E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > Alternator Install for N52



Reply
 
Thread Tools Search this Thread
      12-18-2016, 10:32 AM   #1
Efthreeoh
Major General
United_States
1400
Rep
7,820
Posts

Drives: E90 & Z4 Coupe
Join Date: May 2012
Location: MARLAND

iTrader: (0)

Alternator Install for N52

I didn't see a DIY for installing a new alternator in the E90. This is a DIY for removal and replacement of the Alternator for the E9X with the N52 engine. Attached is the procedure I followed for the N52.

The alternator for the N52 is the 185 Amp version.

If your alternator dies you'll know it by the red battery indicator symbol that comes up on the gauge cluster. The battery doesn't last long once the alternator dies. I got home when my alternator died with just about 25 miles of battery life. I did have my headlights and wipers in use.

This DIY is for experienced home mechanics with a decent set of quality tools. You’ll need a BMW scan tool to clear them before restarting the engine so they will not be stored in the ECU and found the next time the ECU is scanned.

DIY updated to correct idler pulley bolt torque value.
Attached Images
File Type: pdf N52 Alternator DIY(1).pdf (371.3 KB, 63 views)
__________________
A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission.

Last edited by Efthreeoh; 12-20-2016 at 06:51 AM. Reason: correct torque values
Appreciate 1
      12-19-2016, 09:20 PM   #2
PhaseP
Captain
109
Rep
959
Posts

Drives: 325XI
Join Date: May 2010
Location: Earth

iTrader: (0)

Nice DIY.

Just a correction, the torque spec on alternator idler pulley bolt got reduced to 30 ftlbs later on:

https://wiki.bentleypublishers.com/d...que+correction
Appreciate 0
      12-20-2016, 06:52 AM   #3
Efthreeoh
Major General
United_States
1400
Rep
7,820
Posts

Drives: E90 & Z4 Coupe
Join Date: May 2012
Location: MARLAND

iTrader: (0)

Quote:
Originally Posted by PhaseP View Post
Nice DIY.

Just a correction, the torque spec on alternator idler pulley bolt got reduced to 30 ftlbs later on:

https://wiki.bentleypublishers.com/d...que+correction
Thanks. I corrected the DIY. Funny, when I was torquing the bolt 59 seemed a bit excessive.
__________________
A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission.
Appreciate 0
      12-29-2016, 04:20 AM   #4
tlow98
Captain
124
Rep
939
Posts

Drives: 2009 E91
Join Date: Aug 2011
Location: United States

iTrader: (1)

Nice!
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Forum Jump


All times are GMT -4. The time now is 11:07 AM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST