Barn fire spool

[Nicb7800]

Hello all
I am recently starting a project with a b7800 kubota tractor that was involved in a barn fire. My first question is are there seals available for the control spool for the front end loader? I was able to get the rods out but there appears to be a couple of seals down on the bottom were the springs are located. Any thoughts would be greatly appreciated. Thank Nic

 

[J_J]

Don't think there are any seals under the caps.

This is a Prince LV loader valve for reference only.

http://www.princehyd.com/Portals/0/products/valves/LVManual.pdf

 

[Leejohn]

I also have a B7800 and there are 3 control valves for the LA402 loader. You need a ser # off of the loader and parts list. They all 3 have seal kits that you can get.

 

[tlbuser]

Don't think there are any seals under the caps.

This is a Prince LV loader valve for reference only.

http://www.princehyd.com/Portals/0/products/valves/LVManual.pdf

Number 3 in your example. There are o rings between the spool(s) and body.

 

[olde man]

there are seals located at each end of the casting usually an o-ring on the cap end they are under the spring and usually in a counter bore or groove in the casting

 

[J_J]

Under the cap, there usually are no o-rings, The last o-ring close to the bottom of the spool if that particular valve uses o-rings.

Some valves only have a few o-rings, and other valves have quite a few o-rings, so it depends on what the tractor has for a valve.

Maybe only part of the valve got burned.

If the valve did get substantial heat, then all rubber parts should be replaced, and the mono-block valve check for warping.

 

[Nicb7800]

Thank guys I will get the serial number of the loader and start to piece it back together?

 

[Leejohn]

If for some reason you can't get the newest parts list I can give you the kit # from a older parts list, after you get the ser. #. All they have to do is put the old # in and the new one well come up.

 

[olde man]

before you buy any parts clean and check the bores for scoring if there is any significant scoring replace it, or if the spools don't slide in and out smoothly (no tapping them in or out of the bore)

 

[olde man]

generally if they do slide in they're straight but to be sure spin them in the bore

 

[Nicb7800]

Hey guys

Thank for all your input. I put them both back in and all is good until a try and turn them. I can turn them both with a small crescent wrench but it's not going to happen with just my hand. Also I cleaned up the rods with a little bit of emery cloth and the polished up nice. Is there any way you would no to clean the baked on oil off of the spool itself? Just wondering I cleaned it out and soaked it over night in my friends engine shop soda tank stuff. It came out nice and clean on the outside but the inside of the bore is smooth but looks a little dirty????? What do you think? Thank again Nic

 

[olde man]

what you're seeing is the oil that had impregnated the cast and then got hot causing a "glaze". if you have no scores and your spools are straight you should be ok. i didn't see anywhere a mention of checking your relief valve seals.pending on the type of valve they could be simple as o-rings ang back-ups assuming you're valve is equipped with one, be sure to check all orb plugs and fittings to see how they fared rule of thumb is to replace all rubber in this situation. hopefully all works out for you. if you have a relief valve and you're not comfortable checking it let someone who is they are pretty important and easily fouled up pending on the complexity.

 

[Nicb7800]

Thank for your reply, and that makes a lot of sense about it being glazed. I will do a little more research this weekend and let you no what I find, but thank again for your time. Nic