1934 John Deere Gp A

[greenguy1934]

When my grandpa passed away i was blessed to enherit 2 tractors a 1939 styled B and a 1934 Jhon Deere A that my great grandfather bought straight off the production line. If you are wondering it is number 236. The B i rebuilt the carborateor and replaced the plugs it runs and just needs a muffler and tires and panted. Now the A on the other hand has been seised in place just the engine not the trans mition ive tryed croil pb blaster break fluid but nothing seems to work im afraid that it needs rebuilt.Im 13 my family has no money to spare and could really use some advice. A pictuere of the 34 A will be below

 

[Jim Gorter]

It depends on how bad the pistons are seized. If tractor sat outside and water has gotten into cylinders, then a teardown of engine is in order. If kept inside a shed, it may be a "light stick" and just keep penetrant in cylinders and try rocking the flywheel every so often. Once a little movement is felt, just keep working the flywheel until it rotates freely. This method takes time for the penetrant to get to the seized area in cylinders. So you need to go slow and easy. Jim.

 

[barry county]

I would be very very hesitant about trying to get the engine freed up without at least removing the cylinder head. Even if its only "lightly" stuck (which I'm doubting), you'll still want to run a cylinder hone through it. For the price of a head gasket and 9 lead washers, and a few other gaskets that can be made by hand, you will have much more luck getting it unstuck, and you will know the condition of the internals. You can also clean up and lap the valves while its apart.
These old 2 cylinders are very forgiving on tolerances. They will run even when worn out! Might smoke a little, but It'll run cheaply. You can get it running, then decide to put a little money into it later as you get some. That's what I do!
An early open fanshaft A with the GPA tag is quite a nice tractor to get. Congrats

 

[DJB]

So your serial number is 410236? I collect unstyled A's and have a few 34's. Would love to talk to you more about your tractor and its history (and see some pictures). You can contact me directly vie email which is [email protected].

If that were my tractor, there is no way I would try freeing it up without taking it apart. Especially if you have early parts.

 

[Mike M]

You are young so time is on your side. As long as you have a spot to store this tractor inside you can keep it from getting any worse until finances improve. I'd use a sucker and suck any and all water left in the cylinders out. Then use diesel fuel because it is about the cheapest thing unless you can get some used ATF for free from a bus garage as they change fluid a lot and get a lot of waste oil. Fill both cylinders as full as you can get them. Put spark plugs back in. Then keep on filling it up through the exhaust and intake to get it clear full. Then let it sit. The longer the better as time is on your side.
If this tractor locked up from sitting outside a tear down may likely be needed at some point. If it locked up while having the stacks covered or sitting inside then I would have hope of freeing it up and getting it to run. I have done several without issue in the past. There are several steps to this process. NONE OF THEM ARE TRYING TO PULL START IT FREE ! That can really wreck things.