4115

bglombowski · Jan 3, 2006

Happy New Year all,
I have a JD4100 (20hp) that has a 54" blade with a John Deere extension kit that makes it 72". It extends the width and the height and has a new moldboard along the bottom. I use it only for snow. There's enough horsepower for more width, but I don't want to put any more strain on the angle cylinder.
Brian

jcmseven · Jan 3, 2006

One more thing I thought about. If you wanted a JD blade, you might want to find out whether you can fit one of the 60" blades for a 1400-1500 series front cut JD onto the bracket for your 4115. I have seen one of those blades and it is very well made, and strong enough for some gravel work too. It is a little taller than the 54" and some of the aftermarket choices, and if you or your dealer is mechanically inclined it might not be too hard to make it work. I think a 60" would be the perfect size for your 4115, and although it would handle bigger, you could still maintain manuverability.

John M

bigpete · Jan 3, 2006

Hi, Brian. A JD extension kit? Do tell! I would love to get a little more out of my 54" blade. Do you have a part number?

bglombowski · Jan 4, 2006

Hello bigpete,
I'll get that info for you later today when I get home. I bought the tractor with the blade as it is, so I don't know the details.
Brian

bglombowski · Jan 4, 2006

bigpete,
Regarding the extension kit for the 54" blade, I have a single sheet of paper from John Deere Horicon Works dated March 1988 called:

Product Services Information
Installation Instructions

Additional text at top of page says:

M78982 (MAR88)
TY13028 EXTENSION KIT
For 365, 375 and 380 Utility Blades
On 650, 655, 750, 755 and 855 Tractors

As I read the installation instructions, it says:

NOTE: Side extensions are designed for installation on blades equipped with blade top extension.

So, apparently I have two kits installed. There is a 7" X 54" extension across the top and two 8" side extensions (one each side). Whoever did the installation added a "new" moldboard (cutting blade) along the bottom. It adds about 3". It's good for the fact that it ties the original blade and the extensions together, but it's bad for the fact that it uses up 3" of the available hydraulic lift.
Another drawback to this extension kit is that the 1/4" thick extensions overlap on the front side of the original blade thereby creating a step that prevents the smooth movement of snow along the face of the blade.
I hope this helps. Let me know if you want more info. Pics? Scan of the document?

Later,
Brian