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 > 5 Series > E34 (1989 - 1995)

E34 (1989 - 1995)

Reply
 
Thread Tools Display Modes
  #1  
Old 02-24-2014, 03:20 PM
mrod63 mrod63 is offline
Registered User
Location: New Jersey
 
Join Date: Feb 2014
Posts: 2
Mein Auto: 89 525i
89 e34 525i Timing Belt

I bought a new BELT and WATER PUMP and TENSION-ER and installed all of it, BUT
before I started the work I made sure I had set the TDC to match top and bottom, , at that point I removed the belt , but now after putting everything back together I did my two rotations I see that the bottom mark matches perfect to the engine V cut, but the top seems to be one tooth behind the mark, After doing some research online, I loosen the tension and did two more rotation but that has not helped me at all, I still have the bottom matching but the top seems to still be one tooth behind, What can I do to fix this issue, my back is broken from doing this and its driving me crazy HELPPPPPP
All suggestion will be highly appreciated and if you can give me baby steps that would help as I am a weekend mech trying to save some cash

Last edited by mrod63; 02-24-2014 at 03:21 PM.
Reply With Quote
Ads by Google
  #2  
Old 02-24-2014, 04:31 PM
Doktor Bert's Avatar
Doktor Bert Doktor Bert is offline
Der Sturm Uberdoktor
Location: Palm Springs
 
Join Date: Oct 2012
Posts: 870
Mein Auto: BMW 525i
M20 engine I assume???

Getting the timing correct on a belt motor takes a little time. I've done a lot of oddball motors with belts, like Ferarri F430's that make your head spin with their complexity, so I am trying to find a way to explain how I would do it.

If I understand you correctly, what you need to do is move the cam one tooth, independent of the crank. I would go to TDC and align the crank, then loosen tensioner and move the cam to where I want it to be.

This is a decent 'how-to' with lots of pics. It's an E30 forum, but features the M20 engine:

http://www.e30tech.com/forum/showthread.php?t=1889

Maybe another member will chime in....
__________________
"Herr Doktor will see you now..."

Last edited by Doktor Bert; 02-24-2014 at 04:33 PM.
Reply With Quote
  #3  
Old 02-24-2014, 04:52 PM
mrod63 mrod63 is offline
Registered User
Location: New Jersey
 
Join Date: Feb 2014
Posts: 2
Mein Auto: 89 525i
that is what I need to know how to move the top one and how to do it since no books or research has told me how or tells me the type of bolt or screw it has ?
The top one I think it is what you mean when you say the CAM that seems to be pretty stiff cant move it by hand so how would I move it , using what tool

Last edited by mrod63; 02-24-2014 at 05:30 PM.
Reply With Quote
  #4  
Old 02-25-2014, 07:33 AM
Doktor Bert's Avatar
Doktor Bert Doktor Bert is offline
Der Sturm Uberdoktor
Location: Palm Springs
 
Join Date: Oct 2012
Posts: 870
Mein Auto: BMW 525i
If you relax the tension on the belt, you should be able to slip it off the cam gear enough and/or raise it off the teeth enough to change its position. If you cannot turn the cam gear, you could slightly turn the crank the (1) tooth you need and re-fit the belt...
__________________
"Herr Doktor will see you now..."
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E34 (1989 - 1995)
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 09:27 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms