Notices
924/931/944/951/968 Forum Porsche 924, 924S, 931, 944, 944S, 944S2, 951, and 968 discussion, how-to guides, and technical help. (1976-1995)
Sponsored by:
Sponsored by:

Alternator replacement: tensioning

Thread Tools
 
Search this Thread
 
Old 06-22-2005, 12:29 AM
  #1  
jinx099
Instructor
Thread Starter
 
jinx099's Avatar
 
Join Date: Feb 2005
Location: Ft Collins, CO
Posts: 102
Likes: 0
Received 0 Likes on 0 Posts
Default Alternator replacement: tensioning

I started my alternator replacement today and I'm having a small problem getting the belt off. I've taken off the tensioning rod that's attached to the AC compressor, but I am having a hard time getting the compressor to rotate towards the block enough to take the belt off. I hit it a few times with a hammer and it helped a little bit but not enough.

Theres gotta be a trick to getting it to rotate all the way in. Can anyone help?
Old 06-22-2005, 12:37 AM
  #2  
sharky47
Set to Full-Auto
Rennlist Member
 
sharky47's Avatar
 
Join Date: Jan 2003
Location: Fema region 6
Posts: 18,032
Received 126 Likes on 67 Posts
Default

You loosened all the mounting hardware, right?
Old 06-22-2005, 12:40 AM
  #3  
jinx099
Instructor
Thread Starter
 
jinx099's Avatar
 
Join Date: Feb 2005
Location: Ft Collins, CO
Posts: 102
Likes: 0
Received 0 Likes on 0 Posts
Default

i loosened the tensioner, then removed the bolt on the AC compressor side

I also loosened the bottom alternator bolt, it seemed to help slightly
Old 06-22-2005, 12:43 AM
  #4  
apierce918
Addic
Rennlist Member
 
apierce918's Avatar
 
Join Date: Apr 2005
Location: Fox Valley, WI
Posts: 6,293
Likes: 0
Received 0 Likes on 0 Posts
Default

i got my belt off by loosening the turnbuckle on both the ac compressor AND the power steering pulley. they were stuck pretty good too, i have a scar to prove it
Old 06-22-2005, 12:54 AM
  #5  
Chris_924s
Nerd Herder
Rennlist Member
 
Chris_924s's Avatar
 
Join Date: Feb 2002
Location: Central Illinois. Cornfields a plenty.
Posts: 16,526
Received 5 Likes on 3 Posts
Default

Dont forget the top bolt!
Old 06-22-2005, 01:01 AM
  #6  
jinx099
Instructor
Thread Starter
 
jinx099's Avatar
 
Join Date: Feb 2005
Location: Ft Collins, CO
Posts: 102
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by wizkid918
i got my belt off by loosening the turnbuckle on both the ac compressor AND the power steering pulley. they were stuck pretty good too, i have a scar to prove it
I was told by a friend that I just need to compress the tensioner completely on both ends of just the alt. belt tensioner to get the belt off. I dont really want to touch the power steering belt if I don't have to.
Old 06-22-2005, 01:03 AM
  #7  
Tony K
Burning Brakes
 
Tony K's Avatar
 
Join Date: Feb 2004
Location: Toledo and Cleveland, Ohio
Posts: 1,152
Likes: 0
Received 1 Like on 1 Post
Default

Listen to Chris. You don't need to mess with the steering belt. Just loosen the bolt on which the ac compressor swings...
Old 06-22-2005, 01:21 AM
  #8  
Macfreak007
Three Wheelin'
 
Macfreak007's Avatar
 
Join Date: Aug 2003
Location: Louisville, Ky/Altanta, GA (Georgia Tech)
Posts: 1,815
Likes: 0
Received 2 Likes on 2 Posts
Default

I would have kept the tensioner on and used that to take the tension off the belt, then use a large screwdriver to pry the belt off.
Old 06-22-2005, 02:05 PM
  #9  
ibkevin
Defending the Border
Rennlist Member

Rest In Peace
 
ibkevin's Avatar
 
Join Date: Aug 2003
Location: Sun Diego
Posts: 17,541
Likes: 0
Received 2 Likes on 2 Posts
Default

What 924s said!
Old 06-22-2005, 04:10 PM
  #10  
jinx099
Instructor
Thread Starter
 
jinx099's Avatar
 
Join Date: Feb 2005
Location: Ft Collins, CO
Posts: 102
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks a lot guys for the help, i got the belt off by compressing the strut and prying it off with a screwdriver.

Now, I have a small question that was not answered in the procedure on clarks garage or on paragon's tech-session site. Obviously I need to install the pulley onto the new alternator from the old one, but there was something on the back of the old one that is not on my new one:



What is this piece and do I need to install it on my new alternator?
Old 06-22-2005, 04:34 PM
  #11  
Tony K
Burning Brakes
 
Tony K's Avatar
 
Join Date: Feb 2004
Location: Toledo and Cleveland, Ohio
Posts: 1,152
Likes: 0
Received 1 Like on 1 Post
Default

Noise suppressor, perhaps? I dunno...
Old 06-22-2005, 04:36 PM
  #12  
Macfreak007
Three Wheelin'
 
Macfreak007's Avatar
 
Join Date: Aug 2003
Location: Louisville, Ky/Altanta, GA (Georgia Tech)
Posts: 1,815
Likes: 0
Received 2 Likes on 2 Posts
Default

can't tell from the pic, but may be the voltage regulator, and you do need to swap that, if that is what it is...
Old 06-22-2005, 04:52 PM
  #13  
IceShark
Nordschleife Master
 
IceShark's Avatar
 
Join Date: Jun 2001
Location: Minneapolis, USA
Posts: 5,159
Likes: 0
Received 1 Like on 1 Post
Default

No, no that is not the voltage regulator, is a suppression circuit. You don't need to transfer it to the new alternator, just forget about it. You can see the voltage regulator at the bottom of his green circle.

If you had to pry the old belt off with a screwdriver, good luck getting a stiff new belt back on without injuring it. You need to get the AC compressor to move in a bit more.
Old 06-22-2005, 06:29 PM
  #14  
jinx099
Instructor
Thread Starter
 
jinx099's Avatar
 
Join Date: Feb 2005
Location: Ft Collins, CO
Posts: 102
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by IceShark
No, no that is not the voltage regulator, is a suppression circuit. You don't need to transfer it to the new alternator, just forget about it. You can see the voltage regulator at the bottom of his green circle.

If you had to pry the old belt off with a screwdriver, good luck getting a stiff new belt back on without injuring it. You need to get the AC compressor to move in a bit more.
Okay I'll leave it off.

When I put the alternator back on, I'm hoping I can just slide the belt on it before I mount it. If so, that would be great, no screwdrivers required.
Old 06-22-2005, 07:05 PM
  #15  
IceShark
Nordschleife Master
 
IceShark's Avatar
 
Join Date: Jun 2001
Location: Minneapolis, USA
Posts: 5,159
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by jinx099
When I put the alternator back on, I'm hoping I can just slide the belt on it before I mount it. If so, that would be great, no screwdrivers required.
Give it a try. However, depending on the alt mounting ears and the portion that fits in, that can be a damn tight fit. There can be like 0 clearance so you really have to go in square to get it to fit in and align the through bolt holes. With the belt on you may not be able to do that.

You will find it was a lot easier to remove than re-install.


Quick Reply: Alternator replacement: tensioning



All times are GMT -3. The time now is 10:24 AM.