Dukes fuel pump

[Chris Strube]

1965 M20E, at annual, my Dukes fuel pump is dripping.  Can the seals and/or o-rings and/or gaskets be replaced?  What are my options?  Any and all help appreciated, and free advice paid for with a nod and a wink.

[Nico1]

Had that same problem, sent it out to overhaul (they replaced o-rings and stuff). I used this place near Chicago -- RLB Accessory Service: (630) 543-9213. 971N Babbit Addison IL 60101.

Edited September 18 by Nico1

[Shadrach]

Strongly suggest Aeromotors for overhaul. They make a number of modifications to the pump that improve its reliability and function a great deal. They’re also very reasonable. I think less than $500. They often have an exchange pump on the shelf, but if they don’t, turn around as fast.
 

 

[KSMooniac]

Aeromotors!  Best option out there.

[Utah20Gflyer]

As others have said, I’d just send it to aeromotors.  Although someone could possibly change some seals for cheaper I doubt it’s going to be significantly cheaper than just having it overhauled.  Aeromotors will also update some things that will make the pump better than new.  

[Rmfriday]

I also would suggest Aeromotors, they really turned my pump around quick

[Joshua Blackh4t]

Had to replace mine recently, Aeromotors didn't have an exchange one and being in Australia the downtime to send it over would have been too high.

So I was forced to buy a wheldon for a significant amount more, and deal with their core swap which feels like they just don't want excess cores around so that Aeromotors or similar could have exchange stock.

The wheldon went in almost drop-in (needed shorter screws) and sounds lots nicer, so there is that for it.

 

[AndreiC]

I live very close to Aeromotors (like 50 miles away), and they overhauled my pump. Very fast turnaround and excellent service. Highly recommended.

[N201MKTurbo]

The seal that leaks is a carbon seal. It leaks when the shaft, or seal wears out. I suspect it is caused by dirt in the fuel. 
 

Back in the day the hangar ferries may have replaced the carbon seal with an o ring. It stopped the leak for a couple hundred hours. 
 

The proper thing to do is have it overhauled. It would be nice if we could get the repair parts. They are not hard to take apart. Even adjusting the regulator is easy. But I have no idea where to get the parts.