Section 12-03A: Air Conditioning System
1993 Mustang Workshop Manual
REMOVAL AND INSTALLATION

Instrument Panel Register Housing, Door, and Thumbwheel Assembly

 

Removal

  1. Remove instrument panel register louver assembly as outlined.
  1. Using a screwdriver, pry two upper and two lower tangs in housing out of their seated positions in instrument panel.


Register Housing, Door and Thumbwheel Assembly




  1. Pull housing out of opening in instrument panel.
  1. If thumbwheel is to be removed, insert a screwdriver between wheel and housing and twist so that wheel and wheel retainer will be pressed off stub shaft.
  1. An arm, which is integral with wheel, has a tang near its rear edge which rides in an arc-shaped slot in register door to open and close door. When thumbwheel and retainer are forced off stub shaft, it frees tang from slot in register door. To remove door, flex it so that retaining tang in each upper corner of door is pulled out of its mounting hole in register housing.
 

Installation

  1. Position door in register housing. Flex door so that its mounting tangs may be inserted into holes in register housing.
  1. Position thumbwheel and retainer over stub shaft in housing. Engage tang on thumbwheel arm in arc-shaped slot in door. Press thumbwheel and retainer into a fully seated position on stub shaft. Rotate wheel to ensure that register door operates properly.
  1. Insert louver into register housing and press inward until it fully engages with retainer in each side of housing.