Mercedes were “pretty tight” on time in getting Lewis Hamilton’s W10 rebuilt after discovering a hydraulic leak in the wake of qualifying.

With three hours to go before the start of the Canadian Grand Prix news broke that Hamilton’s W10 was in pieces in the Mercedes garage due to a hydraulic leak.

Although the team had been aware of the problem after qualifying, they were not able to do anything until the Sunday due to parc ferme regulations.

As such the team faced a mad dash to find the problem, fix it and then put the car back together.

“We had some issues with Lewis’s car before the race and this actually became apparent after qualifying,” trackside engineering director Andrew Shovlin says in the latest Pure Pitwall video.