getting ready to do the same thing in my 04 x3 and am worried I wont have the necessary tools. I felt my fan and although it is an automatic I don't feel any bolt holding it to the shroud so I don't mean the two tools to get the fan out but the ones to loosen tension and remove the pullys. Can anyone tell me what size and what tools I will need so I can be sure I have them before I start?
Reply With Quote
  #16  
Old 01-06-2017, 04:09 PM
Salzar Salzar is offline
Registered User
Location: United States
 
Join Date: Sep 2016
Posts: 24
Mein Auto: 04 X3
Tensioner in center?!?!

Okay I am getting mixed videos here and can't seem to find one specific to my vehicle. I am wondering if the tensioner is in the center of the pulley and not off to the side of it? AND if that is the case then how do you remove the actual pully its self? Is it like one direction for tension one direction to remove or a little turn for tension and a few big turns to remove. Help?
Reply With Quote
  #17  
Old 01-07-2017, 08:24 AM
abscate abscate is offline
Officially Welcomed to the 'Fest
Location: NYC
 
Join Date: May 2014
Posts: 560
Mein Auto: 2006 BMW X3... VOLVO... V
The M54 tensioner has either a TOrx or a 17mm boss for taking off the tension. Mine has both, so choose your poison.

The tensioner attaches with M10 bolts to the engine
Reply With Quote
  #18  
Old 01-15-2017, 11:35 PM
Salzar Salzar is offline
Registered User
Location: United States
 
Join Date: Sep 2016
Posts: 24
Mein Auto: 04 X3
Tools Needed For The E83

I have an x3 and need to know what sockets or bits I will need for tension and removing the pully.
Reply With Quote
  #19  
Old 01-16-2017, 07:39 AM
Supercourse Supercourse is offline
Officially Welcomed to the 'Fest
Location: British Columbia, Canada
 
Join Date: Feb 2008
Posts: 3,881
Mein Auto: 2004 X3 2.5i
Depends on whether your 2004 has ever been converted from mechanical tensioners to hydraulic ones (if original owner ever complained under warranty about noise they would replace with hydraulic ones).

And also depends on which tensioner and pulley you are doing (A/C, idler/deflection or main P/S/alternator/water pump) and if you are doing the whole tensioner/assembly or just the pulley.

So no definitive answer, but you will probably need:

T27 bit for removing plastic shroud

10mm., 13mm., and 16mm. standard sockets

T45 and/or T50 (for pulley center fastener)
Reply With Quote
Reply

See More Related BMW Stories


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X3 E83 (2004 - 2010)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 03:16 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms