Abstract: A system for supporting a vehicle frame, preferably of a forklift, on a base surface includes a pair of linkages attached to the frame. Each linkage includes a base link having a first end attached to the frame and a second end. A contact link is rotatably attached to the base link second end and has a contact surface engageable with the base surface. A drive link has a first end connected with the frame and a second end connected with the contact link. The drive link is configured to move the contact link in a first direction, such that the contact surface moves into engagement with the base surface, and alternatively in a second direction such that the contact surface moves generally away from the base surface. The drive link has a first portion connected with the frame and including the drive link first end and a second portion connected with the contact link and including the drive link second end.