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This section is for the discussion of the Restoration of Texans, Harvards and SNJs
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Fuel selector tapered pins

Sat Sep 08, 2012 6:10 am

how do you get the tapered pins out of the universal joints on the fuel selector assembly rods? pin punch or is there a tool to do this with?

Re: Fuel selector tapered pins

Sat Sep 08, 2012 9:29 am

I think I just used a small brass hammer.

Re: Fuel selector tapered pins

Sat Sep 08, 2012 11:19 am

Back it up solid.
Make sure your hitting or pushing the small dia side.
Some quick heat from a propane torch or heat gun can help if in an alum casting or machined part.
Modifying a C clamp or other type of clamp has worked for me on occasion if you can't get straight on to hit with a hammer.
Sometimes your back up mass needs to be machined to fit the contour of the part. I've distorted tubes before by backing up with something flat on a round tube.

Re: Fuel selector tapered pins

Sat Sep 08, 2012 12:18 pm

I think I just closed up my vise until it was just larger than the big end of the pin and tapped it through, using the top of the vise jaws as a cradle.

Re: Fuel selector tapered pins

Sat Sep 08, 2012 4:01 pm

Thanks BDK and Rich
I am trying to get the fuel selector rod disconnected @ where it exits the fuselage and enters the wing main plane in order to demate the fuselage.
I'm pretty sure this thing hasn't been taken apart since Navy service. I soaked the pins with mouse milk, a little heat gun action and hopefully they will start coming out.
Rich, you are entirely right this has to be backed up well, the last thing I want is to bend one of these little connecting rods or destroy a universal joint.
This is not a spitfire, no malletizing allowed!!
Thanks guys!!!
-Robert Starnes
N11SH SNJ-5

Re: Fuel selector tapered pins

Sat Sep 08, 2012 4:29 pm

I thought the taper pin was where the fork mounts to the valve? Aren't there cotter pins holding the u-joints together?

Look here where I took mine apart:

http://at6chino.warbirds-online.org/?p=33

Re: Fuel selector tapered pins

Sat Sep 08, 2012 4:50 pm

I am trying to take the rod out of the end of 1 of the universal joints, and leave the "gearbox" in the wing. The universal joints are taper pinned. I am trying to take it apart right at the bottom of the fuselage where the rod then connects down to the gearbox.
I may be wrong because I am not looking at it but I think our assemblies are different.

Re: Fuel selector tapered pins

Sat Sep 08, 2012 4:52 pm

cool web site by the way!! I know what I am going to be doing tommorow, reading the whole thing!!!

Re: Fuel selector tapered pins

Sat Sep 08, 2012 5:49 pm

The gearbox is midway between the wing and the hydraulic shelf. The fuel valve itself is in the wing.

I posted a bunch of my build on WIX before the blog. You mightwant to search. I gave up on the blog because deleting all the spam was too tedious. The spammers won. What a shame.
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