Aloha! I’m new here, so I hope I am able to post on an old thread and still get a response? If not, I’ll create a new post if needed.
We are having a similar issue with our 420E, as none of our rear hydraulics are working, but the front loader bucket still works. We replaced the rear control lockout switch, but that made no difference, so we were thinking it might be this solenoid issue? Is this same as the “valve body” where all the lines connect to? I apologize if I’m not using the right terminology, but I think my punctuations are on point? (Ha!)
I’ve attached two photos, the first is the solenoid/valve body, we just changed the four outrigger lines that connect to the left controller, because a couple of them blew after we rebuilt the cylinders. That’s when we noticed the creep on the extendahoe, and were able to retract it just once, then none of the rear hydraulics worked. So, we were thinking it’s either the controllers, or the solenoid?
Your guidance and assistance is greatly appreciated. Mahalo!