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1950-T

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WFE

03-03-2001 16:28:52

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Was reading the posts below on the 1950-T and thought it warranted further discussion, or in this case, defense. The turbocharged 310 cu. in. Oliver/Waukesha engine used in the 1950-T was a great engine in performance and fuel economy and could live a long time if they were built properly. Biggest problems related to poorly balanced crankshafts, weak rod bolts, and two-piece pin bushings. When rebuilding one, all these can be rectified by: having crank balanced, replacing rod bolts with new and torquing only once, and replacing pin bushings with new one-piece design. Pin bushings tended to cause spun bearings, rod bolts and poorly balanced cranks tended to break rods and the cranks themselves. When these items are addressed during rebuild, the engine will be durable. One must keep in mind, however, that lugging the 310 below rated rpm of 2400 for extended periods is not good for it. Keep rpms up to 27-2800 to keep load on components light. As for head gaskets, the head bolt spec. was a bit conservative so we can exceed the book torque spec. by 15-20 ft. lbs and gain significantly in head gasket reliability. Also helps to use a gasket adhesive on head gasket during installation. And of course, the head and block surfaces must be true. Some 310s had a tendency for their sleeves to settle into block. This requires shimming or block decking to rectify during engine rebuild. Doing these, with perhaps a few other minor points, will make a good strong 310. Regarding oil loss through stack, probably leaking through turbo, indicating the tractor probably needs a rebuilt turbo, about $700. Good oil pressure is important so, to the gentleman looking at the 1950-T on the auction sale, look at oil pressure. If good, then bring engine up to speed and feel for excessive vibration. What is excessive? Well, if steering wheel is vibrating such that your hand tingles, probably a bad sign. The 310 from the factory was kind of a toss-up whether or not you got a good one or a bad one. But they could be a fine engine.

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MCL in IN

03-05-2001 04:56:31

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Re: 1950-T in reply to WFE, 03-03-2001 16:28:52

My dad bought a 1950-T new in 1969. He worked the daylights out of it until 1979 when he bought a White 2-135 and the T became an "extra" tracor. Pulled a 9 shank chisel plow, 18 ft disk, 21 ft field cultivator, and a 588 White 5-18 plow with it. Never caused many problems that I remember until one fateful day in the fall of 1981. We were going to get it out to pull in corn after setting all summer. Dad checked the oil and the crankcase was full of water. Maybe serious maybe not. Anyhow Dad was thinking of making some changes and he traded it for a White 2-105 (which we still have). The local dealer overhauled it and then it got stolen off his lot. What I'm getting at is that ours stayed together for a long time while being the primary workhorse on the farm. I think it just depends on if you get a good one or a bad one. As far as rebuilding I agree if it is done properly they should be O.K.

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MikeO

03-03-2001 18:14:19

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Re: 1950-T in reply to WFE, 03-03-2001 16:28:52

Good comments. I have still have 2 different versions (with and without oil cooler) of the 310 still working. Lost another one when a wrist pin let loose in the piston and sent the block, crank and half of the remaining hardware into the next county. It appears you know your 310's very well. I do have one question. I have one that was rebuilt (before I bought it) equiped with an extended oil pan. My garage lowered the oil sump pipe and took off the screen to reach this additional oil reserve. Now my tractor's oil pressure is good when we change it, but gets worse as we use it, usually down to 10 lbs idle and 15 to 20 working. Jumps up to 50 when we change it and will at 30 for a day or two before it starts to weaken. Any ideas?

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WFE

03-03-2001 20:43:00

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Re: Re: 1950-T in reply to MikeO, 03-03-2001 18:14:19

Adam brings up a very good point, as the Roosa injection pumps could be known to leak fuel into crankcase when the cup seals go bad or crack. This is certainly a possibility if the unit has been idle for any extended period of time. May check that--not too bad. If we eliminate that possibility, then I would recommend using oil like Cen-Pe-Co. We've used it and always see an increase in the oil pressure that an engine will carry, even as the oil ages or gets hot, as it certainly can in the 310 if you're working it. The other thing is that I would change oil in a 310 at least the stated 100 hour interval and would even reduce this to 70 hours if not using a higher quality oil like the Cen-Pe-Co. If you're getting 50psi at any time, pump is doing its job--providing flow against restriction which results in pressure. Decrease in pressure to 20 psi is perhaps a bit low. If memory serves, shop manual recommends a working pressure of about 24-25 psi when warm and this figure could hover around 10 at an idle. Good oil should pick this up a bit. But you could play with relief valve to bring pressure up. Can do this externally in main oil gallery by adding some small washers to spring. If all these fail, then clearances may just be getting too excessive and its time for a rebuild, in which case, you can really bring the 310 back to life. Just curious, is the 310 with the enlarged oil pan the one without the oil cooler installed? Enjoy your Waukeshas!

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MikeO

03-04-2001 06:19:16

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Re: Re: Re: 1950-T in reply to WFE, 03-03-2001 20:43:00

Thanks for the info. We already use the Cen-pe-co Series III oil. I firmly believed this oil has helped our tractors keep running. I have already played with the relief value with no change. The enlarged oil pan which holds an extra gallon is on the one with the oil cooler. I also thought of the injector pump, but when I purchased the tractor, the owner gave me all the service orders and parts lists. This included an overhaul of the injector pump and a resetting of the pump to 1955 horsepower specs. My garage will test an oil sample which I should do.

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Adam

03-03-2001 18:47:57

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Re: Re: 1950-T in reply to MikeO, 03-03-2001 18:14:19

Sounds like your getting fuel in your oil. Does the oil get fuller of not go down at all. Send in a oil test. I would not start this tractor untill the problem is found and solved.

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MikeO

03-04-2001 06:21:41

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Re: Re: Re: 1950-T in reply to Adam , 03-03-2001 18:47:57

I thought of this also, but the oil does not increase in volume. The previous owner had the pump rebuilt to 1955 specs when he did the overhaul. I will send in an oil sample for testing before we change the oil this spring.
thanks.

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larry wolfe

03-04-2001 07:33:10

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Re: Re: Re: Re: 1950-T in reply to MikeO, 03-04-2001 06:21:41

I had the same loss of oil preasure on mine too only worse.All bearings where replaced with new style and crank was miked and seemed ok.What i found was 95% of the oil was going through the turbo.Changeing all the springs and plungers,plus adding more shims did not help.After the 4th head gasket i got rid of it.I was told by the oliver dealer that you could not get the shims for under the sleeves.The guy who bought mine replaced all the parts i did and it was in the shop again after a weeks use.It was still there a few weeks ago and i sold it 5 years ago.

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