Gliders1
Guest
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 Posted:
Tue Feb 08, 2005 12:13 am Post subject:
1984 944 Fuel Pump |
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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
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Paul Elliot
Guest
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| Posted:
Tue Feb 15, 2005 12:14 am Post subject:
Re: 1984 944 Fuel Pump |
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Gliders1 wrote:
| Quote: | 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
The fuel ultimately acts as the lubricant for the pump, this is why it |
is important to not leave the ignition on if the tank is dry.
Paul
--
"To educate a man in mind and not in morals is to educate a menace to
society" - Theodore Roosevelt |
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