D68U Cable Blade conversion to Hydraulics

Single cylinder blade has been applied to some Cat models but never seemed to be all that popular. Can result in significant stress on the push arms and blade frame.

Not an Expert ,So stand to be corrected . If you plan to mount the ram where the pulley blocks are now , remember it is only designed to have pressure put on it lifting the blade.Putting a ram there you will be able to push the blade down,and i would think put strain on the nose cone that it was not designed to have . You would want to look at a nose cone designed from Hydraulics to see where they mount and where the extra strength has been put into it .Current nose cone won't be designed to mount the hydraulic pump etc

Hi if you lived in NZ I could give you a hyd front end as have one sitting at the work shop could send it fast post $$$$$$$$

Hi if you lived in NZ I could give you a hyd front end as have one sitting at the work shop could send it fast post $$$$$$$$

Hi there

Thanks for the response. Grateful if you could expand on what is involved in "a hyd front end" .
Cheers
MOC

other things to be considered are if you only have one ram the pump needs to be only half the size as only half the amount of oil has to be shifted
It is pretty hard to find off the shelf hydraulic pumps of enough capacity to pump the oil requirements needed for these conversions to work to the correct specs so the less oil needed the easier to find a pump and spool valves ect

They do work ok with only one ram in the center some other brand blades were made new like that and worked fine I have been told there is less stress with only one ram than two I have never been able to see how that is so but doesnt mean its not right

Paul

Hi, MOC.
Welkum too ther 4um.

Yes, it is possible to do what you are considering but there are some things to consider as others have mentioned. The cable hardnoses were only designed to take weight pulling down on them Adding upward force to the mix, especially in the centre as would be the case with one ram, would be something outside the design parameters of said hardnose. Further, that centre section would be the weakest point of the whole hardnose when it comes to upward force exerted on it. This is not to say that it can't be done but I do think that some consideration needs to be given to beefing up the top of the hardnose to enable it to better withstand any upward loadings on it - 'cos there WILL be upward loadings once you have downpressure capability.

One ram in the centre would be getting asked to do the same work that twin rams on either side would be doing so would likely need to be somewhat stronger, which may equate to a bigger bore, or it may mean a higher pressure system. I suggest doing some homework - and asking questions here 'cos there is a LOTTTT of wisdom and experience to be had here just for the asking.

Would it be a rude question to ask what sort of problems you have been having with your current cable control? Again, a LOTTT of experience and knowledge to be had here just for the asking.

Just my 0.02.

I would consider buying a complete hardnose off of a junked out 9U and installing it on your tractor. We did that with my 3T D-7 and made a good dozer into a great one.

Hi, MOC.
Welkum too ther 4um.

Yes, it is possible to do what you are considering but there are some things to consider as others have mentioned. The cable hardnoses were only designed to take weight pulling down on them Adding upward force to the mix, especially in the centre as would be the case with one ram, would be something outside the design parameters of said hardnose. Further, that centre section would be the weakest point of the whole hardnose when it comes to upward force exerted on it. This is not to say that it can't be done but I do think that some consideration needs to be given to beefing up the top of the hardnose to enable it to better withstand any upward loadings on it - 'cos there WILL be upward loadings once you have downpressure capability.

One ram in the centre would be getting asked to do the same work that twin rams on either side would be doing so would likely need to be somewhat stronger, which may equate to a bigger bore, or it may mean a higher pressure system. I suggest doing some homework - and asking questions here 'cos there is a LOTTTT of wisdom and experience to be had here just for the asking.

Would it be a rude question to ask what sort of problems you have been having with your current cable control? Again, a LOTTT of experience and knowledge to be had here just for the asking.

Just my 0.02.