Lower Roller – Depth Gauge
- Use a Depth Guage placed across the ridge in the middle of the Track Roller.
- Extend the pins until the reach the lowest points on the wear surface where link rail runs on the track roller.
- Then use a tape measure the measure the length of the pins.
Lower Roller – Calliper
Use the calliper to just fit the wear area on the Lower roller surface. Ensure the calliper is reading the true diameter of the roller. The use a ruler to measure the gap in the Calliper