Link – Ultrasonic
1 – Measure the rail over the bush strap or the bush end of the link.
2 – Twist probe to ensure proper signal.
Link – Depth Gauge
1 – Measure amount of material between the rail and bush.
2 – Make sure under surface of shoe is clean.
3 – Place the depth gauge on the bottom of the rail with pin passing directly through the centre of the bush and touching the undersurface of the shoe.
4 – Measure pin length with a tape measure