Skid steer hydraulic quick couplers lock up for one reason: trapped pressure. Heat, a machine that has been sitting, or an attachment unhooked under load leaves pressure behind the coupler, and then the attachment won't connect. Most skid steers and compact track loaders, including Bobcat, Case, John Deere, Kubota, CAT, Takeuchi and Vermeer, use flat face (ISO 16028) couplers on the auxiliary hydraulics. Push the Tractor Relief Tool™ made for your coupler size onto the coupler and the pressure is relieved in seconds, so the attachment hooks up normally.
Our patent-pending 16028 tools come as a male tool, a female tool, or both together. To pick a size, find the part number stamped on the metal body of the coupler and enter it in the Coupler Size Finder, or email us 2 photos of the male coupler end at relief@relieftool.com: one side view, and one with a tape measure or calipers across the male coupler end diameter. More help: ISO 16028 flat face size guide · all flat face coupler relief tools · skid steer coupler relief guide. Ships next business day.
