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Rear blade advice..

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gn

10-17-2000 06:52:47




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Yesterday, I started to dig out a spot to lay some cement, about 20 X 20. I was using my 140 with a rear blade. I put a wheel weight on it, but it still wouldn't go deep into the wet clay I got. It would dig a little, then the blade would just start skimming across the top. A small bobcat was struggling too, but he managed to slice through it like cheese. Is there any way to make the rear blade bite better, so I can remove 3-6 inches at a time..? I don't like to be embarrassed by a little pipsqueak bobcat. Right now, the weight and the down hyraulic pressure are what keeps it to the ground. Is there some adjustments.??

Also, the throttle lever kept popping back to idle under load. Is there a way to repair the throttle so it stays still when the governor kicks in...a new spring or something.??

Thanks in advance..gn

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Chances R

10-18-2000 00:16:53




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 Re: rear blade advice.. in reply to gn, 10-17-2000 06:52:47  
You are probally already doing this , but if not: I would suggest making your top link longer therefor changing the angle of the blade to the point it will force it self to go in the ground deaper.



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marvin

10-17-2000 16:02:14




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 Re: rear blade advice.. in reply to gn, 10-17-2000 06:52:47  
The throttle on your 140 is probably like the throttle on the super a that I have. On the lever arm that you move back and forth is a tang that sticks out to the right when viewed from the seat. The plate that it sits next to has a set of notches that the tang from the lever will sit in. Both the notches and the tang should have sharp edges on them to hold the throttle at a given setting. You can clean up the edges on the plate by using a triangle shaped file. Sharpen it like you would a saw blade.
Make sure that the bolt holding the throttle lever is tight.
If the tang is worn and rounded off then you will need to take it off and file a sharpe edge on it again or build up the area with weld and then sharpen it.

One of the other suggestions to break up the ground first is a good idea. I have taken a plow to an area first and then started pushing and pulling the dirt or rocks. Anything that will break up the surface some will help. It does not have to be broken up too much, just enough to get the blade below the surface and start cutting.
Good luck and post some pictures of your project. Love to see those old tractors at work.

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george

10-17-2000 13:31:19




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 Re: rear blade advice.. in reply to gn, 10-17-2000 06:52:47  
GN:

The problem is the set-up. A rear mounted blade is supported such that is is being pulled through the soil ( or across as the case may be) rather than pushed through the soil like in the case of a dozer. You can turn your blade around and push, although tractor tires do not grip well in reverse. A center mounted grading blade or front mount blade will work even better. Unfortunately, a rear blade is not the tool for the job. Another trick is to loosen the soil first. I run a set of spring time cultivators over the area and then you can move the loose dirt. A small skid loader is ideal though...it has a low center of gravity and can really push/dig.

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H MN

10-17-2000 12:47:42




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 Re: rear blade advice.. in reply to gn, 10-17-2000 06:52:47  
hi gn: Can you adjust the angle of the blade? The angle and sharpness of the cutting edge helps if ya don't have brute weight and power. The top of the blade should be further back than the cutting edge. Sorta like the blade in a wood plane which "shaves" the wood rather than "scraping" at a 90 degree angle. OK? Wet down the area the day befor helps too. I also have tilted one side down just to force that side down..half a cut is better than nothing? harvey

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Tom W.

10-17-2000 09:58:06




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 Re: rear blade advice.. in reply to gn, 10-17-2000 06:52:47  
Not sure about your tractor, but on our H, I went to the IH dealer and got a new bolt for the throtle lever that bites into the notched. That little tooth comes out and is about $5 to replace



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gn

10-18-2000 06:24:01




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 Re: Re: rear blade advice.. in reply to Tom W., 10-17-2000 09:58:06  
Thanks gents...as always, your advice shows the high level of expertise and experience we got here on this page..I'll sure enough take it..gn



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