580b tilt cylinder gland nut

davenag · Sep 14, 2012

I have a case 580b loader/backhoe with a leaky loader bucket tilt cylinder. I tried to remove the cylinder gland nut using a heavy duty adjustable gland nut wrench, a 3/4 inch drive breaker bar, and a 5 ft long pipe for leverage. I couldn"t budge it. I"m thinking I could heat the housing to help free up the nut, but I would probably cook the seals inside. Since I"m planning on replacing the seals maybe that"s not a big deal. Any tricks to loosening the gland nut?

IaGary · Sep 14, 2012

Some glands may have a set screw to lock them in place. I think you would have seen that by now.

Push the piston in and heat it up. I would cool it back down with water quickly before trying to turn to avoid galding the threads.

Heating then cooling should loosen it up.

Gary

rufus80 · Sep 14, 2012

You could use a little heat, just watch you don't get it super red hot. One question, has the port on the cylinder ever been rewelded? I have seen a lot of case cylinders that the port cracks and has been rewelded and it warps the barrel.

greygoat · Sep 14, 2012

Poly type seals could melt..then harden into a
mess that you may never clean out..and jam the
threads permently.

davenag · Sep 14, 2012

Yes, I did remove the set screw. Thanks for the heating/cooling tip. I assume your suggestion to push the cylinder in is to avoid damaging the chrome plating while applying heat to the cylinder housing?

davenag · Sep 14, 2012

Thanks for the reply. I will check to see if the port has been welded.

davenag · Sep 14, 2012

What would you suggest instead of heat?

rufus80 · Sep 14, 2012

If I remember right the barrel to gland seal, o-ring, is to the front of the threads. But you are right about the polyurethane seals melting, it you get it to hot the rod seal and wiper will melt and it is a mess to clean out once hardened.

Allan in NE · Sep 14, 2012

What Gary said.....look for a locking setscrew.

Allan

Dalex · Sep 14, 2012

I worked for a Case dlr , and IaGary has it right, Heat red hot , then cool with water. Try Kroil or PB in between cycles....
Don't worry about the seals, the rod wiper may get smoked , but its easy to clean up ...

ohiojim · Sep 14, 2012

it'll loosen up all right,..good luck keeping it tight again, take it to a good hydraulic repair place...it'll be money well spent....BTDT

BobHnwO · Sep 14, 2012

Had same problem with my 580B,same cyl.,I took a chisel and made a flat spot on the outside edge of the gland,then used a punch and big hammer and beat it loose,them used the gland wrench!

VicS · Sep 14, 2012

Heating it is not a big deal, I had mine in a vise and heated the barrel just a little while putting pressure on the wrench. Came off in a flash, just burned the paint a little. Never got hot enough to melt any of the seals. I have changed all of the cylinder kits once and some of them twice.

580b tilt cylinder gland nut

davenag

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IaGary

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davenag

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