[Vwdiesel] AC Clutch rattly

[lbaird119 at aol.com]

  When working, as James said, if it's noisy disengaged, then bearing, when you engage it, does it still click and can you see the inner part move a bit?  Have to wire up a jumper or have someone else engage it from inside.  With it locked and not turning...  Does the pulley turn with the center when you turned it with a wrench?  If so, the clutch is buggared or the bearing is REALLY screwed.  If the pulley doesn't turn with it then something may be jamming the pulley and the compressor is toast.  
  You could have a bad bearing, clutch or compressor.  Kinda hard to tell until you start pulling the clutch assy off.
     Loren



-----Original Message-----
From: Dave Cook <davevw at yahoo.com>
To: Vwdiesel <Vwdiesel at vwfans.com>; tdi <VW-TDI at yahoogroups.com>
Sent: Tue, Jan 7, 2014 11:51 pm
Subject: Re: [Vwdiesel] AC Clutch rattly


Well, the clutch died altogether today, and was the root cause of all the 
starting problems the other day, I think.

Today it didn't want to start (real slow cranking, etc) when leaving the parking 
lot for getting lunch.  Luckily a friend happened to come at about the same 
time, so we ran to my house to get my tester and cables.  Battery voltage was 
fine, but the car started immediately with the jumper cables providing a boost.  



To my surprise, the battery light was on and there was no steering assist.  When 
I got home, I discovered the serp belt was broken!

So I checked, and the pulley will not turn at all by hand, though it did turn 
(tightly) when I put a wrench on the center nut. 


I imagine that this was the problem the other day, but I got lucky and the 
clutch freed up before the serp belt broke.


Does this mean I need the outside part, the whole clutch assembly (electro 
magnet and bearing along with clutch), or the entire compressor?

 
Dave Cook


________________________________
 From: James Hansen <jhsg at sasktel.net>
To: 'James Hansen' <jhsg at sasktel.net>; 'Dave Cook' <davevw at yahoo.com>; 
Vwdiesel at vwfans.com 
Sent: Tuesday, January 7, 2014 1:39 AM
Subject: RE: [Vwdiesel] AC Clutch rattly
 

Sorry... should type slower..
WHen ac off, rattles usually mean bearing.
When AC on, rattles are usually low freon, the pump valves rattle a bit.
You can change pieces, but the clutch is usually simpler to replace as a unit.
I've had ford ones apart, you have to set the end gap on the clutch.  Just a 
spanner pin wrench is required IIRC.
later
-j


-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com] On Behalf 
Of James Hansen
Sent: January-07-14 12:28 AM
To: 'Dave Cook'; Vwdiesel at vwfans.com
Subject: Re: [Vwdiesel] AC Clutch rattly

If it rattles when the ac is on, its the bearing that the pulley runs on when 
the clutch isn't clutching.
-james

-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com] On Behalf 
Of Dave Cook
Sent: January-06-14 10:07 PM
To: VW Diesel Group
Subject: [Vwdiesel] AC Clutch rattly




Dave Cook

----- Forwarded Message -----
From: Dave Cook <davevw at yahoo.com>
To: VW Diesel Group <vwdiesel at vwfans.com>; tdi <VW-TDI at yahoogroups.com> 
Sent: Monday, January 6, 2014 9:49 PM
Subject: [VW-TDI] AC Clutch rattly



  
I have a noisy rattle when the engine is running that goes away when the AC is 
turned on.  So I figure some part of the clutch is getting old/worn.  It was 
particularly loud last night when the engine was very cold (though quieted to 
the "normal" level of rattle I'm used to after driving a bit).

Has anyone replaced all or part of the AC clutch?  


I've seen the whole clutch assembly for sale (the bearing, electromagnet, etc)as 
well as just the part of the assembly that looks like the outside of the pulley 
system, the part that looks like the triangle with 3 arms coming off it.  It 
appears that part is relatively easy to replace, while the whole assembly is 
more involved.


What is the likely source of the rattle?


Dave Cook
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