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Tra 12d Rebuild


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#1 Clippnalawn OFFLINE  

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Posted June 03, 2012 - 02:36 PM

Hi guys I'm looking for a little advice. I have a tra 12d that was running but not well, it would not idle and had an itermittent miss, and the governor was not working. I tore the whole thing down, found leaky head gasket, governor gear in pieces and quite a bit of carbon. my question is - the valve seat for the exhasust valve is "loose" and by loose i mean if i push or pull on it with a finger i can see the tiniest movement and i can hear a "ping" sound. My budget is pretty small on this one so i am wondering if i need to have a new seat installed or if it will survive like it is. the tractor will be used for a little tilling, wagon pulling, and for my son to cruise around on.

#2 chris m OFFLINE  

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Posted June 03, 2012 - 05:26 PM

valves1.gif You can follow this picture to secure that seat. Good luck!
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#3 Clippnalawn OFFLINE  

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Posted June 03, 2012 - 10:24 PM

ok, great i will give that a try. thank you!

#4 MH81 ONLINE  

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Posted June 03, 2012 - 10:47 PM

We had a Briggs that did this a couple of times (one on each cylinder). Did just like the paper above said, but our would actually come out of the hole. Before we used the punches, we scuffed the seat and around the seat hole and added a little JB Weld, just for insurance. Worked fine.
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