If your grease nozzle is the original, you can grease gun grease nozzle left and right shaking, pulling hard to the side to make it detach, do not be afraid of hose breakage, the quality of this hose is very good, generally very few breaks, such as can not be detached, can only be disassembled to inject grease grease nozzle, with a carp pliers clamped to inject grease nozzle of the front, with a suitable open-ended wrench unscrewing the injection of grease nozzle of the rear, do not need to be completely dismantled, the gap of 4mm or so, move back and forth to the injection nozzle. Loosen the gap of about 4mm, back and forth activities will be detached from the injection nozzle, try it, no problem