Hi new owner here of a d4d 83j series dozer. Dozer has single spool hydraulic system and was wondering what would I need to do convert it to a 2 or 3 spool valve system. Also would a d5b 8ft strait blade with tilt would work on this dozer? Currently has 10ft angle blade thanks.
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D4d hydraulic system
- Thread starter hflbz
- Start date
Ct Farmer
Senior Member
On my 83j the main valve (raise/lower) is located inside the hydraulic tank. It activates by a series of levers. You need to remove and split the tank to get to the valve. Tank has a ton of ports. The tilt valve is seperate and mounted right at the control. Except short hoses to allow movement everything is hard line with Cat style flanges.
To do what you are talking would be a huge undertaking. Basically need to make a new system.
To do what you are talking would be a huge undertaking. Basically need to make a new system.
What is the serial number on your hyd. tank?
Bob
Puffie40
Well-Known Member
Measure the center-to-center on the pivot trunnion on the blade arms. If those are close, it should work.
The other hurdle is where the hydraulic cylinders connect to the blade, but if push comes to shove, you should be able to cut them off and reweld them back onto the blade in a position that suits the D4 cyilinders. As long as the main trunnion piviots fit the machine, you can make the rest work.
I wouldn't dis the angle blade too soon though. For snowplowing or road clearing it is invaluable. If it's too floppy you just need to get the pins redone.
I'll have to look again, but my dad on our forever-apart-83j-d4-project had positioned a second spool near the main blade lift to add hydraulic tilt. I'll have to ask him how he planned to tap into the pump input.
A 2 or 3 valve system uses the same tank just adds external valves, controls and lines .
Your best bet would be find a scrapped tractor with the 2 or 3 valve system on it.
Good luck
Bob
I mainly want to put a straight blade on for having tilt option too grub out mesquite trees
Puffie40
Well-Known Member
Your other option is to look for a brush rake. They either come as a unit that pins onto the c-frame or slips over the dozer blade.
hflbz,
Did you end up modifying your hydraulics? I am in exactly the same situation, single spool D4D and would like to add an extra control (mainly for tilt blade). I like the idea of electric over hydraulic that was mentioned by Tones. Curious if you progressed at all with your machine.
Did you end up modifying your hydraulics? I am in exactly the same situation, single spool D4D and would like to add an extra control (mainly for tilt blade). I like the idea of electric over hydraulic that was mentioned by Tones. Curious if you progressed at all with your machine.