Oliver 1800 B series Tractor

Wheel68

New User
I purchased an Oliver 1800 B series gas tractor a few years ago that was in poor repair. The tractor S/N is 126275 844. The cylinder block P/N is 155720-A. The no. on the front flange is stamped 31420, but I am told by several people that Oliver did not trace engine S/N so I am not sure this no. will help.

The problem is that I cannot find a tach drive unit that will engage the distributor drive gear. The distributor that came on the tractor is Delco Remy P/N 112563 4000. There was no tach drive unit on the tractor. The tach drive unit that I purchased used has a spiral driven gear that is 0.600 inch in diameter and has 13 teeth. The tach drive housing P/N is 100580 (Might be a housing casting no.). The tach drive unit seems to work correctly when I turn the driven gear.

I then purchased an aftermarket parts manual (Jensales), but this did not help me solve the problem. The parts manual lists Delco-Remy distributor P/N 1112632 as being the correct distributor for tractor S/N 126275. I purchase this distributor sight unseen and when I received the distributor it had only one gear on the end of the distributor and not the two gears as on Delco Remy P/N 112563 4000.

I have come to the conclusion that the engine not the correct engine for an 1800 B series tractor.

Can anyone advise me how to determine the correct model engine in this tractor.
 
You do have the correct block! 1112632 is the correct distributor. There will only be 1 gear on the distributor. I looked in my old book at the list of some 1800 B series tractors we sold. The 31420 engine number fits in with your serial number. Now you have e-mail or a phone number
 

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