Kl130 Cylinder leak

[randot]

Anyone else experienced static leaks on the top cylinder of the KL130 loader? I attached a pic where I found a small bump on polished part of the cylinder rod. I get a palm sized puddle of hydraulic fluid on the floor about every three days. Dealer said to send it to him to see about warranty. Tractor has just over 180 hours, thought something like this may have happened sooner due to a defect on the rod.

 

[mrutkaus]

Hi, can't see any bump or defect in the picture,

Mike

 

[randot]

I could not find it either until i ran my fingers across it, it feels like a piece of dirt that won't come off.

 

[Highbeam]

Warranty is a good thing and your dealer should take care of it. Leave the chunk of crud on the rod for "evidence".

In the future in the abscence of a warranty I have carefully filed off any imprefections. The rod is chromed and where the chunk gets filed off it will not be chrome but the important thing is to remove any imperfection standing proud of the rod that will rip, gouge, tear, or disturb the seal. A concave crater may take a crater full of oil each time it passes below the seal but that is a very small amount of oil.

My old bulldozer rams were very damaged due to being in harms way around rocks and debris. The rods had several nicks that were filed smooth and the seals didn't leak.

 

[rapracing]

I have had problems with almost all cylinders leaking off. I even had the valve body replaces. The front bucket would leak off. You could actually watch it. The main boom leaked on on one side. All cylinders on the 2375 hoe have been repacked. The stick boom still leaks bad. You can see it leak off. Both out riggers are leaking now. About every 1 to 2 minutes I have to put presure back on them. They leak off and I just drag the machine back wards. I love the tractor but this has been the big draw back.

**I am not complaining about the dealer. He has taken care of everything so far.

 

[randot]

Dealer said he has one in stock and will do a one for one exchange, I just have to send it to him. Before buying the tractor, I saw a thread here where someone experienced this very problem. I went over all the cylinders very carefully when I first picked up the tractor and must have missed the defect.

 

[randot]

To follow up, there is only a one year warranty on hydraulics, just an fyi, but dealer is looking into helping even though I am past the one year mark. The defect has been there since delivery, so I will see what the dealer comes up with.

 

[RexB]

That's good news randot, the manfr/dealer should take care of manf defects like in a ram. Thanks for the heads up, I'm checking all my rams now with a bright light and fingers

(The old JD has stainless rams and no problem for +4000hrs) but I'm lovin' this coyote

 

[DirtHauler]

I had loader leak-down problems too. The first time was due to the factory folding the "lip" on one of the pistons when the ram was put together. The second time it did it I thought I'd blown a seal again, went down to get it fixed again under warranty but it was past a year...no go, so I bought the "packings" (sticker shock! $170.00!!!). When I pulled the rams apart there was nothing wrong with the seals BUT there was alot of "crud" in the cylinders that appeared to be pieces of hose etc. I assume from manufacturing and not being flushed prior to assembly. After I cleaned out the cylinders, cleaned and oiled the pistons I've experienced no further leak downs. So for those who have "leak-downs", it may be due to junk caught between the piston seals and cylinder allowing oil to bleed past.

 

[VictorW]

When I first took delivery of my CK30hst with Kl130, I noticed small pits in the chrome rod of one lift cylinder but no bumps. After checking further, these pits were rust and the chrome was gone. The dealer said it might have been caused by the salt air when coming over on the ship. I think it was just a faulty plating job. Either way, he sent the cylinder out and had it rebuilt locally. Haven't had a problem since and never any leak down.

 

[Wayne County Hose]

I had loader leak-down problems too. The first time was due to the factory folding the "lip" on one of the pistons when the ram was put together. The second time it did it I thought I'd blown a seal again, went down to get it fixed again under warranty but it was past a year...no go, so I bought the "packings" (sticker shock! $170.00!!!). When I pulled the rams apart there was nothing wrong with the seals BUT there was alot of "crud" in the cylinders that appeared to be pieces of hose etc. I assume from manufacturing and not being flushed prior to assembly.

$170 for a packing kit????? You could have had the cylinder rebuilt for less than that.

Your crud in the cylinders was not from the manufacturing process. It was most likely from a new hose that was not cleaned after assembly. Check out this website: Ultra Clean Technologies. If your hose shop doesn't clean and cap your hose before the sale, find another hose shop.

 

[randot]

I received the new cylinder, dealer covered it under warranty because the bur had always been there. After putting on the new cylinder and curling the bucket several times, I notice the bucket now leaks off, about an inch in 30 min. Not sure if I still have air in the lines, but it has been two weeks and I have put the loader through a lot of curling. Dealer said to watch it and give him exact time and movement amounts and he will check with Kioti if it is still doing it in two weeks. I've gone from having a puddle of hydraulic fluid on the floor to a bucket that dumps by itself.

 

[malk315]

I had mine one time gradually roll forward instead of staying there for a few times (like an inch every 5 seconds as opposed to 30 mins!) I wanted the bucket to stay put a foot or so off the ground.

After cycling the loader a few times it stopped doing it and never did again. Other guys have reported this where it has persisted or gone away.

I've also noticed that when I have a heavy load in the bucket and I go to dump, when the load is dumped halfway and not falling out of the bucket yet, the load "pulls" on the cylinders and can make the bucket roll forward much quicker than the fluid would normally be allowing. Then the load falls out and the bucket stops for a few seconds even though I've still got the curl forward valve open w/ the joystick. After a few seconds the fluid in the cylinders "catches up" and the bucket starts rolling again.

I thought it was a major problem starting to happen, but the behavior seems to make sense -- although if it's air that the cylinders are able to pull in, then that might be an issue.

I've checked my HST oil and it's spot on full, nice and clean, and I've only got about 40 hours on the machine since 50 hour service. All other loader behavior -- grading, moving stuff, picking up stuff etc. have been just fine.

 

[TBDonnelly]

Here's the leakdown guidelines that's posted on the Deere website. Gives you an idea of what's acceptable for the Deere's.

Loader and backhoe boom/bucket lower slowly while parked

Don

 

[Wayne County Hose]

I received the new cylinder, dealer covered it under warranty because the bur had always been there. After putting on the new cylinder and curling the bucket several times, I notice the bucket now leaks off, about an inch in 30 min. Not sure if I still have air in the lines, but it has been two weeks and I have put the loader through a lot of curling. Dealer said to watch it and give him exact time and movement amounts and he will check with Kioti if it is still doing it in two weeks. I've gone from having a puddle of hydraulic fluid on the floor to a bucket that dumps by itself.

The piston seal on your new cylinder is faulty. Argue to get it changed, it will not heal itself.

With the 2 cylinders connected hydraulically, if one cylinder passes fluid past the piston seal, it bleeds fluid to the other cylinder causing both of them to extend. If this did not do this before, the new cylinder is bad.

 

[randot]

Thank you for the info, that is exactly what appears to be happening, with a load in the bucket it won't stay put for more than a minute. I contacted the dealer and he has another cylinder on the way. He said they have had a few cylinders have the inner piston seal roll in the assembly process.

 

[randot]

I am now on the second cylinder from the dealer and it is still leaking off. I saw in another post that the air is supposed to work itself out of the lines through use. I have put about 3 hours so far on the tractor and in leaks off slower, but still fast enough where I cannot shovel stuff into the bucket before it levels out. When the loader is assemble for the first time how is the air removed from the system? I have even tried cracking open the line with the bucket all the way down and a small amount of air escapes, but I am afraid I am introducing more into the system.

 

[JerryG]

As you work the loader up and down and dump and scoop, the air will go out. The fluid travels though the lines as the cylinders are worked and goes back to the sump. It just dumps in there and the air goes out the breather.

 

[DirtHauler]

$170 for a packing kit????? You could have had the cylinder rebuilt for less than that.




That was the price (in California dollars!) for two piston/seals, one for each cylinder. I ask a dealer what they cost.

 

[HODAK]

I am now on the second cylinder from the dealer and it is still leaking off. I saw in another post that the air is supposed to work itself out of the lines through use. I have put about 3 hours so far on the tractor and in leaks off slower, but still fast enough where I cannot shovel stuff into the bucket before it levels out. When the loader is assemble for the first time how is the air removed from the system? I have even tried cracking open the line with the bucket all the way down and a small amount of air escapes, but I am afraid I am introducing more into the system.

There could be a problem in the loader control valve and not the cylinders.