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Minneapolis Moline Tractors Discussion Forum
Show Parts for Model:

UTU diesel / UDU

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Dieselbear

07-23-2012 17:52:24
50.193.137.18



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What is the difference in these 2 tractors. I know they only made 30 UDU's, but what makes them special thanks, Glenn




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MDHJR

07-25-2012 17:41:39
65.55.67.166



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 Re: UTU diesel / UDU in reply to Dieselbear, 07-23-2012 17:52:24  
The UDU diesel I have seen had a diesel starter in the crankcase (held on by 3 bolts) but still had a govenor hole in the side of the crankcase. The hole was coverd by a plate and had a slug in the hole to direct the oil around where the govenor shaft would have been. THis is similar to the early GTBD setup. If you look at serial #s you will notice that UDU was made in 52 but most if not all UBU diesels were made in 54 looks like it took them a year to get the later engine into production.

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maj-mm

07-23-2012 18:59:09
69.163.4.33



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 Re: UTU diesel / UDU in reply to Dieselbear, 07-23-2012 17:52:24  
the UDU was the Diesel of the UTU. Hand Clutch. Then replaced by the regular production UBU-Diesel. Foot Clutch.



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LW

07-23-2012 20:03:25
184.3.226.208



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 Re: UTU diesel / UDU in reply to maj-mm, 07-23-2012 18:59:09  
So how does the UTS-D fit into this?



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maj-mm

07-23-2012 20:07:36
69.163.4.33



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 Re: UTU diesel / UDU in reply to LW, 07-23-2012 20:03:25  
UTS = UT-Standard Tread aka "Wheatland"



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LW

07-24-2012 06:26:51
184.3.226.208



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 Re: UTU diesel / UDU in reply to maj-mm, 07-23-2012 20:07:36  
I'm talking about the UTS-D they were export with inline pumps?



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molinegb

07-24-2012 07:42:27
67.201.136.21



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 Re: UTU diesel / UDU in reply to LW, 07-24-2012 06:26:51  
All UTS diesels were labelled UTSD. In 1956 they were labelled as UTSD Specials with G stlye front grill and cast rad bottom with steering piston running crossways like 5 Star ot M5. setup. UTSD-M were models with inline pump. Basically made from left over components from 1952-55. They used the older crankcase and drum brakes. I have one that has 108 prefix making it a 1958. Ihave a couple of 5 Stars that used inline pump setup the same as UTSD-M.

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maj-mm

07-24-2012 08:18:55
69.163.4.33



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 Re: UTU diesel / UDU in reply to molinegb, 07-24-2012 07:42:27  
There was at least ONE UTSD-Special with Inline Pump too, I owned it for a while, treaded it to a friend about 12 years ago. I bought it from Original Owner's son that said it hadn't been changed.

It appears that inline pumps were intended to export market, however, they were available from Bosch, so some may have been retrofitted.

With MM there are always exceptions to most rules, as MM did many one off's & special builds.

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maj-mm

07-24-2012 08:21:07
69.163.4.33



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 Re: UTU diesel / UDU in reply to maj-mm, 07-24-2012 08:18:55  
also my UTS-D did NOT have Power Steering. it had the cast housing, but was NOT machined for components. I've seed several others w/o PS too, have actually only seen 2 or 3 that did have power steering. They are one of my all time favorite MM tractors, they just look nice, & are that last of an era.



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molinegb

07-24-2012 08:28:06
67.201.136.21



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 Re: UTU diesel / UDU in reply to maj-mm, 07-24-2012 08:21:07  
I have seen or know of 12 U specials and know of only 1 with PS. Have seen about 25 U diesels and all have the rotary pump. I recently made a list of components required to convert to inline from rotary. 17 parts are required. Same components are used on 5 Star. So basically a inline pump could be added to M5,M602, or M670 with 336 motor.



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Dieselbear

07-24-2012 10:15:07
50.193.137.18



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 Re: UTU diesel / UDU in reply to molinegb, 07-24-2012 08:28:06  
But what about the Narrow front U tractor with Diesel engines. They had to have made more than 30. It's got to be something different about these 30 UDU tractors listed in the books



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molinegb

08-02-2012 06:59:24
72.45.106.135



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 Re: UTU diesel / UDU in reply to Dieselbear, 07-24-2012 10:15:07  
Talked to several MM people. All we could come up was possibly UDU's were built for special order. Maybe Del Monte or similar. It wouldn't be hard to make up a UDU.



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SWMolines

07-24-2012 11:49:54
20.132.68.148



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 Re: UTU diesel / UDU in reply to Dieselbear, 07-24-2012 10:15:07  
Quoting Removed, click Modern View to see

The story as I've heard it, the 283 diesel motor was built for the new UB tractors but the engines were ready ahead of the rest of the UB components. So, MM choose to introduce the new diesel engine with a limited production run of UTUs with the engine and called them UDUs. 30 were built which was enough for MM to learn that the 283 gas engine crank was not strong enough for the diesel version. Many (possibly all) UDUs were retro fitted with the heavier crank that came out in the later 283 diesels for the UBUs.

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