G?gay,

I have a question about the 944 FUEL PUMP.  

I own a 1984 944 and recently the electric fuel pump failed.  I
ordered a replacement but, was curious about how the pump actually
worked and why if failed, so I carefully took the old one apart.  I
found the reason it quit working, the commutator was scored and the
brushes had lots of groves.  I carefully cleaned the brushes and
polished the commutator, then re-assembled the motor but left it out
of the outer casing; the motor worked fine, very smooth and was
reitively quiet.
However, taking a good close look at the assembly to determine just
how it worked, I have to assume, when the pump is correctly assembled
, fuel engulfs the entire motor, to include the brushes, to get fuel
from the pump end to the outlet, is that correct?  I also assume, the
fuel that surrounds the inner workings of the fuel pump also acts as a
sound deadener, is that correct?

This exercise was not done to repair the pump just find out how it
worked.

Thx for taking the time to read this.

Cheers

Bob