Tool for Hydraulic Cylinder repair Question

[Henro]

An afterthought about this repair occurs to me: If the only reason for re-sealing the cylinder is because it’s leaking from the end... then there is little reason to replace that difficult seal on the piston at all.

Just replace the O-rings on/in the piston and on the end-piece and get-on-down-the-road. Any internal leakage at that piston will likely be resolved by the o-rings alone...and any other will be insignificant and inconsequential anyway.

There is a procedure you can try while the cylinders are on the tractor to evaluate how much repair might be needed.

This, if it my attempt to add an image works:

 

[GeoHorn]

Henro... That is an EXCELLENT post!

 

[PoTreeBoy]

Remember kids, Henro's the guy that hasn't checked his fuel filter in 17 years and act accordingly. Personally, I'll take my chances on boogering up the new seal while I'm in there.
I'm picking on Henro and GeoHorn. You should Google 'maintenance-induced failure' to reinforce your position.

 

[GeoHorn]

Remember kids, Henro's the guy that hasn't checked his fuel filter in 17 years and act accordingly. Personally, I'll take my chances on boogering up the new seal while I'm in there.
I'm picking on Henro and GeoHorn. You should Google 'maintenance-induced failure' to reinforce your position.

Here you go!: https://terrywireman.typepad.com/terrys-blog/2011/07/the-myth-of-maintenance-induced-failures.html

 

[lugbolt]

yeah my thought was the same for years, if the piston seal ain't broke don't replace it

you have to buy it as part of the kit
you are taking the cylinder apart to replace the gland seal and dust seal which means the piston has to come off.

the piston has to come off, you have the seal, it's real easy to replace. There is no sense NOT to unless you're plum lazy. if you don't and later on something is up with the loader and it's not lifting properly, you'll be questioning yourself, why was I stupid that day?

 

[Henro]

Remember kids, Henro's the guy that hasn't checked his fuel filter in 17 years and act accordingly. Personally, I'll take my chances on boogering up the new seal while I'm in there.
I'm picking on Henro and GeoHorn. You should Google 'maintenance-induced failure' to reinforce your position.

Great advice. Booger up your repairs all you like.

But do not wright off a good procedure because you think changing a fuel filter without reason is a good reason to ignore a sound procedure.

Add to that, I do not recall many checking their fuel filters before or after changing them.

Just call me F, D & H.

 

[D2Cat]

Yes, it’s the external piston seal that concerns. THAT is the tool which would be specific to particular sizes of pistons and would be most expensive.
The inside seals don’t even need a tool.... simply folding the O-ring is not difficult.

I guess you can simply fold them if you have fingers shaped like pencils!

 

[GeoHorn]

I guess you can simply fold them if you have fingers shaped like pencils!

I’ve done it using tweezers, hemostats, and needle nose pliers even. Fold it into a Heart-shape, grab the ”crevice” with tweezers in a gentle “pinch”, insert it into position and release it, then smooth and open the heart into place.