EUD-2016026-00 Rev.2, SmartScanIS User’s Guide for Union Pacific, 14 January 2021
353
Appendix D
Replacing Scanner Cover-and-Module Assemblies
There are
Type II
bearing scanners and
Type II
wheel scanners. Both contain two major
parts. The top part is the cover-and-module assembly. The module and its protective cover
are tightly integrated and rarely should be taken apart. Except for the addition of a
plastic
attenuation plug
on the wheel scanner cover, both types of cover-and-module assemblies
are identical and can be used interchangeably. The bottom part is the mount. Bearing
scanner mounts and wheel scanner mounts are different in design. They can't be
interchanged.
There are also
Type III
bearing scanners and
Type III
wheel scanners. Both contain two
major parts. The top part is the cover-and-module assembly. The module and its protective
cover are tightly integrated and rarely should be taken apart. Except for the change of
filter
frames
in the wheel scanner module, both types of cover-and-module assemblies are identical
and can be used interchangeably. The bottom part is the mount. Bearing scanner mounts
and wheel scanner mounts are different in design. They can't be interchanged.
This appendix tells how to replace scanner cover-and-module assemblies. Replacement of
scanner mounts isn't covered in this guide.
D.1 Bearing Scanners
The figure below shows the major parts of a
Type II
bearing scanner.
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