[Vwdiesel] pulley alignment

[Roger Brown]

On 11/25/2011 7:17 AM, James Hansen wrote:
> I'm pretty sure there are different water pumps, a long and a short, but I
> believe the different hubs were to get the offset correct- as in the end of
> the hub winds up in the same spot, even tho they look completely different.
> There are four pulley configurations IIRC, with or without a/c and gas or
> diesel, that use two different water pump pulleys offsets to accomplish that
> feat. Spark up ETKA if you have that would tell the tale...
> -james

I ran into a similar issue on my 1.9D engine (no A/C).  I damaged the water pump pulley 
(stamped steel) and had to replace it and had trouble finding a pulley with the right 
offset at a couple of junkyards I hit.  I eventually found one that was close on a gasser 
that had a cast iron pulley.  It was sticking out about 1/8" too far.  But with the thick 
web of the cast iron, I was able to chuck it up in a lathe and shave that much material 
off the inside of the pump flange and get it to line up perfectly.  So there are different 
pulleys to different amounts of offset of the mounting flange vs. the center of the 
pulley, kind of like with car wheels and various offset/backspacing measurements.  Some 
are flush across the outer face, some are more centered and then there are the stamped vs. 
the cast versions.


-- 

   Roger