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Farmall & IHC Tractors Discussion Forum
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Need valve spring retainer/spring cup

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braol

02-21-2021 21:03:43




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Any leads on where I can get a replacement valve spring cup? I can find the keys, springs, valves, guides, etc...but not the round spring cup. I'll take a used one at this point. My old one was worn in the middle...all dished out.




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braol

02-25-2021 13:05:41




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 Re: Need valve spring retainer/spring cup in reply to braol, 02-21-2021 21:03:43  
Well, like I said, I found the seats. Robert's Tractor Supply...online. Whew! I ordered extras because you just never know....



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braol

02-23-2021 06:03:07




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 Re: Need valve spring retainer/spring cup in reply to braol, 02-21-2021 21:03:43  
Quoting Removed, click Modern View to see

It was a very strange way for an "upper spring seat" to wear-out. What essentially happened, for lack of the right term, is that the hole in the seat sort of mushroomed causing the valve to 'sink' down far enough into the hole as to cause the valve to not have enough spring pressure to fully close. When I first looked at the valve you could not see the 'keepers' (or keys) due to how far it had sunk. In fact, the valve was so far down and sort of wedged in there to the point that I could not remove the upper seat...even with the valve spring fully compressed.
The face of the rocker is in good shape, spring is fine, push rid is straight, valve is fine and not bent. The valve fully seats as verified by leak-down test. I even have a cheap borescope that I stuck into the cylinder and the valve isn't burned or worn or anything. It is not a full tear-down, so I have no idea about the cam lobe, but when rotating the engine everything moves normally. What I found surprising (my background is Porsche street cars and Xfinity race cars) is how little lift there is in the tractor engine valves. It is a pure low rev, torque machine for sure!

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D Slater

02-22-2021 13:47:04




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 Re: Need valve spring retainer/spring cup in reply to braol, 02-21-2021 21:03:43  
This is what IH called a spring seat and the clip that went on valve stem.



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braol

02-22-2021 07:23:15




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 Re: Need valve spring retainer/spring cup in reply to braol, 02-21-2021 21:03:43  
Question:

Parts book shows 42040D "Seat, Valve Spring" the round 'spring cup'

Book also shows 42098D "Retainer, Valve Stem" which looks like a little clip.
I know I need the 'seat' , but what are the 'retainers?' they are not the keys, because those are obviously shown on the diagram. I don't recall a separate, second little part called a retainer.



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used red mn

02-22-2021 10:23:57




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 Re: Need valve spring retainer/spring cup in reply to braol, 02-22-2021 07:23:15  
Sorry, got off a line while looking at my phone. The 42040D number is correct, see link. Those are a little more spendy, I would probably track down a used one, should be plenty around. Any idea what caused it to dish out? Did the end of the valve just wear down that bad? I assume you are replacing the rocker arm for that valve. Is this a complete rebuild, did you look at the cam lobe ang lifter for that valve is that all okay. Make sure you run it with the valve cover off and make sure oil is getting up to all the rockers.

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D slater

02-22-2021 08:01:16




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 Re: Need valve spring retainer/spring cup in reply to braol, 02-22-2021 07:23:15  
Clip went on valve stem below the keepers and was to prevent valve from dropping out of guide if keeper failed. Valve stem originally had a grove they went on. Some valves were replaced without a grove and some clips were just left off when work was done. Number you posted for spring seat is correct.



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D slater

02-22-2021 04:54:27




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 Re: Need valve spring retainer/spring cup in reply to braol, 02-21-2021 21:03:43  
Nothing special about the spring cup, found on all H through 350 heads intake and exhaust valves except on exhaust valves of some heads with valve roto caps. Roto caps probably not on your head unless added at rebuild. Should have some good ones from cracked heads if no luck on finding.



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braol

02-22-2021 02:00:15




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 Re: Need valve spring retainer/spring cup in reply to braol, 02-21-2021 21:03:43  
Quoting Removed, click Modern View to see

Its a bit scary that i couldn't find it anywhere...thanks for the tip, I hope they come through. I had (mistakenly) assumed that this was a common part so I had Dremel'ed the old one off. BIG MISTAKE. Although I had zero compression out of this cylinder, I still had just enough spring pressure to at least hold the exhaust valve in place enough to cause no issues (other than running on 3 cylinders). With no spring pressure now the valve is just sitting on top of the piston and the tractor is now undriveable. Short of trying to buy a distillate head and scavange the spring retainer from it I could possible be up $hi/ creek.

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used red mn

02-21-2021 23:06:07




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 Re: Need valve spring retainer/spring cup in reply to braol, 02-21-2021 21:03:43  
Try this, double check availability.



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braol

02-21-2021 21:23:25




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 Re: Need valve spring retainer/spring cup in reply to braol, 02-21-2021 21:03:43  
1946 H, distillate head, exhaust valve spring cup...or spring retainer cup. The round metal disc on top of the spring into which the valve keepers rest (stem of valve goes through the middle).



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old

02-21-2021 21:11:34




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 Re: Need valve spring retainer/spring cup in reply to braol, 02-21-2021 21:03:43  
On what it is not one size fits all. So hard to help you with out knowing what your working on



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