Recent content by BeezFun

Thanks for the ideas. I do have a piston ring compressor but it's too big. I ended up cutting some thin shim stock and using it like an expanding tube inside the barrel. I butted it right up against where the finished barrel size begins so it acted like a ramp. Went in fairly easy but then I...

I'm having trouble getting the new seal to enter the barrel on this single acting cylinder. I've rebuilt double acting cylinders before and the seal is tapered in a way that made it easier to get started. Is there any trick to doing this?

Here's the nut now that I took it off. Those slots closed up about .005" after I took it off, so it's some kind of lock nut although I still don't see how it works. Maybe they bent those wings slightly after they cut the slot to make it bind up on the thread. It was so hard to get off I used a...

Got it all apart, what is the purpose of the diagonally machined slot in the retaining nut on this rod? All it looks like it does is make the nut weaker. Seals were cracked from age but the cylinder and rod look like brand new. This cylinder was taken apart before I owned it, so the seals are...

I don't have any way to protect the surface, other than some painters tape. The seal between the valve body and cylinder is shown in the parts manual as a "dowty washer" which is some British thing, and a Banjo bolt with what looks like two crush washers. I'm thinking I'll take the hose fittings...

In your experience is it better to remove the 4 hose fittings from the check valve, or remove the check valve and leave hoses attached? I'm thinking it terms of the likelihood of having leaks or issues putting it back together.

Yes, that's a good idea. Surprisingly I did find a brief description in the manual about removing the two main cylinders. It says the one I'm working on can be removed without any additional support. The other cylinder requires a forklift or something to support the upper boom while the cylinder...

Yes, the bottom of the cage rests on a rubber pad, and the frame at the opposite end also rests in a cradle pointed to in photo below. I would feel better if that cylinder flopped around a little when I try to move it. It feels like it's being held very tight and I won't know for sure until I...

A single acting cylinder on my lift is squirting oil out the vent, so I assume the cylinder seal is bad. The check valve has 4 lines coming into it, I assume because it's synchronized with the leveling cylinder on the basket. My question is what is the safe way to relieve the pressure on the...

An accumulator is not listed in the options shown for my machine. I've left a couple messages for tech support to call me but haven't heard back. I want to ask them about some of this stuff that I can't understand. For years the same guy always answered the phone on their tech support line and...

I stumbled on this definition of "dump boost", which is one of the things on the logic diagram we didn't understand. How is this different than the pump dump logic? "In the context of hydraulics, dump boost refers to a system where a valve is used to quickly relieve pressure from a system...

Yeah, it's impossible to debug the board because they sprayed the bottom of the board with some kind of insulation to weatherproof it. It's also a multi layer trace so there's no way to figure out which terminals go where. I have the data sheet on the relays but it doesn't really do any good...

The plot thickens. The flow switch works properly, which means RL7 should be deenergized. But even with the flow switch disconnected from the circuit, connection point 115 in the diagram has 12v, which is inconsistent with the logic diagram. So the problem is starting to look more like a problem...

And that is the problem, RL7 is energized, which is preventing RL8 from being energized. I ran out of time working backwards to see why it's being energized but I feel like I'm closing in. I have a lot of time tomorrow, crossing my fingers.

Yeah, that was the first thing I did because I had nightmares imagining what a new pump would cost. Both the contactor and motor work fine when I jump them. I identified right away the problem is relay 8 isn't pulling in, I just haven't been able to figure out why. I think the help you provided...