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| Construction Equipment Tech Hydraulics, Electronics, General Engineering, ect in constr equip |
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#1
08-03-2012, 05:26 PM
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Hydraulic build for John Deer 850J dozer
Hi just thought I'd post a few pics of some hydraulic tinkering which will hopefully end up in a dozer build. Thanks to the many other members who have posted info on hydraulic systems. Tolerances at the moment are a bit hit and miss so I'm only going to make the one cylinder for now and do a bit of testing before I end up with a handfull of leaking cylinders.
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#3
08-05-2012, 02:42 PM
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Re: Hydraulic build for John Deer 850J dozer
I spent a bit more time on the build today. Resigned myself to the fact that this is going to take some time! A little more than I thought before I started. I'm going to blank the second function off and carry out some testing with the valve that is almost completed. Have to wait for some hose and a tap to arrive in the post.
Next on the list is a pump. Can anyone help me with the gear sizes of the smaller end pumps? OD and H. What RPM are the gear pumps run at?
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#6
08-07-2012, 12:53 AM
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Re: Hydraulic build for John Deer 850J dozer
gear size 10mm
thickness approx 3mm rpm upwards of 6000 10 to 15 bar
__________________
Sharing knowledge is one thing that defies basic arithmetic logic --- the more you share, the more you get! Joe
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#7
08-04-2013, 10:24 PM
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Re: Hydraulic build for John Deer 850J dozer
Hi, can anyone help me with what a "realistic" speed of a 14.5:1 bulldozer should move at in meters/min or feet/min. I will start a new thread of the build under construction equipment soon but will keep this one for random tech questions
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