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post #1 of 12 Old 05-15-2019, 06:44 PM Thread Starter
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Unhappy Conquest power steering

Wont steer to the right unless I spin the wheel quickly to the right about 6 times then it begins to move. Another 1 or 2 time and it will go all the way right.

Left is not quite as bad but acts the same way. Fluid level is about 1/2 in the reservoir.

Had the front end jacked up and tried the steering. No difference.

Any and all help is welcome and highly appreciated.

Conquest
Mod 2691093-00
Serial N02016136986
Thanks
Ed
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post #2 of 12 Old 05-16-2019, 08:59 PM Thread Starter
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Re: Conquest power steering

So I have disassembled the dash board removed the steering wheel, seat and sheet metal below. Pushed the mower out of the garage to hose down the newly exposed areas.

Moved the wheels to the left (by hand) to wash area. Could not get the wheels to go right as hard as I tried. Ended up lifting the front over several times to get pointed in the right direction into the garage.

How does One trouble shoot the hydraulics? It seems it can be the control, actuator or trans. I haven't any idea how to go about trouble shooting.

I did end up replacing the drive belt Idler pulleys while scratching my head about the steering thing.
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post #3 of 12 Old 05-16-2019, 09:03 PM
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Re: Conquest power steering

Just an FYI if you don't know, the power steering only work when the brake is released. You are doing that correct?
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post #4 of 12 Old 05-16-2019, 10:16 PM Thread Starter
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Re: Conquest power steering

Yes, Of course. Well In this case I was pushing and steering by grabbing the front wheel and twisting left or right.

Wont steer much while running / driving. wont hardly steer at all standing still.
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post #5 of 12 Old 05-19-2019, 07:53 AM Thread Starter
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Help Re: Conquest power steering

Totally at a loss. Greased, Lubed, nothing binding. With the front end off the ground steering can be done with the engine off!

With the engine on and brake off, (front end raised) from full left to full right will go in 2.5 turns of the wheel. As it was/ should be.

On the ground driving at any speed it takes several turns of the wheel to get a few degrees to the left. I can spin the wheel to the right ( 10-20 times) without any movement in that direction!

Neither direction work in reverse travel.

No longer a fan of my local dealer.

I am an HVAC and Appliance repair guy. Fixing things is what I do. It seems the most troublesome repairs are usually my own.
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post #6 of 12 Old 05-19-2019, 10:57 AM
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Re: Conquest power steering

Looking in my repair manual there is nothing listed for checking the hydraulic pressure. It does show a torque generator for the power steering that the lines connect to, so that might be your problem. As far as trouble shooting it also does not really show too much on the steering. All it says for tractor steers hard is: 1. Steering linkage is loose. 2.Improper tire inflation. 3.Front wheel spindle bearings dry.
Which none of these is the problem that you are having. I wish there was more info I could give you, but that is all that is in the repair manual.

Legacy XL 4x4: Hardside Cab, 47" Two Stage Snowblower, 60" Deck, Front End Loader. Prestige 27HP/54" Deck, Simplicity Chipper/Shredder. Fimco 25 gallon tow behind sprayer
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post #7 of 12 Old 05-21-2019, 04:31 PM
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Re: Conquest power steering

Does your deck go up and down alright? You can drive forward and reverse ok as well? If yes, then more than likely something fouled up in the torque generator. And I believe those are "sealed" units. So it'd be an expensive repair unfortunately...
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post #8 of 12 Old 05-21-2019, 07:46 PM Thread Starter
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Re: Conquest power steering

Thanks ANDY.
All of that is taken care of. I even removed the spindles and packed in grease by hand. No joy. Unless you like greasy hands.

Mrlunchbox.
Drives wonderfully in forward and reverse. The deck is electrically operated but, yeah It works too.

I'm afraid you are correct. As much as I hate to say.

Borrowed my 1998 Green JD LX188 From my son until I can move other than fore and aft with my favorite mower.

Thank you both for insights
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post #9 of 12 Old 05-22-2019, 07:37 AM
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Re: Conquest power steering

Unless I missed something, I just looked up your unit on the parts diagram and I did not see a torque generator for your unit. All it shows is the hydraulic power steering cylinder Part #1737057YP for $251.47. I had to replace that cylinder on my Prestige due too it was leaking and is a sealed cylinder that could not be repaired. I did not have a problem with it not steering, just that it was leaking.

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post #10 of 12 Old 05-22-2019, 01:22 PM
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Re: Conquest power steering

Sounds like it's your steering orbital valve might be shot.

But first try to eliminate the hydraulics all together. Leave the mower on the ground, take the steering cylinder off or just unhook it from the front end. Then try to turn the wheels by hand like you did before, but now with the hydraulic cylinder detached. If they still don't turn then you have a mechanical problem in your front end, broken spindle, bearings are shot, etc..

If it steers just fine then there's nothing mechanical wrong with your steering, it's somehow in the hydraulic system. You can try swapping the lines on the steering cylinder, this will reverse the steering of the tractor (if you turn the wheel left it'll go right). What this will do is separate the steering cylinder from the orbital valve based on your past experiences with the problem. If you do this and it has the same problem when the wheels on the tractor turn the same way then it's the steering cylinder, maybe a bent rod. If you do this and it has the same problem when the steering wheel is turned the same way then it's your steering orbital valve, or further upstream.

Have you drained and refilled the hydro oil recently?
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post #11 of 12 Old 05-22-2019, 01:33 PM
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Re: Conquest power steering

Quote:
Sounds like it's your steering orbital valve might be shot.
I was thinking the same thing.
Not that I know for sure, only reason being is that years ago a coworker and I were having problems with a centerline paint truck. One of the paint cards was acting up, so us, being the adventurous kind, took the valve apart.
Well.....taking it apart was simple, putting it back together without a diagram showing how all the different cylindrical valves had to be timed to one another was not.
We put it back together totally screwed up and out of time, the symptoms were close to what your's are.
You'd attempt to turn one direction fast and the steering wheel would resist turning, turn slow was fine. The other direction, if you turned fast the paint card would not steer, slow and it would steer fine. Attempt to go back to the original direction and it break your arm if you weren't prepared.
Just saying :-)............Mike

Iseki TM 3160
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post #12 of 12 Old 06-13-2019, 02:00 PM
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Re: Conquest power steering

Are you sure the steering gear is not worn and needing adjustment or replacement?? I have seen this happen with same conditions you explain...twice now in 1000 hours.


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