What do I have?

mmfan55 · Dec 23, 2017

I bought a Ford industrial type loader tractor back in the spring. It was said to be a 4400. I found it has the 175 engine, not 201 that is consistent with 4400. I am guessing 3400 but thought I would ask and maybe someone can reference the numbers. Top number is hard to read so may not be perfect accurate. Here goes. K5012K. 4H155B. *C434442*. It looks like either 3400 or 4400 photo on tractor data. Has loader pump that drives from front of crankshaft, dedicated power steering pump, 6 and 4 transmission, 3 point lift and non live pto. Thanks!!!!

mhb@ufe · Dec 23, 2017

You have a 1974 3550.

Mark

Sean in PA · Dec 24, 2017

Mark is correct.

K5012K - This is the model number code:
K50 - 3550 model tractor (Industrial model in the 3000 series)
1 - diesel engine
2 - trans driven (non0live) PTO
K - 6x4 manual reversing transmission

4H155B - This is the Unit Number, which is a code that tells you the exact date and even during which shift on that date when the tractor left the assembly line. The number you posted has an extra number in in it. It should be a single digit followed by a single letter followed by 1 or 2 digits, not 3, and a single letter 1t the very end, so that "155" string of 3 numbers in a row isn't right. I assume that there is an extra 5 as that is the only thing that would make sense, so the 4 at the beginning means it was made in1974, the H means it was in August, the 15 would mean it was the 15th day of the month, and the B at the end means it was during the day shift, so the tractor left the assembly line on August 15, 1974 during the day shift.

*C434442* - This is the serial number which is a 1974 serial number which agrees with the Unit Number above.

mmfan55 · Dec 24, 2017

Thanks guys. I had no way to check
the numbers.

What do I have?

mmfan55

Member

mhb@ufe

Well-known Member

Sean in PA

Well-known Member

mmfan55

Member

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