I am trying to figure out what year, model, & serial number my New Holland tractor. On the right side of transmission mounting boss is these numbers; (EM4H4C) (.6L23B) (.355273M.). In center of pan rail on right side of engine are these numbers; (.NA639484.) (6J03) (82850639). Do any of these numbers tell the year, model, & serial number of tractor? I want to get an operator manual & a repair manual for it. I want to make sure I get the right one.
Tractor Serial Numbers (1940-1975) Allis Chalmers - Fits various models Case - Fits various models Cockshutt - Fits various models Ford - Fits various models International / Farmall - International / Farmall - Fits various models Fits John Deere - Fits various models Massey Ferguson - Fits various models Massey Harris - Fits various. HJ5201 Serial Number Reference Guide. Updated Serial Number Reference Guide is a Must amongst Collectors, Restoration Specialists, and Tractor Lovers of all Kinds.
Any help will be appreciated. Do you know what the model & serial number is from those numbers? Not really, though the number 82850639 is a part number for the engine used in models 5610S, 6610S, and 7610S.
Those model tractors match you calling it a NH vs. A Ford and fall in line with the date code post from above. At a glance, the rest of the numbers look like casting numbers that normally carry little meaning.
![Lookup Lookup](http://vintagetractorengineer.com/wp-content/uploads/2009/01/ford5000-engine.jpg)
There should be a serial number plate attached somewhere. I forgot where on the 10 series.
A serial number will tell a lot. Photos of the tractor wouldn't hurt either. Post added at 11:24 AM - Previous post was at 11:14 AM - Ignore the casting numbers sentence above, I missed that those came off the engine tag.
NA639484 is likely the engine serial number, which is different than the tractor serial number. Since that engine part number is only listed for those three model tractors and is a non-emissionized engine, you identified it as a NH vs a Ford, you're almost set since that narrows down the time period it was built. There are different editions of the manuals depending on vintage and are identified by serial number breaks, so you still 'need' to find the serial number tag on your tractor to be sure you get the proper manuals.
It's no secret at all. The year is not in the serial number, but the 'Unit No.' Posted on the serial number plate. The unit number is coded for the year, month, day and shift when the tractor was assembled. If it is a 2007, the unit number should start with 7, for example, a number like this: 7B14B would be translated: 7 - 2007 B - February 14 - 14th day B - afternoon shift This code has been discussed here in many threads and is not nearly the mystery as where the ID plate will be placed on individual tractor models. Maybe that's more of the mystery as to where I might find the unit # I have looked all over both my TN75DA and my TN55 and don't have a clue where else to look.
![Lookup Lookup](http://www.fixya.com/uploads/images/0aa3b5a8-4bc7-46f5-8934-95de4483fa3b.jpg)
On the TN75 there's a (according to the book) Frame and Engine ID plate which I found. A Cab ID plate which I haven't found. Both are located in the cab. Then an engine ID plate on the left side of the motor block and a frame ID in the battery area. I have found the last ID plates.
On the ID plate I found in the cab has a 'Homologation' # which I assume is the ser. On that same plate there is a 'Type' listed on the tag but nothing was ever stamped into it. I'm fairly new to this web-site and I'm not sure I can look back at old threads? But I will attempt to.