Genuine replacement clutch (cam) for the ART Spiderjack 2 and 2.1. To replace the worn cam use a 3mm Hex to release the two safety screws on the Spiderjack face plate, then remove along with the washers. Carefully lift off the face plate and gently tap out the clutch bearing pin. With the bearing pin removed, the clutch (cam) will drop out from between the side plates. Insert the replacement clutch (cam), relocate the bearing pin and then the faceplate. Re-tighten the two safety screws to 3-4 kN or 26.5 – 35.4 IN lbs.