The Head is attached to the Gantry via the Head Grabber Arm which moves vertically on the Gantry via the Vertical Belt.
The Head Wheels are spring-loaded and roll along the grooves in the Gantry.
The Vertical Belt is behind the Gantry Cover in some models.
Connections:
The Gantry is a spanning framework which attaches to the top and bottom of the Board and moves horizontally across it.
As the Gantry moves horizontally, the Head moves vertically via the Vertical Belt and the Footblock rotates to apply the Cartridge to the matboard.
Troubleshooting
The Vertical Belt Pulley is squeaking as the Head moves vertically.
Lubricate the Vertical Belt Pulley: Vertical Belt Pulley Lubrication Instructions.
See:
Vertical Belt Tension Adjustment: CMC 9000, Z Series and the 8000+
Vertical Belt Tension Adjustment: CMC 8000, 8500 Series and the 8000RC
Vertical Belt Pulley Lubrication Instructions
Vertical Belt Pulley Replacement Instructions