Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: jim 56 on October 31, 2019, 00:41:30

Title: 1972 fuel pump short model
Post by: jim 56 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?

Title: Re: 1972 fuel pump short model
Post by: BaronYoungman 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

Title: Re: 1972 fuel pump short model
Post by: jim 56 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.

Title: Re: 1972 fuel pump short model
Post by: BaronYoungman on November 02, 2019, 04:40:24

If not let me know I am sure I have a few good used ones about. Bob

Title: Re: 1972 fuel pump short model
Post by: jim 56 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.