Difference between D and DA on TC models?

[LowerSlower]

Hey guys, its probably in a thread, but my search didn't lead me to it. Anyway, a real easy question here for most, but not for me, cause I bought my tractor used from a Deere dealer. What is the difference between the D and DA in the TC series? Is it a transmission thing or something else. My guess is the hi/lo switch on the loader controller? Just curious.

 

[SevernDH]

I am curious as well. Have dug into it a little bit with no luck, but nothing I would call an extensive search yet. Let me know if you find out (will do the same).

 

[MikePA]

I have a TC25D and if memory serves me right, the 'D' got you the following on Class II Boomers. The Class IIIs might have been different.

- HST
- Folding ROPS
- Adjustable (for weight) seat with swivel.
- Tilt and telescope steering wheel
- Tool box
- Different instrument panel (I think)
- Deluxe 3ph linkage

 

[jinman]

The "D" stands for "Deluxe," and the "DA" stands for "Darn Awful" lights.:laughing::laughing::laughing:

Actually, the "DA" stands for "Deluxe" with "Advanced" features, I believe. The DA model tractors were a major styling change that included the new lights and changed hood. It also had some changes to the electrical circuits with a new controller/timer for the glow plugs and a change to some relays. The rear lights were moved from on top of the fenders to mounted on the ROPS. Also, the handrails were redesigned and moved to the tops of the fenders, and the operator seat was changed slightly in color and style. The battery was changed so it didn't outgas into the radiator like the old one. The HST models have a bigger return spring to help prevent the sticking pedal problem. There are also some changes to the instrument panel and some of the switches for turn signals were changed.

There might be some more minor changes I've missed, but I don't think there are any major changes to the internal powertrain or any of the hydraulics. The rabbit/turtle function on the joystick has been around since the "D" models were introduced. My "D" model tractor has that and I love it. Oh yes, speaking of joysticks. I have a very long thread called "No Joy Joystick" that chronicles the sorry design of the early joysticks. With the DA models, New Holland improved on the joystick mounting design and eliminated the problem. I've retrofitted my tractor with the new part and it works great.:thumbsup:

EDIT: Reading MikePA's post made me realize my comments were slanted toward the Class III tractors. The Class II tractors don't have the rabbit/turtle function.

Also, the gear model tractors just used to be "TC" and a number. After the styling changes, they changed to add the "A" on the end. For example, the TC40 became the TC40A. Like the deluxe models, I think this change came about with the 2004 year model tractors.

 

[IH3444]

So right Jinman! I just about hate the lights on my TC48. I think they are completely over the top, and unnecessary. Terribly expensive if you break one also. Massey, and other brands have done a much better job, for much less money. I'd rather have just the "D" style. About the only fault I can find so far with my machine. Doesn't have to be aerodynamic.....it's a tractor. Also miss the additional clearance with the rear fenders with the older sheetmetal fenders of the 1920, 2120 NHs.

The "D" stands for "Deluxe," and the "DA" stands for "Darn Awful" lights.:laughing::laughing::laughing:

Actually, the "DA" stands for "Deluxe" with "Advanced" features, I believe. The DA model tractors were a major styling change that included the new lights and changed hood. It also had some changes to the electrical circuits with a new controller/timer for the glow plugs and a change to some relays. The rear lights were moved from on top of the fenders to mounted on the ROPS. Also, the handrails were redesigned and moved to the tops of the fenders, and the operator seat was changed slightly in color and style. The battery was changed so it didn't outgas into the radiator like the old one. The HST models have a bigger return spring to help prevent the sticking pedal problem. There are also some changes to the instrument panel and some of the switches for turn signals were changed.

There might be some more minor changes I've missed, but I don't think there are any major changes to the internal powertrain or any of the hydraulics. The rabbit/turtle function on the joystick has been around since the "D" models were introduced. My "D" model tractor has that and I love it. Oh yes, speaking of joysticks. I have a very long thread called "No Joy Joystick" that chronicles the sorry design of the early joysticks. With the DA models, New Holland improved on the joystick mounting design and eliminated the problem. I've retrofitted my tractor with the new part and it works great.:thumbsup:

EDIT: Reading MikePA's post made me realize my comments were slanted toward the Class III tractors. The Class II tractors don't have the rabbit/turtle function.

Also, the gear model tractors just used to be "TC" and a number. After the styling changes, they changed to add the "A" on the end. For example, the TC40 became the TC40A. Like the deluxe models, I think this change came about with the 2004 year model tractors.

 

[MikePA]

Hey guys, its probably in a thread, but my search didn't lead me to it. Anyway, a real easy question here for most, but not for me, cause I bought my tractor used from a Deere dealer. What is the difference between the D and DA in the TC series? Is it a transmission thing or something else. My guess is the hi/lo switch on the loader controller? Just curious.

I checked your profile and see you have a TC35, which is a Class III, so jinman's post would apply to you.

 

[SevernDH]

Thanks, jinman! The way they do the models is starting to make more sense to me now. I was getting hung up on the automotive paradigm, since the model year seems to be commonly listed when you look at dealer ads.

From your description, it sounds like feature changes go with the model numbers and the year makes no real difference.

Thanks again!

 

[jinman]

Just think how confused people will be in about 5 or 6 years when they see TC40, TC40A, TC40D, TC40DA, T2310, and Boomer 3040. When somebody asks the question in the future, I'll just tell them that the old number is a tractor and the newer number is a tractor on drugs. No way am I going to try and explain the differences and why NH changed the numbers.

 

[LarryD]

Just think how confused people will be in about 5 or 6 years when they see TC40, TC40A, TC40D, TC40DA, T2310, and Boomer 3040.

Hey jinman,
If some of the parts are interchangeable these tractors could end up in a country song, kinda like the Johnny Cash Cadillac. :laughing:

 

[LowerSlower]

Thanks guys. I didn't realize there was a year difference between the two, I thought the A was an upgrade or something to the plain D. I never knew the details because I didn't follow the line for too long, though I now know the equivalent to the TC40DA is the 3040 and last model it was the 2010. Strange way to run similar product.