75 ford industrial tractor identification

zoso333

New User
Hello, I am looking at purchasing a 1975 Ford Industrial tractor
and could use some help in identifying which model it is. It has 1 rear wheel that is locked up and was told they thought it was a
brake band. I am trying to find the right manual and parts for it
but find it awfully confusing to pin point which model it is. from what research I have done so far I think it might be a 3400, 3550, or maybe a 420? any help would be appreciated. these are the #'s from the tag under the hood.

Tractor# C481760
Model# K5011F
Unit# 5K08B
engine# 5F18A
Transmission# 5H27B
Rear Axle# 5C28C

Loader# 19-638
Serial# CL II493

Backhoe# 19-388
Serial# CB I0006

Thanks for any help,
Jeff
 
A quick look through the literature I
have makes me suspect it's a 420 or later
model. Unit number 5K08B could be 1975
or 1985 (October 8th, 2nd shift)... and I
didn't see any 1975 models starting with
a K. My '85/'86 literature doesn't have
the model number breakdown like the older
literature, unfortunately.
 
I found this link that seems to suggest the tractor is a 3550

http://nouveauredneck.mywebcommunity.org/wp-content/uploads/2014/12/Ford-Tractor-Model-Information-Version3.pdf
 

Model # K5011F is for a 3550 with diesel engine, no pto and 4x4 torque convertor trans.

Production # 5K08B means the tractor was built Oct 08 1975 on day shift.

Serial # C481760 is for a tractor built in the US in 1975
 
The others have already identified it for you as a 1975 3550 with a torque converter 4x4 auto reversing transmission.

As for the one rear wheel being locked up, the problem is not a "brake band", as that model uses a multi-disk pack brake system. The brake disks may be warped and binding, but I think a more likely culprit would be busted gear teeth in the planetary gear system of the final drive for that axle.
 

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