JCB 190T Hydraulic Issue

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Darcpet

New member
Joined
Jul 20, 2013
Messages
1
I recently installed a rebuilt right side drive motor but I am having hydraulic issues that are puzzling. When I first put the drive motor on it tested fine in both forward and reverse. I ran it a good deal in both directions and it seemed to work fine. Installed the track and proceeded to attempt to work the air out of the lift arm. I was not having any luck so I thought I would drive the machine outside and continue to work the air out of the system. The machine drove out side fine and I backed into a nice spot, but when I decided to move it ahead a few more feet the machine decided it was going to continue going forward and not stop. I have the machine up on blocks now and am puzzled as to why the hydraulics are behaving so oddly. When I first start the machine (after it has been sitting for a while) the drive motors will work in the reverse direction but not in the forward direction, but after the machine has been running for a while the drives start to move forward and accelerate until moving at full speed. The drives at this point will no longer operate in the reverse. At best they will slow down or stop when they are moving slowly but after the drives reach full speed they will not respond reversing the control. I have never been able to get the lift arm function working either. Anybody have any ideas? If it was just one drive acting this way I would think it was the drive I installed, but with both drives acting exactly the same I am puzzled. I should note that the machine has pilot style controls. Left hand works the drives; right hand operated lift arm and bucket. Any and all help will be greatly appreciated. Thank you.
 

Tazza

Administrator
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Dec 7, 2004
Messages
16,694
Do you have any warning lights coming on?
You say it won't lift, does it tilt? just trying to work out if you are getting hydraulic pressure or not.
I'm just wondering if there is a problem with your hydraulic pump or pump shaft. If it's broken, you will have no hydraulics. The hydraulics provide charge pressure to the drive pump that works your wheels. If you are not getting charge pressure the drive will not work properly if at all.
I assume you changed the filters?
 

billymac

Member
Joined
Oct 12, 2014
Messages
8
What did you find out about your drive issues? I have a JCB 1110T thats having some strange forward reverse problems.
 

Elibirau

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Joined
Apr 4, 2022
Messages
1
I see that this is a very old thread, but maybe there is someone that can help me with my JCB 1110T. I bought it a few months ago with a major oil leak from the camshaft seal. I took the engine out and replaced the seal. After I put the engine back in, it works fine with no leaks, but it won't move anymore. The arm goes up and down and it tilts, but no movement whatsoever. No hydraulic pressure to the joystick and to pressure to any of the lines that go out to the tracks. I tested all 3 hydraulic solenoids by swapping them around and still nothing. I checked all the fuses and relays... I don't know what else to do. I will appreciate any help. Thank you
 

Nizagin

Member
Joined
May 8, 2022
Messages
7
In some cases, the camshaft seal's positioning may cause the oil leak and damage the engine. In such a case, we can replace the camshaft seal to diminish the issue as you did. We can not do anything without understanding the proper problem. In my opinion, a good JCB repair service can help you.
 
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