Section 12-02: Heating and Defrosting
1993 Mustang Workshop Manual
REMOVAL AND INSTALLATION

Panel-Defrost Door

 

Removal

  1. Remove A/C plenum chamber duct as outlined.
  1. Move panel-defrost door from door crank using a screwdriver to disengage locking tab from shaft. Pull door from crank.
  1. To replace door crank, remove spring nut retaining crank to vacuum motor arm. Then, disengage vacuum motor arm from door crank and remove crank from plenum chamber.
 

Installation

  1. Place door crank in plenum chamber duct. Place flatwasher on crank end of shaft, then, the vacuum motor arm. Install a new spring nut (383358-S) to retain vacuum motor arm on door crank.
  1. Position A/C defrost door on crank so door is on same side of crank as vacuum motor. Push door on shaft engaging locking tab with shaft.
  1. Install plenum chamber duct. Refer to Panel-Defrost Door Vacuum Motor, Installation.