Protection mechanism on an implement

A power machine comprising:

• a frame;
• tractive elements supporting the frame;
• an implement coupled to the frame and having a tool;
• a hydraulic actuator coupled to the tool and at least first and second hydraulic lines, wherein the hydraulic actuator includes a base end coupled to the first hydraulic line and an rod end coupled to a second hydraulic line;
• a protection mechanism that is configured to receive hydraulic fluid during normal retraction and extension of the hydraulic actuator;
• wherein when an unintended external tension force causes the hydraulic actuator to forcibly extend, the protection mechanism is configured to provide hydraulic fluid to the base end of the hydraulic actuator and wherein when an unintended external compression force causes the hydraulic actuator to forcibly retract, the protection mechanism is configured to receive excess hydraulic fluid from the base end.