[Vwdiesel] changing the timing belt

Terry Briggs vbriggs at stny.rr.com
Sun Dec 24 10:04:25 EST 2006

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:

> Does this sound right, or at least normal?  after replacing the water
> pump and the intermediate shaft seal I proceeded to replace the timing 
> belt.
>   I got the camshaft, crankshaft and IP pulleys all in their respective
> TDC positions.  I didn't want to take the cam pulley loose, so I ended
> up slipping the belt up onto the IP pulley last. Though the tensioner
> was set for minimum tension, it was difficult to do but I don't think I
> damaged the belt any.  Once I adjusted the tensioner though things
> shifted just a bit.
> 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).
> 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?
> As always, thanks for any input.
> Mike in NC
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Third Wheel engineering
Custom Design and Fabrication
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