rltusch

My LA463 front end loader control valve must have either a stuck spring, or a broken spring. When the control lever is moved to the left, it will not return to neutral by itself----either with hydraulics pressured up or dead.

The schematic suggests that it is the upper spring that is stuck in a compressed mode. Hard for me to believe that it is broken, as it would still have some ability to compress and return.

Question is this: I have a lot of mechanical repair experience, but have never pulled apart a control valve. Is this something that can be done with normal tools and, are there some hints on what to avoid? For example, one fellow told me that getting the detents back in were tough to do.

On the face of it, it would almost seem that I could unscrew the bottom hex head plug and pull the whole piston downward out the bottom of the control valve.

All and any experience that can be added to mine would be greatly appreciated.

shona13

Hi Mr rltusch.
Yes you can But make sure the engine is stopped ,the hydraulic system is depressured i.e. wiggle the levers back and forth.up and down etc to make sure there is no trapped pressure in there ,undo the cap and disconnect the link on the top and it will pull out as an assembly ,repair and refit .
Regards
hutch.