water pump replacement help!!(Audi 80)

[Ti Kan]

dfdsf dfdsf writes:
> The water pump of my car(1988,Audi 80,4 cyls,manual)is
> leaking. I can find a hole at the bottom of the water
> pump and coolant is leaking there. Once I drive, it is
> leaking and will stop leaking when stop. It is leaking
> fast.Within 40 minutes, it will be empty.
>
> I was told that the plug in the water pump is missing
> and the water pump itself maybe bad due to the broken
> seal inside,etc.And the solution is to change the
> water pump.
>
> As it is very expensive to change it($300-400),I am
> wondering whether sombody would like to tell me how to
> change it by myself,what tools do I need,and any
> illustrations or descriptions from a manual book is
> highly appreciated.

The 4 cylinder engine's water pump is relatively easy to change
and if you have some skills you should be able to do it yourself.
The pump is v-belt driven, and the replacement pump is just
the front half of the water pump unit (get a German made replacement
only).  Based on my memory, all you have to do is loosen the
belt, remove the lower radiator hose and drain coolant (for safe
disposal), remove the pulley from the pump (3 bolts), remove the
pump unit from the block (another few bolts), remove the lower
thermostat flange from the pump (2 bolts), separate the two
halves of the pump (undo a bunch of bolts and pry it apart).
Clean the mating surface of the back half of the pump so it's
clean and free of all gasket material.  Bolt new pump into the
original back half housing with a new gasket and sealant, Install
housing onto block with a new o-ring (clean the mating surface there
too), and install a new thermostat, o-ring and the flange.  Re-connect
hose, flush system and fill with new coolant, reattach pulley and belt.
Voila.

-Ti
2003 A4 1.8T multitronic
2001 S4 biturbo 6-sp
1984 5000S turbo
1980 4000 2.0 5-sp
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