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Minneapolis Moline Tractors Discussion Forum

New to this sight, help with thoughts ideas.

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ROWDY

08-21-2005 18:40:11

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Dad bought and restored a 1957 335 gas about 20 years ago from my cousin. Replaced electrical parts, worked on the torque (I think), split the tractor in half to replace leaking seals, gaskets,ect and finaly nice paint. Few years later he bought a Davis loader. The tractor and loader has been our bread and butter on the farm house. Mowing, spreading stone, cleaned the pond, cleaning the woods, snow removail, the list can go on forever. He just finished a two year long restoration of a 1944 JD "A". Nice looking "SHOW" tractor. Now he has a burr in his pants to again restore the 335 Minneapolis. After he buys something to replace the loader like a backhoe. Leaks, paint new rims & tires on the rear. Just weaks ago I bought a restored 1959 445 Minneapolis. Serial#10104809. If my sources are correct its the 4th one made in 1959. The 445 Has a nasty oil leak at the top of the oil supply tube. Then it flows on the outside on my priceless paint. Now the true questions and ideas.
-What is the procedure to replace the upper seal?
-What is common trouble issues of our tractors?
-Agco sells some limited parts, what is availabl?
-On both tractors the gas gauge doesn't work. The 445 not even wired up. Where is the sender located? (knowlage before I remove the sheetmetal)
-On my compreshion gauge, The 445 shows 125-130. Is that about right? (not sure how true the gauge is though but only 5 Lbs off with the same gauge)
-here in a few weaks their is a tractor-pull (dyno). Any quick cheap tricks that you guys can share?
-Maby later in a year or 2, I may decide to cut the engine "SOME" for pulling. Any suggestions now so I can start saving and serching for parts and ect.now?
-I'll have more Q's later. Thanx in an advance!

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JK2

08-23-2005 05:55:44

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Re: New to this sight, help with thoughts ideas. in reply to ROWDY, 08-21-2005 18:40:11

I just fixed a leaking oil feed tube on a JetStar3 last week. The engine had been apart not long ago. I found two problems that caused it to leak. First the rubber donut was simply placed under the metal cup instead of inside it. Second someone apparently made a new oil feed tube which was a bit to long to allow the nut to compress the rubber donut properly to seal on the adapter plate. I put the donut inside the metal cup and added 2 washers on top of the metal cup to make it all seal properly. You usually don't have to remove the rocker arm shaft to work on this seal assembly.

John

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Kelvin

08-22-2005 18:24:59

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Re: New to this sight, help with thoughts ideas. in reply to ROWDY, 08-21-2005 18:40:11

I think to replace that seal on the oil supply tube you will have to remove valve cover, rocker arm, and the nut at the end of the tube, That nut will have a little s-shaped copper tube running over to the rocker arm.
There is supposed to be a rubber donut on that tube, with a washer on top and of course, the nut to squash it tight so it can't leak. Valve clearance is .010 intake and .018 exhaust.

That said, I have a jet2 that leaks there and the engine was supposed to have had a ring job. The guy who did the job was very fond of RTV, so I guess he thought he didn't need the rubber donut. I've put 2 back-a U302 and another 206 with that donut and they didn't leak.

I don't know what the compression is supposed to be, but i've seen other engines run fine with only 75 or so psi. You said it was about even. IF it doesn't smoke, I wouldn't worry about it.

As far as weaknesses, I think the hydraulics were troublesome if anything was.

I own a 335 (Utility) and I really like it. 3-point is weak, though.

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ROWDY

08-25-2005 13:06:19

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Re: New to this sight, help with thoughts ideas. in reply to Kelvin, 08-22-2005 18:24:59

Thanks for the follow-up. The oil tube has been tampered with in the past with two copper washers. Not any kind of rubber for a seal.

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