Replacement seals for jd excavator rotary manifolds, this is the rotary joint in the center of the undercarriage that supplies oil to the travel motors. If there is damage to the upper seal surface of the internal spool, we can rebuild this for you for around $1000 even if the top seal surface needs repair. Fits john deere models. For manifold as shown with. If your center joint has only 18 bearing balls you need. If you have any questions please call 207-744-4028 or toll free. Pictures are representative, colors may vary, please call if you need more information. Backhoe-loader, bulldozer, loader etc. , equipment model number, what the cylinder does i. Bucket, boom, blade, etc. & if you have it, the cylinder number, oe part number, or equipment serial # etc. We will hunt for the right kit for your machine & send you a link to the listing if it is available. Some kits may include extra parts because they are made to fit the design variations of a particular model. Kits for rod glands with pressed in metallic bearings (such as bronze) generally will not contain a replacement bearing, however phenolic & plastic bearings are normally included. If a bearing is available separately we will let you know. Because seal designs are continuously improving, and because of possible previous repairs, some kits may have a different seal design than the seal you remove, however, unless the original seal grooves were machined in a previous repair the replacement seals should fit & function properly. Never attempt to service a pressurized cylinder, or a cylinder connected to a load, never use air or hydraulic pressure to disassemble a cylinder. The free listing tool.The item “Seal Kit for John Deere 290D, 490D, 590D, 690D, 790D Excavator Center Joint” is in sale since Thursday, March 20, 2014. This item is in the category “Business & Industrial\Heavy Equipment Parts & Accs\Construction Equip Parts”. The seller is “foxprints2003″ and is located in Multiple USA Locations. This item can be shipped to United States.