I’m a first time user and I have a problem with my hydraulic filter on my 580 super K case backhoe when I went to change the filter the only thing that happens is the filter spins and it won’t come off and it won’t come loose wondered if anybody else had that problem and how they solved that problem
If that's a typical spin on filter, looks just like a large oil filter, then it's usually the can spinning on the base. You can try using a chisel to crimp around the base again to pinch the rolled metal that holds the can to the base. Or even get a channel locks on the base if there's room. If the base is stuck really tight and that's why the can came loose, then you might have to remove the can and filter element with a chisel etc. and use a chisel or punch to work the base counter clockwise to slowly loosen it. Worst case it stripped the threads, but that's usually replaceable also. Messy job, but not terrible in the scheme of things.
That filter is a steel can that roll form crimped onto an aluminum head and uses an o-ring on the head to seal to the filter housing. That type of filter is notorious for being extremely stuck if they are overtightened during installation. Likely what is happening is the steel can of the filter is simply slipping on the aluminum head. Only way you're going to get it loose is grip it at the top of the filter, where the aluminum head is, using something that will crush the steel of the can and make it grip the aluminum head. If and when you do get it loose, don't overtighten it when you install the new one.
Thanks a lot now that I hear it explained makes sense I took care of lots of case backhoes over thirteen years never had that problem thanks again for your knowledge
Mine was difficult to get off too,ended up using a really good heat gun and a big pair of channel locks,good luck.
Used to see this from time to time in the quick lube shop. I made a tool that slipped into the threaded filter nipple and had two arms that would fit into the filter base holes. This was used once the filter canister housing was removed and a ratchet easily removed the stuck filter base by twisting the assembly. Some filter bases were recessed into the block or filter mounting adapter and a chisel wasn't an easy option so came up with this.
Its def just a regular screw on filter. Changed it on my super k with no problem so hopefully its just spinning within the filter itself like the guys above are saying. Also was nice to know you don't have to drain the hyd tank to change the filter. Only a small amount will continue to drip until you get it changed. I was worried Id have to drain the tank to below that filter level when I was trying to do it.
The problem with spin on hydraulic filters is they are higher pressure than typical spin on oil filters, that's why they have the aluminum head with the o-ring seal. Typical oil filters have a thick square cut seal, leaves a lot of room for squish and thereby are easy to remove, doesn't take much to overcome the friction of the seal. On hydraulic filters, with the o-ring seal, once you tighten it and compress the o-ring, you're actually screwing the filter head into contact with the filter base, metal to metal with an o-ring to seal any gap. That's why you have to be careful to not overtighten, if you do, it's like taking loose a torqued down bolt/nut connection with a slippy slippy filter wrench.