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Does a D4 7U Hydraulics Have a Float Position?

Does a D4 7U Hydraulics Have a Float Position?

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rhartwick
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I am looking at a d4 7U series machine on line. It has the single lever on the right of the operator for the hydraulics, with the pump and reservoir all contained in the front of the radiator under a grill. I was wondering if this setup had a float position? I know I looked at a D2 with a similar setup once, and it did not have a float. I am thinking of replacing my older 7J D4 with the 7U for a lot of reasons, including that the newer machine has a winch. My 7J has LaPlant-Chote hydraulics with a float position. I was just wondering if the newer 7U had the same setup.
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Tue, Jan 30, 2018 3:47 AM
dpendzic
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my 1955 7U has a float position as does my 4U D2--just push the lever all the way forward and it snaps into the float mode
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Tue, Jan 30, 2018 4:08 AM
Old Magnet
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Reply to dpendzic:
my 1955 7U has a float position as does my 4U D2--just push the lever all the way forward and it snaps into the float mode
Early versions of the #44 (4Wxxxx and 7Vxxxx s/n units) did not have the float feature.
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Tue, Jan 30, 2018 4:35 AM
rhartwick
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Reply to Old Magnet:
Early versions of the #44 (4Wxxxx and 7Vxxxx s/n units) did not have the float feature.
Thanks. The D2 I looked at must have been older, as it definitely did not have a float. I am no bulldozer operator, just using it around the farm for grading and light jobs. Floating the blade when done gives a nice finish to the job. My brother in law was in construction when I was a kid on the farm with our old D6 then, and he used to tell me an experienced operator never had to use the float if he knew what he was doing. Anyway, I always use it for finishing up, and never worried much about being an amateur.
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Tue, Jan 30, 2018 6:00 AM
MARCOTEN
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Reply to rhartwick:
Thanks. The D2 I looked at must have been older, as it definitely did not have a float. I am no bulldozer operator, just using it around the farm for grading and light jobs. Floating the blade when done gives a nice finish to the job. My brother in law was in construction when I was a kid on the farm with our old D6 then, and he used to tell me an experienced operator never had to use the float if he knew what he was doing. Anyway, I always use it for finishing up, and never worried much about being an amateur.
where you wanna use the float for??
please dont say for backblading...... haha
learn to level forward! even if it takes you weeks to practise.
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Tue, Jan 30, 2018 6:12 AM
dpendzic
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Reply to MARCOTEN:
where you wanna use the float for??
please dont say for backblading...... haha
learn to level forward! even if it takes you weeks to practise.
[quote="MARCOTEN"]where you wanna use the float for??
please dont say for backblading...... haha
learn to level forward! even if it takes you weeks to practise.[/quote]

well not every body is a perfect operator--many novices here, and I use mine all the time when grading.
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Tue, Jan 30, 2018 7:15 AM
neil
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Reply to rhartwick:
Thanks. The D2 I looked at must have been older, as it definitely did not have a float. I am no bulldozer operator, just using it around the farm for grading and light jobs. Floating the blade when done gives a nice finish to the job. My brother in law was in construction when I was a kid on the farm with our old D6 then, and he used to tell me an experienced operator never had to use the float if he knew what he was doing. Anyway, I always use it for finishing up, and never worried much about being an amateur.


I'd guess half of us on here are amateurs. I have approx. 15 mins total operating a bulldozer blade : ) but there's a good team of professionals here willing to share their knowledge and experience so I take advantage of that when possible.
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Tue, Jan 30, 2018 8:46 AM
bryani289swmi
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Reply to neil:


I'd guess half of us on here are amateurs. I have approx. 15 mins total operating a bulldozer blade : ) but there's a good team of professionals here willing to share their knowledge and experience so I take advantage of that when possible.
rhartwick,

My D4 7U has float by pushing the lever all the way ahead. Thanks.

Bryan
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Tue, Jan 30, 2018 9:00 AM
old-iron-habit
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Reply to bryani289swmi:
rhartwick,

My D4 7U has float by pushing the lever all the way ahead. Thanks.

Bryan
I use float all the time when pushing snow or cleaning up logging roads on frozen ground. I am not a expert either and probably should use it when trying to level but I'm to stubborn. Good thing I like rollercoasters. 😖uspicious:😖uspicious:
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Tue, Jan 30, 2018 9:43 AM
Deas Plant.
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Reply to old-iron-habit:
I use float all the time when pushing snow or cleaning up logging roads on frozen ground. I am not a expert either and probably should use it when trying to level but I'm to stubborn. Good thing I like rollercoasters. 😖uspicious:😖uspicious:
Hi, rhartwick.
Finishing with a dozer is a bit of an art and has a lot to do with just how sensitive your favourite rump steak is to the 'attitood' of the machine, especially with smaller dozers. Perhaps even more important than that though is the size or position of the front idlers. The D2s and D4s had larger front idlers for dozer work and smaller idlers for agricultural or drawbar work. The larger front idlers kept the front of the track under the idler down at the same level as the track under the track rollers, making the machine more stable fore and aft and thus better able to carry the weight of the dozer blade.

The bigger Cat crawlers had 2-position front idlers, high for drawbar work and low for dozer work.

More to be had if you want it. There are quite a few good operators who post here fairly regularly. Still, when all is said and done, the best way to get good at it is to PRACTISE, LOTTTTTS.

Just my 0.02.

You have a wonderful day. Best wishes. Deas Plant.

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Tue, Jan 30, 2018 3:59 PM
dpendzic
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Reply to neil:


I'd guess half of us on here are amateurs. I have approx. 15 mins total operating a bulldozer blade : ) but there's a good team of professionals here willing to share their knowledge and experience so I take advantage of that when possible.


Neil --I have at least 500 hours on machines since 1967, but they were all different machines and it is a whole new learning curve on each machine! The cable blades took quite a bit of learning as they seemed to be so much faster reaction--but the fastest hydraulic blade was oilslick's mighty D4--I think he had an oversized hydraulic pump that made that blade fly!! as OIH said-Roller Coaster!!
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Wed, Jan 31, 2018 4:35 AM
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