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Discussion Starter #1
The mid mower lift hydraulic cylinder under the tractor floor that lifts the deck was found frozen when attempting to lower for mower reinstall. Seems the cylinder shaft is solid as a rock. The JD listing of parts is difficult to find P/N of this cylinder. The closest I could uncover is BLV10739 which is a kit with other pieces and contains the cylinder. The listing price of this kit is enough to knock you over. This hydraulic cylinder is quite small about 12" hole to hole extended (maybe a bit more, not sure), cylinder portion about 1.5"diameter, ends a bit bigger at 1.75 diameter, and 7" long. It's a welded assembly so repair is not an option.

Even an aftermarket replacement would be ok if made in USA and not china. The original cylinder does not have any markings on it, I suspect not made in USA since it didn't last very long.

Suggestions .......?
 

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Looking at JDParts, I concur that the kit number is BLV10739. It runs $276.10 on GreenFarmParts (a GTT supporting vendor) (Here is the link to the part). With the 7% GTT discount (use code GTT) it would be $256.77.

With a little further digging, it looks like you can get just the cylinder (LVA15396) for $265.17 ($246.61 after discount).

I agree it's expensive for what it is, but my GoogleFu (Kung Fu Google Ninja Skills) did not come up with a cross reference.
 

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Did you try disconnecting the hydraulic line from it and removing the orifice washer? It could be plugged, it is fairly small. Also, there is a vent for the other side of the piston, at the other end of the cylinder, make sure that isn't plugged, as well.

Be careful when disconnecting the line, as there a return spring for the cylinder that well expel fluid quickly once the line is loosened, if the orifice is plugged.
 

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Discussion Starter #4
Thank you Traction and Martincom. The idea of close to $250 for a small cylinder does seem out of line. But JD was never shy about the prices they charge. The cleaning out the cylinder and looking for blockage will be my next task. Gonna rain tomorrow anyway. I will be cautious of the expelled fluid. Thanks again for the heads up.

I hope the cylinder is just plugged. But because there are no markings on the cylinder I wonder who makes it for JD. Strange none offered on the replacement parts market.
 

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I am a big fan of John Deere OEM replacement parts, but sometimes, the prices are just way out of line.

Grainger is a major source of hydraulic cylinders. Here is a link to their online catalog.

https://www.grainger.com/search?searchQuery=double acting welded style hydraulic cylinder&suggestConfigId=6&searchBar=true&analytics=kw:double acting welded style hydraulic cylinder

This is just one example of the numerous sources out there. I think the trick is going to be matching the dimensions line connections and cylinder capabilities exactly.......

Also, there are many "re-builders" of the welded cylinders out there on the internet when you google ""Hydraulic Cylinders (Welded) Rebuilding and Service"". If it turns out that your cylinder is defective or needs a rebuild, you may want to check with these companies regarding their services. There may even be someone in your area which offers these services.

It seems to foolish to me to throw away an entire cylinder when if there is a problem, it's likely a rubber seal or O-ring which is causing it....It's not like you broke the end off the the hydraulic cylinder or bent the cylinder rod........:dunno:
 

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Discussion Starter #6
Update on hydraulic cylinder. I removed it. There are markings on the underside. LVA15396 HANNA 06-16-12.
HANNA is hydraulics company, I looked up on interweb.

The cylinder was rough to push rod in and out. The tiny hole oriface and the vent were clean good shape. But with the fittings removed the inside was full of broken up seals, all black crud. Way too big of partials to fit thru the tiny oriface. Looks like a rebuild or replacement is the only solution.

With so little usage this cylinder (option on the tractor) was not a good experience.
 

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Even if out of warranty.. Contact your dealer service mgr and NICELY make him aware of your situation. Every dealer has the ways and means to make adjustments. Its all based on the PITA factor.. How much of a Pain In The Azz you are. FYI.. Service people like jelly filled donuts.. But only before 10. Lol

Sent from my LGL52VL using Tapatalk
 

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Sounds to me like it was not assembled correctly to fail like that, a cylinder should last decades... I'd talk to the dealer, and then maybe a regional manager.
 

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Same here talk to the shop foreman show him or her what you found, and as Kenny said sometimes a box of sweet goodies goes a long way. Sounds like it wasn't assembled correctly from the beginning.
 

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FYI.. Service people like jelly filled donuts.. But only before 10. Lol

Sent from my LGL52VL using Tapatalk
What do they call the ones with cream cheese in the center? I'd go a long way for a customer that showed up with some of those, or the kind of crunchy brown ones with the ridges on top...:eat: :fed: :laugh:

All kidding aside, if you approach the dealer and ask for help they might be able to do something. It helps if you've already established a good relationship with them, they can use that as leverage with the OEM to get it covered or as a reason to cover it themselves. Even at the technician level we can affect what gets covered to a degree but going to the service manager or your sales rep (if you bought it there) and asking for their help.
 
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