The changes will see the departure of Moventas group president and chief executive Mikael Laine, his replacement by two senior vice-presidents, and the installation of Clyde Blowers directors Alex Stewart and Gavin McCallum in a "more leading and operative role".
Moventas, chaired by Mr McColl, this month absorbed the wind gear business of Yorkshire-based David Brown, one of the driving forces in the East Kilbride-based Clyde Blowers empire.
Moventas bought out David Brown's UK-based production unit with test facilities and a service workshop to create David Brown Wind UK, which it said would "significantly expand (the group's) wind footprint".
It will continue David Brown's partnership with Samsung Heavy Industries in 7MW offshore turbine drivetrain development, adding to Moventas' multi-megawatt gearbox technology for industry players Areva and DSME/DeWind.
The group will still use Moventas as its lead brand in the wind market, but is preparing to rebrand its industrial gear arm as Santasalo, and run the businesses more independently.
"Santasalo is Moventas' predecessor and a major part of the Moventas history and legacy since the 1940s," the group said, adding the brand had "long heritage and great value that will now be fully harnessed".
Mr McColl added: "Recent investments in new service centres, additional sales resource and some exciting new product developments provide a strong platform for further growth in the Santasalo business."
Both the rebranding and the related operational changes will take place by the end of the year. Mr Laine said: "Moventas will be developed further as two independent business areas to gain better focus."
Moventas provides power transmission solutions to industries including pulp and paper, mining and marine.