Water pump replacement

[SIMON HOLTBY]

--- isham-research.freeserve.co.uk at pop.pol.net.uk,
quk at isham-research.freeserve.co.uk wrote: > One of our members recently
took his car to a specialist dealer and
> asked for the timing belt and water pump to be changed.
> 
> He was advised that it wasn't necessary for the water pump to be done
> at the same time, and that this particular (specialist, remember)
> dealer never did it.

I cannot believe a specialist would not change the water pump as a matter
of course. When I buy a new 5 cyl Audi one of my first jobs is to change
pump and belt. If the pump is not changed when it is moved to adjust the
tension the o-ring may be damaged as half of it may be stuck to the block
and half to the pump. I have applied a small amount of superglue to the
pump and smeared the block with a small amount of grease to allow further
belt changes without damaging the o-ring. But admit this is rather false
economy. 
I think people do not change the pump because it requires the removal of
the cam gear and rear cam cover which is time consuming and awkward.
> 
> 
>> 
> Within two weeks, he had a serious water leak from the front of the
> engine that proved to come from the pump.  He took the car back and
> was told, among other things, that the water pump hadn't been disturbed
> during the timing belt change.  He was charged another three hours
> labour to change the pump.

If the leak was from the o-ring then they are lying the pump was moved to
adjust the tension. If it was from the shaft then they may be correct the
extra belt tension may have damaged the shaft seal if the bearing is worn.
> 
> He's not very happy.  Has anyone else heard of this kind of thing?
> 
The dealer is saying that the pump wasn't
> disturbed - surely this also means the belt wasn't adjusted after
> fitting?

I think a belt change is possible by:-

set engine tdc

pull belt off cam gear

remove crank pulley

Refitting is reverse of above and in most cases the belt is the correct
tension. Remember old belt will be slack as it will have stretched so new
belt will be tighter.
> 
Simon Holtby

'84 urq 
> 
> _______________________________________________

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