Loader valve issues

skramer360 · Jun 21, 2023

I have a New Holland TC30 with an Ansung NTC30 loader on it. I bought them separately, not that it matters. When I got the loader the float function on the loader worked fine. I have noticed that the float no longer works and the raise and lower function is more jerky than it used to be. The boot around the lever is bad, but it does get stored inside now. I have a parts breakdown from Ansung for the loader, but it only lists the valve as a complete unit. Can I take the valve apart, is it likely some "O"rings that are bad? What should be my first step.

oldnslo · Jun 21, 2023

Two different possibilities come to mind potentially causing the stiff movement problem.
1) swivel or ball joints between the joy stick and directional valve spool require lubrication. These are under the rubber boot.
2) Detent and centering spring assembly are full of crud and or corroded. This is located at opposite end of the spool under a can or cover. Be very careful if you remove this cover since there may be loose parts that can fall out. There may be a drain hole in this cover that you could use to spray some penetrating oil onto this assembly without taking anything apart.

skramer360 · Jun 29, 2023

I wanted to follow up. Last night I took the cap off the loader valve and there was indeed moisture and rust on the detente balls, cone and the sleeve that they fit in. I cleaned them all up and rotated the cone and sleeve because there was some wear from the rust, lubed it and it works perfectly now. I'd like to find a parts breakdown for the valve so I can get a new cone, sleeve and balls for it. I didn't see any obvious numbers on it anywhere. Is there a place I should look in particular?

rScotty · Jun 29, 2023

skramer360 said:
I wanted to follow up. Last night I took the cap off the loader valve and there was indeed moisture and rust on the detente balls, cone and the sleeve that they fit in. I cleaned them all up and rotated the cone and sleeve because there was some wear from the rust, lubed it and it works perfectly now. I'd like to find a parts breakdown for the valve so I can get a new cone, sleeve and balls for it. I didn't see any obvious numbers on it anywhere. Is there a place I should look in particular?

If you find a source, be sure to post it. I don't remember ever seeing separate parts listed for a hydrualic control valve.
rScotty

oldnslo · Jun 29, 2023

Skramer
If there is a nameplate on the valve? There is a chance you might be able to get those parts from the valve manufacturer.

skramer360 · Jun 29, 2023

I did find out that it is a Besko HDM03/2 valve, and even found a parts breakdown for it, but I can't find anyone online that has any of the parts. This is the listing I found online somewhere.