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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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Old 10-01-2012, 01:13 PM
zac190 zac190 is offline
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Location: Hurst
Join Date: Sep 2012
Posts: 46
Mein Auto: 1998 BMW 528i

I have a 1998 bmw 528I and my mechanic told me I need to replace my alternater soon, I was wondering if anyone has a write up for a diy or should I just pay him to do it? I can't search the forums via phone app so I'd appreciate it for the help!
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Old 10-01-2012, 01:42 PM
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BentValve BentValve is offline
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Location: NH
Join Date: Sep 2010
Posts: 1,054
Mein Auto: 00 528i 3 pedals
Disconnect battery
Remove fan
Move shroud out of the way
Remove belt
Disconnect alternator
Remove idler pulley
Remove lower mounting bolt

In a the top of my head.
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Old 10-01-2012, 04:01 PM
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540 M-Sport 540 M-Sport is offline
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Location: Seattle, WA
Join Date: Apr 2004
Posts: 6,031
Mein Auto: 01' 540 M-Sport, Scuderia
One way to save some significant $$ is to ask your mechanic if you can provide the part. They shop on line for a quality rebuilt from a reputable online seller. You could easily save yourself $300 or more.
540 M-Sport package (Canadian market), factory Bluetooth phone integration, factory M-Audio 10" dual voice coil subs, Homelink, M5 rear stabilizer bar, M5 rear subframe braces, H&R 15mm wheel spacers, ST X (KW) coilovers, Stop Tech ss brake lines, Akebono Euro Ceramic brake pads, oem Brembo and Zimmerman rotors, Dinan Stage 1 software, Strong Strut front upper stress bar, BMP strut tower reinforcement kit, USA Spec Ipod/Iphone integration.
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Old 10-02-2012, 05:46 AM
Thirty9er Thirty9er is offline
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Location: Launceston, Tasmania
Join Date: Jul 2012
Posts: 3
Mein Auto: 1998 E39
I had same advise from BMW dealer, shopped online brought a new one only to find that the old one just needed new bushes, $100 to fix, waste of $AU400.00 for new one
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Old 10-02-2012, 05:55 AM
JimLev JimLev is offline
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Location: Sundance Mesa, NM
Join Date: Dec 2003
Posts: 4,319
Mein Auto: 540/6, '16 Highlander XLE
Cn90 has posts showing alternator bearing and brush replacement. If you can remove your alternator you should be able to rebuild it. It's really not that hard.

2000 540/6 Slightly tweeked...everywhere
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