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Read articles →This is a hands-on DIY install of John Deere's factory third-function SCV kit (BLV10763) on a 4066R, showing the actual hydraulic hookup for grapple controls: removing wheel/plate to route hard lines, finding the hidden O-rings that caused a leak, disassembling the cab console to wire the joystick switch, and a brief grapple demo picking up firewood afterward. Best for owners planning this exact install who want real wiring/plumbing detail rather than a spec overview.
An owner documenting their own tractor project, sharing firsthand install experience including mistakes and cost tradeoffs rather than a polished or sponsored tutorial.
The kit is called the BLV10763, purchased directly from a John Deere dealer, and should work on any 4 Series cab tractor including the 4044, 4052, and 4066.
Two O-rings were found loose in a bag and needed to go on the front side of the hard lines before screwing into the couplers; missing them caused a leak.
Remove console screws, slide the console off the joystick shaft, disassemble the joystick, slide the new switch in, route the wire down the handle, and plug into the provided harness.
The full John Deere hard line kit gives a more professional look and would have cost about 200 to 250 dollars more than the rubber lines and hose hookups that were used instead.
