3810D Power steering inop

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pigpen4x4
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3810D Power steering inop

Postby pigpen4x4 » Sun Oct 13, 2019 7:47 pm

So I recently bought this 3810D and it is my first tractor.
It has a VTek loader and a Woods 750 backhoe.
The problem is the power steering doesn't assist.
The hydraulic line goes to the loader valve,
then to a prioritize(?) valve, (side of engine)
then to the rear and P/S.
The 3 point works, there is flow to and from the
power steering gear by cracking the lines.
I don't have a way to measure pressure.
The fluid that came out was clear and no foam.
How do I proceed to make the steering easy?
Thanks a million!!
PP4x4
Men that don't know him won't like him and men that do sometimes won't know how to take him.
He ain't wrong he's just different but his pride won't let him do things to make you think he's right.
WJ

Aaron
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Re: 3810D Power steering inop

Postby Aaron » Mon Oct 14, 2019 12:21 pm

That is going to be relatively hard to troubleshoot without being there. You have a lot of stuff going on with your hydraulic circuit. I'm guessing you just bought it this way (you have never seen the PS function)? Does the backhoe work? My initial guess is that the backhoe was possibly plumbed wrong (with a tee or something) and there is no pressure (or not enough) to the PS.

Would it be possible to draw up a sketch of how this is all plumbed in?

pigpen4x4
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Re: 3810D Power steering inop

Postby pigpen4x4 » Mon Oct 14, 2019 12:38 pm

Thanks Aaron
I should have mentioned the hoe has it's own
PTO driven pump.
I also should have said the PS is a gear, not a
drag link cylinder...
When I get home and on my PC I'll draw it out.
And yes, i bought it this way and should have looked into it sooner.
Now that the heat has broken I'm ready
to put it to work and of course I would like easy steering!

PP4x4
Men that don't know him won't like him and men that do sometimes won't know how to take him.
He ain't wrong he's just different but his pride won't let him do things to make you think he's right.
WJ

Aaron
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Re: 3810D Power steering inop

Postby Aaron » Mon Oct 14, 2019 1:08 pm

Those power steering tractors are practically impossible to steer if the power steering is not working (like if the engine is shut off). Are you sure the power steering is not working at all or could it just not be as strong as you would like?

winston
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Re: 3810D Power steering inop

Postby winston » Mon Oct 14, 2019 3:42 pm

there should be two outlets on that diverter valve located on the side. One outlet should go to your power steering, the other to the loader. I believe going to the loader first is not correct.
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pigpen4x4
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Re: 3810D Power steering inop

Postby pigpen4x4 » Tue Oct 15, 2019 7:55 pm

Here is a diagram of my system.
Where I drew the lines on the P/S gear may not be accurate
as in top or bottom.

When I turn the wheel with it on my trailer, it is difficult
sitting still. Off the trailer is very difficult when still.
Moving it is better of course. I didn't think to try it with the engine off.
Will try that Thursday.

PS route mine.jpg
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Men that don't know him won't like him and men that do sometimes won't know how to take him.
He ain't wrong he's just different but his pride won't let him do things to make you think he's right.
WJ

winston
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Re: 3810D Power steering inop

Postby winston » Wed Oct 16, 2019 4:04 am

Hope this makes sense.
3810plumbing.jpg
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This will likely slow your loader down some but your power steering is not getting the flow it needs.

pigpen4x4
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Re: 3810D Power steering inop

Postby pigpen4x4 » Thu Oct 17, 2019 8:29 pm

Thank You Winston,
Makes perfect sense.
You're suggesting going to the diverter first,
then to the FEL.
I'll look to see what I need for hoses and fittings.
Men that don't know him won't like him and men that do sometimes won't know how to take him.
He ain't wrong he's just different but his pride won't let him do things to make you think he's right.
WJ

pigpen4x4
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Posts: 7
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Re: 3810D Power steering inop

Postby pigpen4x4 » Sun Oct 20, 2019 7:27 pm

So working on Winston's idea, and while looking at the lines and fittings, I thought to my self
"Self, Take the hose off of the FEL valve assy. and connect it
directly from the pump to to the diverter".
So I did, and unfortunately still no assist.
The 3 point would still raise the backhoe,
but the effort to steer is the same engine running or off.
So, is there any adjustment in the diverter, or do they fail?
Men that don't know him won't like him and men that do sometimes won't know how to take him.
He ain't wrong he's just different but his pride won't let him do things to make you think he's right.
WJ

winston
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Re: 3810D Power steering inop

Postby winston » Mon Oct 21, 2019 4:48 am

At this point I would have to suspect your power steering gear box. I suppose you could put a valve in that line going back to your 3 point and slowly pinch down on it seeing if there is any effect on the steering. If so, careful not to deadhead your pump.

Added: After some thought I question my above idea, don't suppose it could do any harm but not sure it would serve any useful results.

pigpen4x4
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Re: 3810D Power steering inop

Postby pigpen4x4 » Sat Oct 26, 2019 5:36 am

Thank You Winston.
If it is the steering gear,
what are my options?
Are they available (I haven't found any yet)
or is there a rebuilder familiar with these units?

C.
Men that don't know him won't like him and men that do sometimes won't know how to take him.
He ain't wrong he's just different but his pride won't let him do things to make you think he's right.
WJ

winston
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Joined: Mon Feb 01, 2010 7:29 am
Location: North East Texas

Re: 3810D Power steering inop

Postby winston » Sat Oct 26, 2019 6:16 am

I suspect availability of a used unit will be unlikely, but you never know. I had the one on my old 2002D out and apart, ended up just replacing the top seal which is just generic. If your requires more than that you may have to fine a manual steering gear box. Likely more of them out there. I am only guessing it would fit same bolt holes. Aaron probably knows more. Attaching a couple of pictures showing a little of what you have.
Attachments
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winston
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Re: 3810D Power steering inop

Postby winston » Sat Oct 26, 2019 6:17 am

One more picture.
Attachments
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pigpen4x4
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Re: 3810D Power steering inop

Postby pigpen4x4 » Thu Dec 26, 2019 3:32 pm

So I FINALLY got a pressure gauge on it,
putting it on the diverter valve in place of the line going to
the steering gear.
It swung the needle around good
(1000 PSI?) just cranking the engine.
Good thing it didn't start as fluid was flowing
out of the line going to the gear pretty good.
So, Aaron are there any power steering gears available?
Men that don't know him won't like him and men that do sometimes won't know how to take him.
He ain't wrong he's just different but his pride won't let him do things to make you think he's right.
WJ


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