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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 10-16-2011, 05:36 PM
richardcoelho richardcoelho is offline
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Mein Auto: 2001 BMW 540i M sport
Quick question please!!!

My 2001 540i's alternator just died, already got a new one, but im trying to remove the old one but there is the tensioner in the way,it seems to have two pulleys in the way, i removed the one with the T50 torx bit but there is another plastic pulley that sits a few millimeters infront of the alternator, how can i get this out of the way to slide the alternator out? thanks guys i need the help asap!!!!
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  #2  
Old 10-16-2011, 05:43 PM
pleiades pleiades is offline
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Mein Auto: '99 528i, M52TU w/stick
Does this help?

http://tis.spaghetticoder.org/s/view.pl?1/00/13/25

Look about halfway down the page for the water-cooled alt removal procedure.
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  #3  
Old 10-16-2011, 05:50 PM
richardcoelho richardcoelho is offline
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Quote:
Originally Posted by pleiades View Post
Does this help?

http://tis.spaghetticoder.org/s/view.pl?1/00/13/25

Look about halfway down the page for the water-cooled alt removal procedure.
i looked at the photo and the pulley thats in the way is labeled #4 and it says there is a screw on it,but i cant see if there is, or what type?
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  #4  
Old 10-16-2011, 06:02 PM
JimLev JimLev is offline
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Mein Auto: 540/6, S60 Volvo, Tribeca
Why don't you just remove the whole idler pulley assy?
Each idler should have a plastic center cap which you can pop off to expose the center bolt.
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  #5  
Old 10-16-2011, 06:06 PM
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bluebee bluebee is offline
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Mein Auto: 02 BMW 525i M54 auto 130K
Quote:
Originally Posted by pleiades View Post
Doing a quick /alternator F3, I see these in the bestlinks ...
- BlackBMWs 540it alternator replacement
- BMW TIS - 12 31 020 Removing and installing/replacing alternator (M60, M62)
- How to Replace Alternator in a 99, 00, 01 740il
etc.

To the OP ... please let us know if these help so that we can more reliably help others ...

Also, when you perform the task following these DIYs (or others), let us know what is needed to improve those DIYs so others don't have the same problems you are experiencing.

It's the way we operate here ...

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Last edited by bluebee; 10-16-2011 at 06:09 PM.
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  #6  
Old 10-16-2011, 10:12 PM
richardcoelho richardcoelho is offline
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ok guys i think it may have a cap on it, so ill check tomorrow, and the links are very helpful,just didnt know about the cap
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  #7  
Old 10-24-2011, 10:32 PM
richardcoelho richardcoelho is offline
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thanks for the help guys,the alternator was changed, and the light went of
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  #8  
Old 03-15-2013, 06:09 PM
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bluebee bluebee is offline
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Location: San Jose, California
 
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Mein Auto: 02 BMW 525i M54 auto 130K
Quote:
Originally Posted by richardcoelho View Post
thanks for the help guys,the alternator was changed, and the light went of
It would be nice if everyone added to the information each time they performed a repair, even if all they did was list lessons learned or snap a picture of the harder-to-understand parts.

Looking at the record, BlackBMW seems to have the best diy to start with; it's on another forum, so it would be nice to improve upon it here.

The goal is for those using this to snap a picture or two to improve upon the harder parts.

See also:
- How to test your generator (1) & how to determine exactly what alternator you have (1) & a DIY for replacing the E39 I6 alternator (1) (2) (3) (4) (5) or E39 V8 alternator (1) (2) (3) & why you want to clean out the air-cooled alternator air duct & cooling vents (1) (2) (1) (2) & why rebuilding an alternator is preferable to replacing (1) & cn90 DIYs for rebuilding a 1998 air-cooled BMW Bosch alternator (1) (2) or his VW Bosch alternator (1) & cdawg246's quest for materials for a Bosch water cooled alternator rebuild (1) & Aioros' 1999 Valeo Alternator rebuild DIY (1) and his quest for materials (1) & Cn90's explanation of where to get hard-to-get alternator rebuild parts (1) & how to tell from the part number if a replacement alternator is actually rebuilt "by" Bosch (1) & a DIY for replacing the brushes in an (Audi) Valeo alternator (1) & a Bosch alternator bearing replacement from a 1997 MB S600 (1) & from a Range Rover (1).
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File Type: pdf BMW_E39_540i_alternator_replacement_DIY_2of2.pdf (5.65 MB, 52 views)
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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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  #9  
Old 04-28-2013, 08:09 AM
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bluebee bluebee is offline
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Mein Auto: 02 BMW 525i M54 auto 130K
Another quick question for a V8 alternator DIY was asked over here today:
Quote:
Originally Posted by besonet540 View Post
Taking out the alternator on a 99 540i, I've already taken off all the bolts and nuts on the housing and I still need to do the idle pulley tensioners to create space to pull it out, my question is, does the fan have to be removed in order to take out the alternator which it looks like? If so, how do you keep the crank from moving when you wrench on the larger reverse threaded nut directly behind the fan? I've tried the tap on it with a with a mallet but the crank always moves, any suggestions, threads would be appreciated.
Thanks
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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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