1750 numbers

[DennisKansas]

How many 1750 Oliver tractors were made ? Did the 310 non turbo diesel have problems too in the 1750? Thanks for the help- just getting into the later models.

 

[rrlund]

5342 Oliver Row Crops,157 Cockshutt Row Crops,39 Oliver Wheatland,922 Cockshutt Wheatland,22 Oliver FWA,3 Cockshutt Wheatland. Of the 22 FWA,only 18 actually left the factory that way,the other 4 were changed back to 2 wheel drive.

The engines were the same,had the two piece wrist pin bushings that caused problems,but they weren't as big a problem without the turbo. Still need to be changed to one piece if they're overhauled. Interesting aside,some of the very last 1750s had the 1950T block. I don't know how many or at what serial number though.

 

[J. Schwiebert]

Randy. Your comments on the last 1750 tractors having 1950T blocks. You sure about that as the 1950T blocks were used in much earlier 1750 blocks. I have the serial numbers for those and if you have one of those DO NOT put a turbo on it because that is why they were used in the 1750 tractors!

 

[rrlund]

No personal knowledge,but I got it form an article in the July August 2012 Hart Parr Oliver Collector magazine that did a feature story on them. Page 40 in some special notes.

 

[Gary Mitchell]

Randy, can you explain the purpose of the two part pin? Thanks, gm

 

[rrlund]

Nope,I can't. I don't know if they thought it would get more lubrication than just an oil hole or what the deal was.

 

[johns]

Hey John, do you have any information why they switched those blocks from 1950T to 1750? Whats the difference besides the oil cooler? Why are the head gaskets different? Are the coolant holes different sizes in the block and the number of holes? Just a young guy trying to learn....

 

[B A Star]

   1750 & 1950T Diesel tractors were under development at the same time, 1966. Reliability testing proved that head gasket failures in the 1950T engine was too numerous. 1750 tractor was introduced during the 1966 Growing "O" show. The 1950T was held back, not introduced until 1967s Growing "O" show. The testing had been done with crankcase with 9/16" head bolts for the 1750 and 5/8" for the 1950T. The early 1750 used crankcases with 9/16" head bolts (from serial number 180 527 to 202 440). Crankcases have raised numbers on the LH side, top row is the Waukesha part number, second is the Oliver prime part number & third is the date the casting was poured in Charles City. Crankcase with 9/16" bolts can be identified with second row numbers: 163 371 A, 165 624 A or 166 425 A. (note: all gas tractors used 166 425 A crankcases).

   Crankcase with second row number 165 606 A had been intended for the 1950T, however because of head gasket failures a new crankcase was developed for the turbo engine to provide gasket clamping strength.


   Since crankcase 165 606 A (5/8" bolts) had been casted and machined, however did not provide proper clamping strength for the turbo engine, rather than scrap them they were used in the 1750 from serial number 202 441 to 203 482. Those engines were intended to have an oil cooler, when used in the 1750 a plate was installed in place of the cooler to direct the oil to the filter. Tractors after serial number 203 483 have crankcase # 166 570 A (5/8" bolts).


   Thus engines prior to tractor serial number 202 440 have 9/16" head bolts, all after 202 441 have 5/8" bolts. There are not a lot out there that have the smaller bolts, only 150 built in 1967.

   As a note one of the guys that farm for us had an early 1750 that he installed a turbo and increased the fuel. Yes he could not keep head gaskets in it.

 

[rrlund]

Thanks a lot for that information. That's clears up a whole lot more than the one sentence that was given to the subject in that article.

 

[J. Schwiebert]

None of the 1750 tractors actually had the oil cooler. More questions e-mail me.

 

[johns]

I also want to thank you Duane for sharing your wealth of knowledge.