light of demount operation
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• The Ray Smith Group has developed electrically powered twist-locks for demountable bodies, allowing the driver to remain in the cab.
Actuation comes from electronically controlled valves
operating a transverse hydraulic cylinder On the twistlock cross-beam which is connected to the subframe. Indicator lights in the cab tell the driver whether the system is locked or released.
Shunters using rigid truck chassis in seven Tibbett and Britten freight distribution centres who lift and move Ray Smith demountable bodies around the depots have taken up the system. Because the operation is hands-free the driver does not even have to raise the legs: the entire movement can be controlled from the cab.