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I'm doing a little research and clarification on the tractor mounted rototillers, primarily the Model 30 and 31 tillers. From what I know, both models are identical, other than i.d. code differences, paint colors, and decals. From what I understand is, the Model 30 tillers were the first models co-engineered by Haban and John Deere for the round fender 110's and 112's. As far as I can tell, the first year of production was 1965.

kitchen and attachments 004.JPG

As most know, John Deere introduced the flat fender or square fender line in 1968, continuing the model 110 and 112, but also introducing the new model, the 140. We will stick to the 110's and 112's on this thread. With the new line of flat fender or square fender tractors in 1968, John Deere also needed a new line of attachments. Since John Deere still had plenty of model 30 rototillers in stock, they decided to use this same model for the flat fender or square fender line, but re-tag them as model 31 tillers in order to keep up with the new line introduction. However, these "new model" tillers will require a special bracket in order to mount the old design tiller to the rear of these new line tractors, and will also require a new intermediate drive system in order to operate them.

So let's start out showing the differences or requirements that it takes to mount and operate each model. Here is a typical intermediate drive from a round fender 112, which hangs from the frame of the tractor, just below the engine drive sheave pulley:

Tiller Parts 001.JPG

This is the extra pulley required for operating the rear mounted model 30, that gets fastened to the intermediate drive above:

Tiller Parts 002.JPG

Here is an intermediate drive from a round fender 110, showing how the tiller drive pulley gets installed:

Tiller Parts 004.JPG

And these are the lifting parts required for the tractor in order to lift the tiller:

Garage and Hitch Parts 007.JPG

And this picture shows the belt guard that gets installed under the right foot board of the tractor:

Tiller Parts 005.JPG  

Now, since the new line of flat fender or square fender tractors didn't have the round fender intermediate drive system like shown above, plus had a different hitch set up, John Deere needed to come up with a way of adapting this old style tiller to the new style line. Both, the model 30 and 31 tillers had the same mounting bracket, so an adapter was designed to accommodate both designs. Here is a picture of the typical mounting bracket that was used on both the model 30 and 31 tillers:

March 2, 2015 005.JPG

The mounting bracket above would then be bolted to this adapter:

March 2, 2015 006.JPG

As such:

March 2, 2015 007.JPG

The adapter bracket would then snap on to the back of the tractor just like you would install the integral hitch. Now that you have the tiller mounted to the back of the tractor, you need to install an intermediate drive in order to operate the tiller. As with the round fender intermediate drive, an intermediate drive system was developed for the flat fender or square fender tractors, however, the intermediate drive was moved back to the center of the tractor in lieu of under the engine like the round fender intermediate drive. If you look at the picture below of my '73 110, you'll see a tab welded to the underside of the frame, just below the right foot rest:

Play Concert and Tractors 042.JPG

There is another tab like this welded on the opposite side of the tractor too. The intermediate drive system connects to these tabs, and acts as a meeting point for the front and rear drive belts. Here is what the intermediate drive systems look like:

Tiller Drive 005.JPG

There are different variations of these intermediate drive systems, unfortunately I only have this type right now.

In the next few weeks, as the weather starts to warm up a bit, I will eventually be able to locate some of the other requirement pieces needed for finishing up the installation of these model 30 and 31 tillers. The lifting system for these flat fender or square fender tractors are completely different than those of the round fender tractors, but at least the parts are shown here for quick reference until then.

Something that I would like to have in order to finish this post in the future, is a picture or two of the custom color or patio model 31 tiller, so if anybody out there can post a picture, I'd greatly appreciate it.
 

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Very interesting!!!  The ability to have a tractor mounted/driven tiller was one of the main reasons that pulled me into the GT hobby.  Altho I ended up with a later 214 with tiller this is very informative on how jd evolved their attachments and tractors.

Thanks fo the info!!!!!
 

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Discussion Starter #5
Custom Colored tillers are tricky Brian. There is only one type code that distinguishes if the tiller was issued as a custom colored or patio tiller. If memory serves me correctly, I think the code is E0700.

As far as your question about a custom colored tiller being available before the custom colored or patio tractors being released, that very well could be possible. My belief is, John Deere was thinking about or started manufacturing these tractors and accessories in late 1968. Even though the custom color or patio line wasn't released until 1969, John Deere still needed to have inventory built up to meet the demand should the sales really take off when released. It's kind of like the 80 dump carts. Although they weren't released for sales until 1965, some of the early carts were believed to be manufactured in late 1964. Again, John Deere needed to have inventory built up before the release of the product, so the dealerships could keep up with the demand of the customers.
 

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Discussion Starter #6
I'm having a hard time getting the size and model # for the belt that drives that tiller. Any help would be great thx
​I'm assuming that you are inquiring about a Model 30 tiller for the round fender 110's and 112's? If so, the part number for the belt is M41140. As for the belt length, I'm going to guess here and say it's around 60" in length. I went through all of my parts manuals, and none of them have the size listed. I believe when I checked my dealership last time, the belt is no longer available through Deere, but I'm not 100% certain. If you give the part number to your local Deere dealer, they should be able to give you the size and length of the belt.

If you are referring to the Model 31 tiller for the flat fender 110's and 112's, the part numbers are as follows:

Primary Belt - M43489

Secondary Belt - M43490
 

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Which Model of tiller do you have, the 30 or 31? Could you post some pictures of your set up sometime, if you don't mind? Would be good information for others to see how it attaches to your tractor. I'd appreciate the help if you're willing to share.
 

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I've been looking for a rear tiller and lift link rod for my 74 JD 112 . Around here they seem to be scarce or way over priced. Thanks the info was helpful and I will use it in my search.
 

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Just picked up a 30 Tiller that was on CL this morning. Really good shape,tines a bit worn but sheet metal is very good for age. Thanks Elfman for all the excellent info. Have been trying to track one down for awhile just refused to be ripped off for a beat up unit. Now the decision on weather to repaint/restore right away or not.

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Looks to be in nice shape Kyle, Congrats! It appears as though you will be mounting this to your 112? Glad to see that you have the turnbuckle for the tiller, as these are usually missing due to either getting lost or guys just not wanting to part with them. I assume you have all of the other lifting parts like the cable, roller with bracket, and the finger piece that comes through the tractors hitch? What ever you do, be sure to keep that belt in good shape, as they aren't available through Deere anymore. 
 

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Yes I have all of the little parts like that but only one set. At this point not sure which RF will get it but the price was right. Would love to get it on the grumpy RF 112 if only it would co-operate with me. YEASH! That one just keeps frustrating me! Thanks.
 

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Oh, I just assumed you were installing it on your 112, as the intermediate drive with the tiller drive pulley shown above is one for a 112. I guess you received that intermediate drive with the tiller package? If so, big score for you, as finding the tiller drive pulley is hard to do, unless you opt out for one of the reproductions that are now being made. 
 

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I still may do that. Not sure.Right now its sitting on a cart in the garage as I want to finish the 208 up then move on to the next project. If I get stuck I will hollar at ya for some help!! Thanks
 

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a question about the intermediate drive for mounting this on my 74 112. does it particularly matter which one I use for this unit. Tillers are something I am still learning about by reading and looking but have not ever hooked one up. I worry a bit about the electric lift and the tiller but think its just that,worry. With the weather I have not done much more than work but there are a few drives on Ebay that I've been watching so I was hoping maybe I could just collect the correct parts awhile and when I am able to bring the resting units home from storage I could get to this project . Thanks for the help everyone.
 

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Kyle,

You will want to look for the style that I have shown in the last picture. If you are wondering or worried about your electric lift being able to lift the weight of the tiller, relax, it will fine as long as your electric lift motor is working as it should. 
 

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Ok thanks for the info I appreciate the help once again . I was pretty sure that is what I needed just like to double check. I had just found what I believe to be the correct lift rod for underneath the seat pan as the first one I got was wrong so I need to install that yet. The tractors hanging out in storage up the road for winter so I will not bring it home for atleast another month so I can do that first . 
 

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Finally got it going today. Still need to hook up lift linkage and go over the tiller itself  but feeling good about finally getting it hooked to something . The 67 RF known as the Junk Yard Dog is now the proud hauler of this unit. I'm open to suggestions but be kind . I know Troy replace the seat on the tractor. I'm  working on that one friend has one I'm trying to get its in good shape.

View attachment IMG_1542.MOV
 

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Looks good Kyle!! 

After reading back through my initial post, I forgot to update this with added pictures. I guess I have some work to do, huh?  :(
 
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