Seal Kit 4 Deere 290D 490D 590D 690D 790D Excavator Center Joint Rotary Manifold

Description

Replacement seals for JD Excavator rotary manifolds (center joint / swivel joint), 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 00 + shipping if the top seal surface needs repair (see caution below), or about 0 + shipping if it has
not
been damaged.. Just contact us for terms if you want a rebuild & we'll list the service for you.
Fits these John Deere models:
290D
490D
590D
690D
790D
792DLC
892DLC
For manifold as shown with
20 bearing balls
model HCJ-090A, if your center joint has only 18 bearing balls you need
this seal kit
or if yours has a blade contact us for additional seals.
CAUTION:
To prevent
causing
damage to the spool when disassembling the center joint, make sure you hold the housing vertically,
upside down
(cover with model number tag up) remove the cover, o-ring, snap ring & washer, then
push the spindle straight down out of the housing
. If you do not do this the bearing balls will drag across some of the sealing surfaces causing expensive damage to the spindle. Do not lay it on its side or push the housing down off the spindle. The balls are an interference fit on the top surface of the spindle so there will be damage there and on the housing from assembly/disassembly, but as long as it doesn't extend to the sealing surfaces that is OK.
To re-assemble stand the spindle vertically on a flat surface
upside down,
using a rubber mallet (or preferably a press) push the housing down over the spindle, place the bearing balls on the spindle race just before you run out of room to work. Then re-install the washer & snap ring, o-ring & cover.
We are Fox Machine, Inc. of Norway ME USA, If you have any questions please contact us (you can use the as seller a question link below).
Pictures are representative, colors may vary, please call if you need more information.
Never attempt to service a pressurized cylinder, or a cylinder connected to a load, never use air or hydraulic pressure to disassemble a cylinder. These are top quality aftermarket replacement parts, we are not affiliated with any equipment manufacturer.
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