Re-assembling Hydro Cylinder

[jd3l88]

Hey everyone,
I'm reassembling the lift cylinder on a model 1200 FEL. I stripped and repainted everything and got rebuild kits because all four cylinders were leaking. So far I did one of the bucket cylinders with no problem, but the lift cylinder is giving me trouble. The repair manual says to install the new V packing into the cylinder head with the lips facing in and then place the washer on top and secure the whole thing with a snap ring. I did all of that, and after I compress the V packing down enough to get the snap ring in the groove it makes it impossible to slide the piston rod into it. I soaked it in hydro fluid too. Anyone have any tricks to get the cylinder head over the piston rod? I already ruined my new paint job and probably a v packing trying to force it, and am going to have to repaint it.

 

[LRP]

take the packing out , reassemble with the piston rod in place and use oil
when assembleing.
Louis

 

[jd3l88]

Ok, Took the packing out and slid everything over the piston rod in order. Then put the rod into the cylinder head. I still can't get the snap ring down into the groove. It's real close. I'm using a punch to knock it down into the groove but when I hit one side the other side 180 degrees around the ring starts to raise up. Maybe make a collar out of a piece of pipe to fit the snap ring and use a press? This cylinder is really killing me. Never had one give me trouble like this

 

[LRP]

your on the right track, u know the old saying,
u can,t have all male pups!!!
Louis

 

[jd3l88]

Well I fought with it long enough and finally found the answer. The v packings I got from kubota won't fit on that cylinder, they are a fraction of an inch off. A hydraulic repair company we deal with at work came and took a look at it for me and made me a new top bushing for the vee pack a few thousandths shorter. I put it all back together and it fit perfectly. He said it never would have went back together no matter how hard I tried.

 

[savethetractors]

Very dead thread, obviously but... I'm doing the same job and having the same issue.

First, I tried a lift cylinder w/ a kit from e-parts. I compressed all the packing into the cylinder head w/ a vice and it was bulging substantially. But I had faith in e-parts & the kubota loader manual. I ground the sharp edge of the rod w/ a flap disc. Then, tried hammering & ratchet straps to get the cylinder head onto the rod. It didn't go on at all; so onto the next method. I was avoiding marring up all the parts but this seemed like the best option at the time. Used a pipe wrench on the nut, which successfully got the cylinder head on!! And sheared the lips off 3 v-rings

Next, I tried a tilt cylinder w/ a kit from kubota. Same issue with packing bulging significantly.
The original v-ring adapters are shorter so I'm thinking of using those...

 

[TheOldHokie]

Very dead thread, obviously but... I'm doing the same job and having the same issue.

First, I tried a lift cylinder w/ a kit from e-parts. I compressed all the packing into the cylinder head w/ a vice and it was bulging substantially. But I had faith in e-parts & the kubota loader manual. I ground the sharp edge of the rod w/ a flap disc. Then, tried hammering & ratchet straps to get the cylinder head onto the rod. It didn't go on at all; so onto the next method. I was avoiding marring up all the parts but this seemed like the best option at the time. Used a pipe wrench on the nut, which successfully got the cylinder head on!! And sheared the lips off 3 v-rings

Next, I tried a tilt cylinder w/ a kit from kubota. Same issue with packing bulging significantly.
The original v-ring adapters are shorter so I'm thinking of using those...

You use more or fewer rings to get the right amount of "squeeze".

Dan