E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 08-10-2012, 03:02 PM   #21
rbalazsi
Registered User
 
Join Date: Sep 2010
Location: AZ
Posts: 227
My Ride: 323iT, 330Cic
I know I've had this discussion before...

Oh yes...
Hydraulic tensioner thread

And from when I'd just finished changing my belts before posting in that thread, yes, you'll have to look as it doesn't appear this is a hard and fast rule on which bolt was used.

T-50 or 8mm hex...

You'll have to look to see if the bolt is 8mm or T-50 torx. My 03 vert had an 8mm hex bolt, my 00 wagon had a T-50. I ordered another bolt based on part # from realoem for my vert and it came as a T-50.

I don't see any real advantage to either as long as you use the right tool for detensioning.
rbalazsi is offline   Reply With Quote
Old 08-10-2012, 03:32 PM   #22
dmax
Registered User
 
dmax's Avatar
 
Join Date: Aug 2006
Location: NJ
Posts: 22,837
My Ride: '99 328i 1.04646 mu
Quote:
Originally Posted by tomoyer View Post
That indeed is a torx fastner, however, it was only used on the AC belt tensioner pulley and not on the serpentine belt tension pulley. If you have a torx bolt on the serpentine belt tension pulley, not sure how it got there. At any rate, torx or allen, to remove tension to remove the belt is turning CLOCKWISE.
Tom,

As mentioned, bmw seemed to use both. Both mine are t-50s...I swear! But again, over the years, many of our cars might have HD bolts in there now.

OP, I use my 14" 1/2" breaker bar to detension and it works great. If you're using a shorter handle, I could see it giving you a workout.
__________________


Performing at the Comedy Cove--595 Morris Ave. Springfield NJ reservations 973 376-3840

A recent set

dmax on the radio every Wednesday 7-9 p.m. NYC time. Call in! (661) 449-9340 watsonnwatson.com
dmax is offline   Reply With Quote
Old 08-10-2012, 03:50 PM   #23
tomoyer
Registered User
 
Join Date: Aug 2011
Location: Reading, Pennsylvania
Posts: 784
My Ride: 03 325xi, 03 330xi
Send a message via Yahoo to tomoyer
dmax, as a couple others have stated, it seems some serpentine belt tension pulleys used the T50 instead of the 8 mm hex, running change, or BMW just took what they were supplied with? The spec was for both the AC and the Serpentine belt tension pulleys to use 8 mm hex. On my '03 325xi, the AC tension pulley bolt is T50 and the Serpentine belt tension pulley 8mm, same on my '03 330xi Sport. Go figure! At any rate, a good quality 8mm hex or T50 socket is a must!!! I use a 18 inch long, 1/2 inch drive breaker bar with 3/8 inch adapter (my T50 and 8mm are 3/8th drive sockets) to put the new belts on because you have both better leverage and control. I only use a normal 3/8 inch ratchet to remove the worn belts because you don't have to move the tension pulleys as far. The replacement bolt should be available should one be needed, what you will get, T50 or 8 mm hex, not sure, but as long as the threads are correct and the length, doesn't matter.
tomoyer is offline   Reply With Quote
Old 08-10-2012, 11:52 PM   #24
choleaoum
Ceiling missing!
 
choleaoum's Avatar
 
Join Date: Jan 2010
Location: Long Beach, CA
Posts: 1,737
My Ride: BMW 330Ci
Send a message via AIM to choleaoum
I'll repeat that a quality t50 or 8mm is a very good idea. Don't get stuck on a 5 minute job using a cheap sockey
choleaoum is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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
Censor is ON





All times are GMT -5. The time now is 06:49 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use