4430 SCV stuck metering valve

John401 · Mar 10, 2017

I am working on a SCV on a 4430. I have the valve cap off. I had to remove the metering arm to remove the cap. The metering valve is rusted(?) in the housing. I have had PB Blaster on it for 2 days. I heated the disassembled scv up to 300 degrees with no help. I used Visegrips to try to move it. Is there any tricks to getting it unstuck? Do I just need to buy a rebuilt SCV?

tim s · Mar 10, 2017

Try tapping it down in a bit then work it back and forth a little,they get stuck in the first quarter inch cracking the rust a bit and it frees up,be sure you get it clocked right when you put the handle back on.

John401 · Mar 10, 2017

Thanks Tim.I finally got it out. I have never had one stuck as tight as this one. Is there any way to keep moisture out so this will not happen again? The cap has the 6 flat rubber washers. I see that the late caps had a large flat ring that goes around the outside edge of the cap.

Thanks again...

tim s · Mar 10, 2017

About the best you can do is to clean it up and put some sticky grease on it, the 0-rings don't seal that area..

4430 SCV stuck metering valve

John401

New User

tim s

Well-known Member

John401

New User

tim s

Well-known Member

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