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Modern Tractor Discussion Board Topic: John deere 2630 [Return to Forum] Author [expand] [Modern View] Scott JD2630 06-26-2009 04:58:43 67.53.173.242 20617 Report to Moderator I have recently rebuild my JD2630 Ran fine through the break in period but first time cutting hay it started to overheat. found stuck t-stat replace started it and it had blow by and also started pressurizing the radiator. Took all apart found streaking on number 2 cylinder changed head gasket and shaved the head. Put it back together thought we had it whipped but it is doing the same thing again. Blow by and pressurizing the radiator. I know it is combustion gasses but from where?? Could a brand new liner be cracked?? Not Even 2 hours on the tractor. Please help Hay down Barrowing other peoples tractor ( not a good thing) [Reply]  [Send Email] Scott JD2630 06-28-2009 13:12:18 70.101.136.73 20642 Report to Moderator Re: John deere 2630 in reply to Scott JD2630, 06-26-2009 04:58:43   Little disgusted when torn the head off today we found that one liner was about 6-8 thousandth lower then the other 3 liners not sure what to do next be cause on initial tear down there was no shems on any liners. There is always a catch I don't want to point fingers yet but when we found that liner today lower we also found that it has a different number on it. All liners have the same part numbers stamp on them but after that number there is another number on 3 liners it says 2888A but on the one that is low the number is 2878A could that be the depth on the skirt? if anybody knows please let me know   [Reply]  [No Email] Tx Jim 06-27-2009 04:48:52 67.142.163.33 20631 Report to Moderator Re: John deere 2630 in reply to Tom N MS, 06-26-2009 04:58:43   My mistake as cooler wouldn't pressurize radiator.   [Reply]  [No Email] Tx Jim 06-27-2009 04:45:33 67.142.163.33 20630 Report to Moderator Re: John deere 2630 in reply to Jim in NC, 06-26-2009 04:58:43   Scott JD2630 Maybe engine oil cooler is leaking coolant. Part # AR65812   [Reply]  [No Email] Szrachnor 06-26-2009 18:48:20 68.118.189.13 20626 Report to Moderator Re: John deere 2630 in reply to Scott JD2630, 06-26-2009 04:58:43   When you had your head off and planed, did you check it for cracks? It could have cracked when the tractor overheated. -Leon   [Reply]  [Send Email] Scott JD2630 06-27-2009 04:13:04 70.101.136.73 20629 Report to Moderator Re: John deere 2630 in reply to Szrachnor, 06-26-2009 18:48:20   Yea I had it planed and magnafluxed and also valve guides checked and valves seated   [Reply]  [Send Email] [Options]  [Printer Friendly]  [Return to Forum]   [Add a Reply] Hop to: Another Forum Tractor Talk Tool Talk Restoration Tips Paint & Bodywork Implement Alley Tractor Transporting Allis Chalmers Case Combines Crawlers Farmall & IH Ford Ford 9N,2N & 8N Fordson John Deere MH & MF Harry Ferguson Minneapolis Moline Oliver & Cockshutt Garden Tractors Orphans Stationary Engines Today's Tractors Memorabilia Tractor Tales Using Your Tractor Tractor Pulling Site Comments Test Forum Buyer Seller Feedback Kountry Life Classic Trucks