275 valve disassembly

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Millet15
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275 valve disassembly

#1

Post by Millet15 »

I have found directions posted by Murff, but I need guidance on this metal shroud. How do I remove it?Image
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Re: 275 valve disassembly

#2

Post by Rhubarb »

@BobA has a nice tutorial here:


https://www.colemancollectorsforum.com/ ... f=6&t=5256

I don't know if the pictures made it.
Last edited by Rhubarb on Wed Nov 18, 2020 2:47 pm, edited 1 time in total.
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Re: 275 valve disassembly

#3

Post by Coldwaterpaddler »

The E-Clip needs to be removed on the valve stem shaft. Be careful when removing not to have it fly across the shop or in your eye. They aren't too springy, but better to be a little cautious.
Valve_Stem_E_Clip.JPG
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Re: 275 valve disassembly

#4

Post by Rustytank »

What purpose does the shroud have? I have a 275 that doesn't have it.
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Re: 275 valve disassembly

#5

Post by Coldwaterpaddler »

The shroud, and I'm assuming you mean the U-shaped bracket, is there for the detents of the valve positions on the 275 which is different for the 275A. The 275 has three positions, including the Light position, whereas the 275 only has On and Off. That inner ring stops in the notches at the various positions.
275_Valve_Stem_Index_2.JPG
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Re: 275 valve disassembly

#6

Post by Rustytank »

Thanks!!
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Re: 275 valve disassembly

#7

Post by Millet15 »

Coldwaterpaddler wrote: Wed Nov 11, 2020 4:08 am The E-Clip needs to be removed on the valve stem shaft. Be careful when removing not to have it fly across the shop or in your eye. They aren't too springy, but better to be a little cautious.
Valve_Stem_E_Clip.JPG
Mine doesn’t appear to have the E-clip. Has what looks like roll pin that’s quite snug.
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Re: 275 valve disassembly

#8

Post by Murff »

Millet15 wrote: Wed Nov 11, 2020 9:20 pm
Mine doesn’t appear to have the E-clip. Has what looks like roll pin that’s quite snug.
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Re: 275 valve disassembly

#9

Post by Coldwaterpaddler »

Interesting. Yet another variation. Does it appear to be tapered? Try to tap it out with a hammer and punch. It'll only go one way if it is. If it's a hollow rollpin then either way should work.

Out of curiosity, what year is that 275? Mine (photo) is a 1976.
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Re: 275 valve disassembly

#10

Post by Millet15 »

It doesn’t appear to be tapered but I could be wrong. It’s hollow. Doesn’t budge when tapped. I am used to roll pins from firearms. Date on bottom is 6/78. So far, I’m not real fond of this design.
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Re: 275 valve disassembly

#11

Post by Coldwaterpaddler »

I assume you want to remove the valve so you can change the Schrader valve core? If so, maybe if you can soften up the thread locker at the fount with some acetone and then you'll be able to get the valve out without removing the valve stem.
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Re: 275 valve disassembly

#12

Post by TwoCanoes »

Millet15 wrote: Thu Nov 12, 2020 2:31 am It doesn’t appear to be tapered but I could be wrong. It’s hollow. Doesn’t budge when tapped. I am used to roll pins from firearms. Date on bottom is 6/78. So far, I’m not real fond of this design.
This one is also 6/78, doesn't appear to be tapered, it's hollow and doesn't budge when tapped from either direction. The second photo shows a depression in the valve shaft where the pin emerges. I don't know whether that depression would provide any hint as to how to remove the pin.
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Re: 275 valve disassembly

#13

Post by Coldwaterpaddler »

Hmmm...I don't have one with the roll pin so, can only offer suggestions at this point. I doubt they glued it in there. In the first photo in the previous post the brass on the valve stem looks pushed out on the left side so it appears that it was installed right-to-left. So, backing it out would be my first suggestion. It appears to be supported pretty well by the bushing in the bracket. Roll pins are straight, not tapered, so either way should work. If it were mine I'd consider removing the valve assembly whole instead of risking damage to the valve stem. That way uou can replace the valve core which resides in the F/A tube and then put it back together and move on.
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Re: 275 valve disassembly

#14

Post by Millet15 »

I need a like button for the input from you all. I haven’t made any progress thus far. I don’t like the design at all but now I feel like I have to get it apart make it run again.
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Re: 275 valve disassembly

#15

Post by zoomkat »

"I don’t like the design at all but now I feel like I have to get it apart make it run again."

So what was the original reason you started taking it apart?
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Re: 275 valve disassembly

#16

Post by Millet15 »

Valve leaking. Was going to start by tightening the nut. I used some needle nose pliers as best I could but didn’t fix.
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Re: 275 valve disassembly

#17

Post by Rhubarb »

https://www.colemancollectorsforum.com/ ... 605#p73605

Looks like you're going to have to find a hammer and a roll pin punch. Must likely you'll need to pull valve out of the fount to do this so you can support the shaft properly and not damage or bend it. As mentioned above you should probably remove the whole valve regardless so you can replace the schrader valve.
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Re: 275 valve disassembly

#18

Post by zoomkat »

You might cut the ends off of the pin with a Dremel tool cut off wheel so you can get it apart to to replace the packing or O-ring as needed. With the shaft out you should be able to drive the remaining part of the pin out and replace it with a roll pin or something similar.
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Re: 275 valve disassembly

#19

Post by Millet15 »

I did manage to punch the roll pin out and it immediately went into another dimension in my garage. I really doubt I can get this back together. That being said, on looking at the diagram for 275/275A, could I not just replace with a 275A complete valve? I don’t see why I couldn’t.
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Re: 275 valve disassembly

#20

Post by zoomkat »

"I really doubt I can get this back together."

Well, I'm sure something like an appropriate sized roll pin can be used. That being said, most anything the ~same size probably can be used, such a a section of a finishing nail, fat bailing/rebar wire, maybe a piece of coat hanger wire, and similar. My impression has been that one should not work on the 275s unless absolutely necessary.
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Re: 275 valve disassembly

#21

Post by Millet15 »

“ My impression has been that one should not work on the 275s unless absolutely necessary.”
^^^This^^^. The 275 definitely isn’t a simple process. The valve leaked when I got it so I dug in. It will most likely be my only 275 but I have to get her running. Then I will stick to 220’s, 200’s and such.
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Re: 275 valve disassembly

#22

Post by mnhogrider »

You’ll get it together and get it running prime.




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Re: 275 valve disassembly

#23

Post by Coldwaterpaddler »

Now that you've done it the next 275 will be easier. :-)
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Re: 275 valve disassembly

#24

Post by JimL »

>>My impression has been that one should not work on the 275s unless absolutely necessary.

I came to this conclusion also. I had no issues with mine, but wanted to replace the valve core as preventive maintenance. My setup was the same, but could only get the roll pin to move about a millimeter, and was concerned that further force may damage the valve. Since you now have the roll pin out and into another dimension, wouldn't a small cotter pin serve the same purpose?
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Re: 275 valve disassembly

#25

Post by Millet15 »

Gave up on the original valve and purchased a 275A valve from OCP. Much easier to work on now.
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Re: 275 valve disassembly

#26

Post by Tigerfans2 »

Some interesting Frankie's have been made from 275 founts.

Hint

Hint
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Re: 275 valve disassembly

#27

Post by Tigerfans2 »

Some interesting Frankie's have been made from 275 founts.

Hint

Hint
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Re: 275 valve disassembly

#28

Post by curtludwig »

My advice on 275s is that if the valve stem isn't leaking to leave it alone. I broke the stem off one farting around with that bracket. Thats why I left that part out of my video. Pull the valve whole leaving the bracket in place...
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