To start I've been working on a 1941 Oliver 70 row crop for a few months now and come to find out that its a 1941 from the serial number which is (241095). So i start looking at the gearing and find out its a six speed and the throttle and choke are in completely different spots than what other 70s I've seen. the throttle is on the steering column like the 66 and the 77 and so on and the choke is below the starter button, and there's a toggle switch for turning on electronics. I have contacted the Charles city museum but they only go back as far as the 50s for the tractors. I'm at a loss for words and thoughts and the endless nights trying to find something but i cant and would appreciate any help possible. thanks.
- Thread starter farmer20
- Start date
I believe there was a field conversion available to move the throttle to the column. All you'd have to do is drill
a hole in the dash to move the choke. They just had a push pull switch for ignition and lights, so a toggle would
replace that easy enough. As far as gearing, they were generally only a four speed if they came out on steel
wheels.
a hole in the dash to move the choke. They just had a push pull switch for ignition and lights, so a toggle would
replace that easy enough. As far as gearing, they were generally only a four speed if they came out on steel
wheels.
JohnRowehl
Member
- Location
- South Central PA
The amount of knowledge that comes out of this forum is incredible.
scootergmc
Well-known Member
What's your serial number suffix?
This is the info I have saved from BA Star (whose authority I would not question):
[b:9b19f2119e][i:9b19f2119e]"The serial number plate shuld have a sufix after the serial number that begins with "C". C-71 is for the four speed, C-72 is six speed, C-73 is a three speed reverse and C-74 is low speed, six speed trans. The early serial number tractors could be ordered with the optional six speed trans. Those tractors from the factory will have the C-72 sufix."[/i:9b19f2119e]
[/b:9b19f2119e]
As has already been said, the throttle could be easily converted from the ratchet lever style.
scootergmc
Well-known Member
Perhaps the suffix was not added until later tractors. What information are you exactly looking for or what are you trying to confirm?
scootergmc
Well-known Member
Why don't you post some pictures? Then we can all have a better idea of what you're working with and can speculate on what's been done to it over the past 82 years.
Just to add to your problem. Since the serial number tag is on
the block if the engine was ever swapped, which was common
back in the day, unless someone took the time to put the original
tag on the replacement engine, which most didnt, theres also a
possibility you have a 1941 block in a chassis from another year.
There are a lot of 60s and 70s that way.
the block if the engine was ever swapped, which was common
back in the day, unless someone took the time to put the original
tag on the replacement engine, which most didnt, theres also a
possibility you have a 1941 block in a chassis from another year.
There are a lot of 60s and 70s that way.
scootergmc
Well-known Member
Well, if I'm reading the parts book correctly, the distributor wasn't standard on the row crop until serial number 265690. Starting at serial number 223151, a distributor changeover package was available. So I think it's safe to say that engine was converted from magneto to distributor by kit or from a later tractor, assuming the engine is original to the tractor.
I read somewhere on this forum the brake equalizer was standard if it was equipped with the optional six speed transmission, but I don't know much else about that.
I think they had dates cast on the transmissions, so I'd crawl underneath and look for *I think* a five digit digit casting number somewhere on the bottom.
scootergmc
Well-known Member
Also, my parts book has an updated section at the front of the book which, among other things, lists the governor control change over package for the 70. So I guess it could've been converted over (or pillaged from another) assuming the serial number is correct.
scootergmc
Well-known Member
I guess my final thought tonight is assuming the engine is correct to the tractor, and it was converted over to distributor, along with the throttle (governor controls). The tractor was converted from steel to rubber and the "safety" spacer was removed from the transmission thereby adding 5th and 6th gears. That would explain no suffix on the serial number tag.
The date code casting from the transmission would at least put it in the 1941 ball park like the serial number indicates.
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