EUD-2016026-00 Rev.2, SmartScanIS User’s Guide for Union Pacific, 14 January 2021
111
6.3 Wheel Scanners
An assembled
Type II
wheel scanner looks like this.
An assembled
Type III
wheel scanner looks like this.
Not all sites use wheel scanners. If your site doesn't use them, skip the instructions below and
go to
6.4 Track Circuit
.
To install the
Type II/Type III
wheel scanners:
1
Be sure that you have on hand two assembled wheel scanners.
2
Be sure that you have on hand a short-handle 1-1/2-inch open-end wrench, a T-handle
3/16-inch hex-wrench, a T-handle 1/4-inch hex-wrench, and a 50-foot (15-meter) or
longer tape measure.
3
If not done already, select a location to install the wheel scanners.
The wheel scanners should be centered in the crib of two ties spaced at least
14 inches (35.6 centimeters) apart. The crib of the two ties is the one immediately
ahead (and to the north or east) of the bearing scanners. This places one wheel
scanner between the two gating transducers. The other one is directly opposite, on the
other rail of the track.
Summary of Contents for SmartScanIS
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