This equipment was initially configured to measure the tension in a PAS belt drive on a V6 engine. The jig plate holds an optical sensor and an electromechanical hammer which forces the belt into vibration. The jig plate locates easily on the front engine mount and magnets retain the plate against the flywheel damper pulley. The CLAVIS control cabinet displays both the belt tension frequency and whether the belt is slack, tight, or within the correct tension range. Initially the tension adjustment was made manually by the operator. However, the plant impressed with the consistency of measurement connected an air solenoid valve to the control cabinet so that an air tool would make the adjustment and shut off when the correct tension was reached.
