[Vwdiesel] changing the timing belt

[MLightner]

>
>Message: 6
>Date: Sun, 24 Dec 2006 10:21:09 -0500 (EST)
>From: Val Christian <val at mongobird.com>
>Subject: Re: [Vwdiesel] changing the timing belt
>To: vwdiesel at vwfans.com
>Message-ID: <200612241521.KAA12216 at swamps.roc.ny.us>
>Content-Type: text/plain; charset=us-ascii
>
>  
>
>
>>>Now with the crank at TDC the slot at the back of the camshaft isn't
>>>quite parallel to the head - it looks to be a hair advanced, maybe 2 or
>>>3 degrees.  Also, the IP is a hair advanced - more like half a tooth's
>>>worth, as it seemed I could either have put the belt on where it was
>>>half a tooth retarded or half a tooth advanced, no in between.  How
>>>close do I need to have these set for the engine to be able to operate
>>>reliably, or should I say optimally?  Should I take the cam-sprocket
>>>lose and realign?  I haven't run it any yet, other than to turn it over
>>>by hand to see if things shift any more (it didn't).
>>>      
>>>
>
>	I would re-align.  You don't have it quite right.
>  
>
That's on my list now...

>  
>
>>>One other question:  The pully on the intermediate shaft is not a tight
>>>fit on the shaft, it moves maybe a degree either way before the key
>>>stops it.  I tightened the bolt down to about 70 ft-lbs.  Also, is it
>>>normal to be able to slip this pulley around against the T-belt after
>>>the tension is set on the T-belt?
>>>      
>>>
>
>	A couple of comments...yes the backside of the belt drives this
>	pulley, and the torque resistance is low.  Even getting water
>	on the belt can cause a loss in oil pressure. 
>
Hmm, that's a little scary to think about, are there any known 
procedures to improve traction with the TB?

> At least that 
>	was my experience on 1.5. 
>
>	With respect the the possible keyway issue...I've never seen that.
>	But I have seen worn oil pumps on non VWdiesel engines.  Since
>	the IS drives the pump, I'd dig a little further.  If it's just a
>	worn key, replace it.  A degree movement may not be a problem...
>	more could be, and a worn key definitely needs replacement while
>	you're in there.
>
>	Val
>  
>
Yeah, I've got to make sure everything's ok in this area before going 
back to timing it.  Thanks for your help.

Mike