information on cat pull ripper

not familiar with that number, could it have been a 3D or 6C?

opps! mis read that it was a grader not a ripper sorry.

6D947 is a #18 ripper

6D947 manufactured 1950. Last made was 6D1554.

Hi, Jbernd56.
I wouldn't worry too much about the extra two shanks. If you have a tractor that will pull it fairly comfortably with three shanks and then you put in the other two shanks, you may find that you would need TWICE as much tractor pull it. It is not only the strain of pulling the extra two shanks that you have to figger into calculations. It is also the power needed to force the ripped material through the reduced spacings between shanks.

If you do want the material ripped finer than the three shanks will do it, you can always straddle rip so that your three shanks are running in the gaps left in the previous pass.

If the scrappers have 'lost' the sheave block that they cut off, it shouldn't be too hard to adapt a block with the same number of sheaves from maybe a dozer or an old cable scraper to do the job.

Just my 0.02.

While I am totally not an expert, I am wondering if the five positions are really for using three shanks or two. It seems like I saw that information somewhere in the far distant past. Again, I am just guessing but it is at least food for thought...:noidea:

Hi, Walt D7-3T.
Like you, I yain't an expert but I think you're right. I can't remember ever seeing more than three shanks in any of them and the five slots gave the options of different spacings and one,two or three shanks.

just my 0.02.

Here are the specs......

As always, ask and you shall receive. 👍:grouphug: That makes sense about the ripper shanks. The cable sheave brackets are totally rebuildable . Other than that the thing is in pretty good shape. Once again, thanks to the collective brain power of everybody involved.

John that pic looks familiar. I pulled one like that on the Kansas turnpike in 56 with a slide bar D8. As I remember it only had one shank.

We were working by the hour u no?? Now don't go countin up to see how young I might b.

C u...............Claney