[Vwdiesel] changing the timing belt

[Val Christian]

> not sure about the rest, but the pulley being loose on the shaft seems 
> like a worn keyway in either the pulley or the shaft. Make sure the key 
> isn't worn. If that pulley has slop in it with the nut torqued down, 
> you could spin the pulley on the shaft eventually.
> On Dec 24, 2006, at 8:49 AM, MLightner wrote:
> 
...
> > 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.

> > 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.  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