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Read articles →This is a hands-on repair walkthrough, not a buyer's overview: an owner pulls the Supercab roof off a Kubota B2650 to access the AC system, cleans a dirt-clogged evaporator coil, and replaces the expansion valve with fresh O-rings, then recovers refrigerant and pulls vacuum before recharging. It's detailed, step-by-step DIY footage best suited to existing B2650 owners troubleshooting cab AC problems, not shoppers evaluating the tractor.
Posted by the 36\18 Alaskan\Florida Life channel, appearing to be an owner doing their own repair work rather than a dealer or reviewer.
To access the AC evaporator coil and expansion valve, since dirt drawn in through the cab can clog the coil even with a filter installed.
Recover all refrigerant first, remove the hose bolt with a 10mm socket, take out the old valve, then install the new valve with fresh O-rings on both connections.
Yes, after sealing the system you hook up a vacuum pump to both sides and run it about 45 minutes before recharging.
