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John Deere Tractors Discussion Forum
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1950 JD B Engine

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B Bob

07-07-2007 12:30:22




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Acquired 1950 B that hadn't run for 6-7 years, put water in radiator and discovered water leaking out of crankcase. Decided to start at head and work back to the crank. Pushrod tubes and valves were bad so had head ground, tubes replaced and valves replaced. Pistons and sleeves look okay but I will be replacing rings. My next chore is to remove block and have it checked - there is no evidence of any cracks or leaks I can see and don't really want to do it if not necessary. Need advice as to whether I really need to go that far. Tractor will not be used to work - just play. Am open to any and all comments/advice. Thanks

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Kent Petersen

07-10-2007 19:04:36




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 Re: 1950 JD B Engine in reply to B Bob, 07-07-2007 12:30:22  
Bob you can pull out the block the oil line bolts to the crank case and the gasket seals the passage to the block this is true on 47 thru 52 A and Bs



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B Bob

07-10-2007 20:53:08




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 Re: 1950 JD B Engine in reply to Kent Petersen, 07-10-2007 19:04:36  
Kent;
That is the best news I've heard yet. I am struggling to find the room to even get a wrench on the pipe fitting at the front of the crankcase. Thanks!



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johnlobb

07-07-2007 16:53:38




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 Re: 1950 JD B Engine in reply to B Bob, 07-07-2007 12:30:22  
Check my message to the guy with the '52 B. I think you probably will be ok with reinstalling the head properly. John L.....



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B Bob

07-08-2007 07:00:11




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 Re: 1950 JD B Engine in reply to johnlobb, 07-07-2007 16:53:38  
I appreciate the input. Am leaning towards not pulling the head. However, IF and WHEN I do need to sometime, is there a majic bullet to remove the tappet lever oil line connector in the c-case....or is the connector just a slip on fitting to the back of the block? I can barely get a wrench in there let alone remove the coupling nut. Want to make sure I'm not going to damage something by NOT disconnecting the nut.
Thanks

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P Browning

07-08-2007 07:55:17




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 Re: 1950 JD B Engine in reply to B Bob, 07-08-2007 07:00:11  
B Bob -- You may find a set of crows foot wrenches very helpful now and then for your tractor. They have saved my bacon more than one time on JD-H tractors. A crows foot wrench fits onto the end of a socket wrench extension, and mounts at a 90-degree angle -- giving it the name "crows foot". Those with 3/8" drive are quite suitble for these operations. They are available through Sears and any place that sells automotive tools. 'Just a thought! While you are at it, seek also a 9/16 Obstruction Wrench -- great for distributors and magnetos! (PatB)

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B Bob

07-08-2007 07:31:17




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 Re: 1950 JD B Engine in reply to B Bob, 07-08-2007 07:00:11  
Correction on that last reply. Am leaning towards not pulling the BLOCK. The Head has been gone through and is okay.



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