Tool for removing end cap hydraulic cylinder

Mtjohnso · May 21, 2019

Have a Bobcat X320 excavator and I need to rebuild the main lift cylinder. The end cap on the cylinder has 2 small pin holes, maybe 1/8 or 3/16 diameter. I saw online some tools called pin wrenches that look like the correct tool.
What is the correct tool called?
I have read of people having to use pipe wrenches with 6ft extension on them to get the end caps loose. So I assume that what ever I get that fits into those 2 small holes has to be strong enough to handle a lot of pressure to break things loose
Recommendations?

Check Break · May 22, 2019

This is what it's called. Not sure if either of these will work because I don't know anything about your cylinder. You can research the specs for each wrench and compare them to your cylinder gland.

OTC 1266 https://www.amazon.com/OTC-Adjustab...p;creative=165953&creativeASIN=B000X8EGZE

OTC 7463 https://www.amazon.com/OTC-7463-Sma...p;creative=165953&creativeASIN=B000I1MC7A

kcm.MN · May 22, 2019

Ideally, you won't need to go to such extremes to remove an end cap. If it were me and I didn't have the proper spanner wrench for the end cap, I'd likely use an air hammer. Was able to find a video describing this technique. Actually, I think they "make" this tool for this purpose, but you could easily make one from any bit. The thinner the bit is where it engages the cap, the more likely the chance the bit will try to cut into the cap. Bits are cheap, so don't be afraid to 'sacrifice' one for this particular need. You might also want to use your angle grinder to cut a spot on the outer rim of the cap so that your air tool can impart the maximum torque.
https://www.youtube.com/watch?v=uBP8yfM6Vbc

FBH44 · May 22, 2019

Don't know anything about this, but someplace online or in a manual, I saw a cylinder end with two small holes, however inside the holes was a wire pushed in, and the wire was meant to hold the end cap on. Somehow. A person had to push that wire out of the hole, somehow, with some sort of other wire. {Sounds like I don't know what I'm talking about, and its almost right.}

Mutt and Jeff · May 22, 2019

Release the retainers and get a wrench that fits the cap.
Go visit your bobcat dealer and aquire the correct tools and service data.
There are a bunch of different types of hydraulic cylinder cap retention types and sizes and removal processes.

Go to youtube and search your specific job. Perhaps you will find it there.

ohiojim · May 22, 2019

my old kubota had the wire retainers, you simply turned the cap one direction and the wire would feed itself out the hole. try turning the cap,each direction to see if the wire comes out. might be why the spanner wrench doesn't have to be very big. the cap should move without much effort.

jm. · May 22, 2019

That is absolutely the last thing you want to do, just get the right wrench and unscrew the cap, just that simple. I have in a crunch made the wrench by drilling the right size of hole in a 1/4 in flat iron and using a short piece of allen wrench put thru the plate to fit the holes.

Russ from MN · May 22, 2019

I have made wrenches for those by using the pins from roller chain, they are very good steel.

Tool for removing end cap hydraulic cylinder

Mtjohnso

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Check Break

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kcm.MN

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FBH44

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Mutt and Jeff

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ohiojim

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jm.

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Russ from MN

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