STC SmartScanIS, User Manual

Page: 116 / 391

116
14 January 2021, SmartScanIS User’s Guide for Union Pacific, EUD-2016026-00 Rev.2
29 Extend the cable into the bungalow and leave it coiled on the floor.
30 Attach one end of an 8 AWG stranded copper wire to the ground lug on the
flex-conduit-adapter plate and the other end to the ground connector on the ground
rod.
You'll next install the second wheel scanner on the opposite rail.
31 Using a T-handle 1/4-inch hex-wrench, loosen the socket-head-cap screws on the
cover of the remaining not-yet-installed bearing scanner.
The Type II wheel scanner has two socket-head-cap screws that attach the weather
cover to the mount. The Type III wheel scanner has six. Four that attach the weather
cover to the mounting plate and two that attach the mounting plate to the mount.
32 Separate the scanner cover-and-module assembly from its mount.
33 If this is a Type III wheel scanner, disconnect the heater wiring plug.
34 Store the cover-and-module assembly in a safe place until you replace it.
When installing the second wheel mount on the opposite rail, make sure that the two
wheel mounts are squared with each other and directly opposite each other. The next
step tells how to do this.
35 To locate the second mount on the opposite rail:
a Mark the center of the fourth tie ahead of the just installed mount.
b From this mark, measure to the edge of the track clamp on the just installed mount.
c From the mark, measure the same distance on the opposite rail.
d Mark this location on the rail.
This mark will correspond to the edge of the track clamp on the opposite mount.
Use a permanent marker, magic marker, lumber crayon, or paint pen to mark the
rail. Don't use a file or punch to mark the rail.