NR TWI 2S074 ISSUE 1 PDF

Introduction

This Track Work Instruction covers how to change an S&C check chair, baseplate or bracket under a check rail.

There are major differences between FB and BH installations.

See also separate instructions:

TWI 2S005 How to change an S&C block

TWI3S101 How to install a check chair in a continuous extended parallel wing check rail.

Note. Always contact the Signaller before you start work on S&C and state what you intend to do. You will need to arrange a blockage of the line.