The Griffith to Sydney train service will remain on track despite the state's rail operator needing to pull a regional service due to safety concerns.
Transport NSW has pulled XPTs from the North Coast service to Grafton after cracks were found in centre pins which connect the body of the locomotive to the driving wheels.
The news comes as a new mid-week regional service between Griffith and Sydney was due to begin operation, with trains expected to depart from Sydney for the first time on September 18.
However, a Transport NSW spokeswoman said there is no cause for concern regarding the Griffith to Sydney service and the mid-week service will arrive as planned.
The spokeswoman said the train which operates the Griffith to Sydney service is part of the Xplorer fleet, a different and newer line of trains compared to the XPT fleet.
"There are no problems identified with the Xplorer fleet," she said.
"The service should be arriving as per schedule on September 18."
The Xplorer fleet has been in service since October 1993, taking over the Griffith service in April 2000 from a refurbished HUB train.
Xplorer trains operate services out of Sydney to Canberra, Armidale, Moree, Broken Hill and Griffith.
Along with the Endeavour and XPT fleets, the Xplorer fleets are due to be phased out of circulation from 2023 onward.
The XPT fleet, which is one of three regional train fleets used by Transport NSW, will see disruptions to their service as the pins are replaced on the entire fleet over the next five months.
State opposition spokesman on regional transport David Harris called on the government to guarantee services will continue to regional communities after the service was pulled.
"The Government knew that at least one XPT had cracked wheel pins well before the last election, but they took no action, kept the public in the dark and now services are being cancelled," Mr Harris said.
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