Lower Roller

Lower Roller Depth Gauge 

1. Place depth gauge locating pin on rear of flange. 

2. Press pins down to roller tread surface. 

3. Measure length of each pin to get an average length. 
4. Place callipers at right angle to the track roller. 
5. Find the lowest points of measurements with the tips of the callipers. 
6. Measure the gap of the calliper tips using a ruler 

Lower Roller Ultrasonic 

1. Measure different points using the ultrasonic tool. 

2. Find and record the lowest reading. 

3. Ensure measurement is not over a bolt hole.