ASTM D2981 Test Method for Wear Life of Solid Film Lubricants in Oscillating Motion
8. Preparation of Apparatus
8.1 Before each test, thoroughly clean the test block, the shaft, specimen holder, lock nut, lock washer, and the tapered and threaded sections of the test shaft, using the solvents described in 6.1.
8.2 Using clean, lint-free cotton gloves, mount the test block in the block holder and position both securely in the cylindrical slot of the specimen holder. Holding the test block in place, mount the test ring over the test shaft and press into position beneath the block exercising care not to scratch the coated test surface. Position the lock washer and lock nut and tighten with the torque wrench to 2 N•m (100 lb•in.)
8.3 Calibrate the load cell transducer and recorder in accordance with the equipment manufacturer's directions.
8.4 Adjust the arc of oscillation to 90°.
8.5 Place a 1.4 kg (3 lb) weight in position on the bale rod.
8.6 Set the friction force cut-off level to terminate the test at a frictional force of 280 N (63 lb) or a coefficient of friction of 0.1 after wear-in.
