Abstract: In a sheet metal cab structure for a vehicle provided with a rollover protection structure including a vertical post and a door hingedly mounted for movement between open and closed positions about a vertical axis closely adjacent the post, a door holding assembly including a base mounted on the door and including a stop at one end thereof positioned to engage the sheet metal cab at a location whereat the sheet metal is backed by the vertical post when the door is in an open position, a crank having a handle and an eccentric is journalled in the base and a resilient link is connected to the eccentric. Selectively operable securing devices including one end of the link remote from the eccentric and a bracket secured to the cab wall are provided so that the link may be selectively connected or disconnected from the sheet metal cab.