Loader Valve Problem - Kubota B2620

[GPintheMitten]

I have a LA364 loader. The loader works like it should for up and down of the arms. But it won't dump. But it does curl up.

The problem started after hitting something on the left side with the bucket in dump position while leveling some limestone.

At first it would dump very slowly but curl up quickly. Now it doesn't dump more than about an inch then stops.

It's in the loader valve. When I have the cylinders disconnected the bucket freely moves. No oil flows when joystick is placed in dump position.

So I assume I need to rebuild the loader control valve.

Anyone done this on a B Kubota? Where would I get parts and what is involved?

Thanks.

GP

 

[J_J]

Check your QD's. Reset them.

 

[GPintheMitten]

Already did the QD check.

 

[Winmac]

It's possible the spool is broken in the valve, but I'd expect some real erratic behaviour.

 

[GPintheMitten]

Should I buy a replacement loader control valve or rebuild? What's involved in a rebuild. I've never done it.

 

[J_J]

I have a LA364 loader. The loader works like it should for up and down of the arms. But it won't dump. But it does curl up.

The problem started after hitting something on the left side with the bucket in dump position while leveling some limestone.

At first it would dump very slowly but curl up quickly. Now it doesn't dump more than about an inch then stops.

It's in the loader valve. When I have the cylinders disconnected the bucket freely moves. No oil flows when joystick is placed in dump position.

So I assume I need to rebuild the loader control valve.

Anyone done this on a B Kubota? Where would I get parts and what is involved?

Thanks.

GP

Is your spool actually moving. If it is cable operated, it could be cable related.

Did you remove the workport hoses from the valve.

Did you switch the hoses from the lift to the curl?

Some valves have an 0-ring kit.

Most valves are a precision fit and when they wear, you replace the valve.

 

[GPintheMitten]

No cables. It is a joy stick connected directly to the control valve. I didn't switch the hoses. I'll have to dig into more. The loader valve is hard to see buried under the seat area behind some sheet metal.

I'll take some body parts off and look more closely.

 

[Winmac]

As mentioned the valves can only be resealed to stop external leaks if it is damaged replacement is required.
To check spool remove the end cap opposite lever move lever a check that spool moves on the caped end.

Edit because I hit send accidentally

 

[J_J]

I am looking at a PDF of your valve now.

You can rebuild it, but will be a lot of work and parts. Parts guy says it's probably not worth it.

I don't know how to resend it as it is to large for the TBN limits.

If you call the parts guy at Messnick's, and tell them your tractor model, they will email you the PDF of the valve or any hyd you need. Phone # 877-260-3528

Are those joystick gimbels working correctly.

For instance, is both spools moving in and out of the valve about the same amount.

Thoes valve should be spring centered.

 

[GPintheMitten]

Thanks JJ and WINMAC.

It will most likely be a couple of days before I can check it out completely. The backhoe works and I need to open a trench for a water line for a frost free hydrant.