@Spike188 The oil that came out of the valve, which, by the way, was quite a lot, was very clean. All the spools on this one move in both directions easily and the spring brings the spool back to center. I cannot feel on any of the spools a float of any kind. Is there?
I'm very tempted to open it up and replace all the o-rings, just to know it's been done. On the other hand, it seems fine, and the only risk I see not doing it now is the $30 shipping I'll pay if I do it later if necessary. Really on the fence on this, as you can see.
@Eugen you unit appears to be weather degradation where mine was abuse. I would inspect the exposed areas of the spools. If they show little or no signs of rust I would be inclined to leave them alone. But now that the piping is easy to remove, it is prime time for service.
Spike188 wrote: ↑Wed Apr 12, 2023 9:37 am
@Eugen you unit appears to be weather degradation where mine was abuse. I would inspect the exposed areas of the spools. If they show little or no signs of rust I would be inclined to leave them alone. But now that the piping is easy to remove, it is prime time for service.
Very little rust if any, on the exposed part of the pools.
Here's the list of o-rings and seals ordered, and prices in CAD from hercules, to give you an idea. To my best ability, the list is complete and enough to refresh the following cylinders: boom, dipper, bucket, swing, and stabilizers. I chose all o-rings buna-n durometer 70 (series 568 on hercules). All the back-up rings buna-n durometer 90a (series 574). For wiper rings I chose MCN (metal clad rubber), which is what I think was installed originally.
Once the parts arrive I will install them and at some point will test.
The bottom of one of the stabilizers must've stayed dipped in mud for a long time. All parts were welded together by rust. The pin did not budge with heat and banging. Fortunately there was enough clearance to cut it off with the sawzall. The rod has deep rust on a length of about 3" from the tip. Might need to replace the rod.
Both rods have rust damage on the ends. Looks like one had been repaired, is longer and a lot more rusted than the other. Would be nice to replace them. @Spike188 and @FUTZ do you have any suggestions where I could find replacements?
New ones can made from chrome shaft . I know Western Hydraulics does it in our area . There maybe others shops as well . Call around , you maybe able to get it done cheaper in the big city .
DavidBarkey wrote: ↑Thu Apr 13, 2023 11:06 am
New ones can made from chrome shaft . I know Western Hydraulics does it in our area . There maybe others shops as well . Call around , you maybe able to get it done cheaper in the big city .
It may be easier and less expensive to replace the whole cylinder. Not necessarily, but maybe. I'd measure the cylinder size and stroke and look them up on Ebay and SurplusCenter. The affordable cylinders are kind of hit and miss for available sizes, but you may get lucky.
Bob
"Never be afraid to try something new. How hard can it be?"
