Author Topic: 1972 fuel pump short model  (Read 1935 times)

jim 56

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1972 fuel pump short model
« on: October 31, 2019, 00:41:30 »
I am about to rebuild a short pump.I have all the parts even the brushes.My question is the connection between the electric post to the brush post.The wire is coiled almost like a spring.Well one of mine is broken and unusable.I can get wire and wrap it like the good one but inside of the good one is a piece of something.I don't even know what it is.I think they are supposed to act as a resistor Does anybody know if these are neede or can I just use a piece of wire?

BaronYoungman

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Re: 1972 fuel pump short model
« Reply #1 on: October 31, 2019, 12:24:26 »
Not a part that breaks a lot so I've never really delved into it but I believe that that is a carbon rod that the copper wire is wrapped around and it acts as a resistor so I do believe it is necessary but past that, I'm sorry I don't have any other answers and that is just a guess on my part.
Bob
« Last Edit: October 31, 2019, 18:56:51 by BaronYoungman »
Bob "Baron" Youngman
1971 280 SL silver  1 car 0 boxes
1983 500sec Wheeler Dealer AMG Widebody
1985 500sec Paris Autoshow AMG coupe
1994 320sl wifes car
1988 560sec  Japan "Yakuza Car"

jim 56

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Re: 1972 fuel pump short model
« Reply #2 on: November 01, 2019, 12:06:41 »
I talked to someone at vintage euro parts.The person who actually rebuilds their pumps.He told me it is a resistor that helps run the pump cooler.He has a source that he gets them from he is supposed to call me back.

BaronYoungman

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Re: 1972 fuel pump short model
« Reply #3 on: November 02, 2019, 04:40:24 »
If not let me know I am sure I have a few good used ones about. Bob
Bob "Baron" Youngman
1971 280 SL silver  1 car 0 boxes
1983 500sec Wheeler Dealer AMG Widebody
1985 500sec Paris Autoshow AMG coupe
1994 320sl wifes car
1988 560sec  Japan "Yakuza Car"

jim 56

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Re: 1972 fuel pump short model
« Reply #4 on: November 02, 2019, 11:44:36 »
OK he called me back they are called RF chokes and are used to reduce noise for your AM radio.You can use a piece of 24 gauge wire unatead but might have a noisy AM radio.