Kubota L3600/LA680 hydraulics problem. Need help

[teg]

squeeze the suction hose... and look for cracks.

 

[houser52]

squeeze the suction hose... and look for cracks.

teg- I looked and felt of it yesterday after I got home after dark but really didn't squeeze on it. I'm not sure if the hose is supposed to feel firm or kinda soft but it felt like hard rubber or plastic and I could mash it a little. From what I could tell though, it still looks to be in good shape with no visible cracks in the paint but was kind of hard to see everything using just a flashlight. That's something else to check out when I have more light to see better. Thanks

 

[teg]

The paint can hide the crack, IIRC, there is a coil wire inside. To be honest, if this is not affecting steering (herky jerky) I don't think it's the return hose.

"...3. Had new hoses made for hooking up the diverter and new hoses to run to a new grapple

4. Plumbing was checked and rechecked...." When you get some light on the subject, can you take photos of the plumbing? What goes where?

"...when moving the joystick all the way to the right, when dumping, it made a sound like the relief valve was opening and the tractor's rpms slowed..." First part, sounds like it should but the tractor's rpm's should have not have changed even a little bit...

 

[houser52]

The paint can hide the crack, IIRC, there is a coil wire inside. To be honest, if this is not affecting steering (herky jerky) I don't think it's the return hose.

"...3. Had new hoses made for hooking up the diverter and new hoses to run to a new grapple

4. Plumbing was checked and rechecked...." When you get some light on the subject, can you take photos of the plumbing? What goes where?

"...when moving the joystick all the way to the right, when dumping, it made a sound like the relief valve was opening and the tractor's rpms slowed..." First part, sounds like it should but the tractor's rpm's should have not have changed even a little bit...

I took these pics on Sunday before I started working with it. Not sure if these pics will help you but I hope so.
When plumbing for the grapple I followed the instructions that came with the diverter. I came off of the valve where it controlled the bucket and from there ran new hoses to the diverter. From the non energized ports(to the grapple) on the diverter I ran new hoses to the front of the loader with QDs to the grapple. It was pretty simple but routing the hoses was a challenge.

 

[Leejohn]

Shouldn't the 12v valves be open on one and closed on the other? You have the 2 hoses with the largest loop in picture 1, one hoses going to one valve and the other going to the other, Is that Right, that would also make the other 2 wrong. If the boom is working everthing before it is good, it has to be from loader valve on. It just doesn't look plumbed to me.

 

[houser52]

Shouldn't the 12v valves be open on one and closed on the other? You have the 2 hoses with the largest loop in picture 1, one hoses going to one valve and the other going to the other, Is that Right, that would also make the other 2 wrong. If the boom is working everthing before it is good, it has to be from loader valve on. It just doesn't look plumbed to me.

I had noticed what you're talking about when I looked at the pics. Everything had worked as it should for over an hour before I started having trouble but I'll double check the connections. Those hoses are hard to follow in the pics.

 

[Jeff59Va]

Yeah, hard to see the routing on the hoses, but it looks like to me that you have outlets B1 and B2 paired up, and it should be A1-B1 and A2-B2 as the pairs. But it's hard to see for sure.

I can tell which ports are labelled since I am looking at the new KBOH diverter on my desk (preparing for an install on a Kubota L3240), so I am interested in how this turns out

 

[kennyd]

Yeah, hard to see the routing on the hoses, but it looks like to me that you have outlets B1 and B2 paired up, and it should be A1-B1 and A2-B2 as the pairs. But it's hard to see for sure.

I blew the picture up, and here what I saw, looks correct to me:

I can tell which ports are labelled since I am looking at the new KBOH diverter on my desk (preparing for an install on a Kubota L3240), so I am interested in how this turns out

That was quick!

 

[kennyd]

... Everything had worked as it should for over an hour before I started having trouble but I'll double check the connections...

I wonder if one of the spools in the DValve or one of the QD's is fouled with some debris, sometimes even new hoses are filled with crap from when they cut them with an abrasive saw.

 

[Jeff59Va]

I blew the picture up, and here what I saw, looks correct to me:

Yep, I think you are correct - didn't notice the red ducking under the green...