Heavy Duty Assisted Lift Trunnion Operation and Maintenance Manual
Form Reference
C64.65546
Issue
5.00
29 of 39
Issue Date
May 2021
It is then possible to remove the module completely. As the cable is withdrawn, the tracer cord
and plug coupler will travel up the post and when it reaches inside the signal head can be
undone and the module fully removed.
Tie the tracer cord to the plug on the new module and use it to pull the new cable down the
bore of the post, guiding the cable through the slot in the post and into the connection box.
(The tracer cord can then be removed)
Reconnect the splitter cable if the signal has a second module or fit the blanking cover if not
and refit the cable clamp(s). Carefully stow any excess cable inside the post/head and secure
the new module in place using the socket headed screws.
The signal should be electrically connected as shown in the installation section and the post
installation tests carried out.
Because the signal alignment has not been disturbed during this process, there is no
requirement for a signal sighting exercise to be carried out.
Module Replacement (Other Signal Modules)
The Junction Route Indicator Modules were modified to Mark 2 standard to increase
interoperability by changing the profile so one module would fit each arm position (1,2,4&5).
Ensure the replacement module you have is the correct build standard prior to lowering the
signal.
