Section 12-03A: Air Conditioning System, Manual A/C-Heater
1996 F-150, F-250, F-350, F-Super Duty and Bronco, F-Super Duty Motorhome Chassis Workshop Manual
REMOVAL AND INSTALLATION

Ducts

The defroster and ventilation ducts are a two-piece, adhesive-bonded assembly that attaches to the instrument panel with screws.

Duct and Support Assembly





ItemPart NumberDescription
119B632A/C Accumulator Tube Support Clip
2Demister Hose Connector (Part of 19E630)
319E630A/C Side Window Demister and Hose (RH)
4Demister Duct (RH) (Part of 19E658)
519893A/C Register
615061A40Glove Compartment Door Latch Cover
77006115Glove Compartment Bumpers
81506024Glove Compartment Assembly
96106004Glove Latch Assembly
10N804A28-SGlove Compartment Bumpers
1115A563Glove Compartment Lamp and Catch Assembly
121504282Instrument Panel Pad and Retainer Assembly
131504810Instrument Panel Ash Receptacle Assembly
1419N236Auxiliary Power Point Socket Assembly
151501657Steering Column Opening Insulator
1604320Instrument Panel
1715044F80Instrument Panel Radio Mounting Bracket Assembly
1815047A30Instrument Panel Center Bracket
1914W163Fuse Block Bracket
2019E726Duct and Support Assembly
21Demister Duct (LH) (Part of 19E659)
2219E630A/C Side Window Demister and Hose (LH)
2318C367Defroster Nozzle Seal
2419C901Demister Seal
2519C901A/C Seal

 

Demister Nozzle and Duct

Removal

  1. Remove instrument panel. Refer to Section 01-12.

  1. Remove two nuts that attach the A/C side window demister and hose (19E630) and one nut plus one spring nut that attach the A/C side window demister and hose to the instrument panel (04320).

  1. Remove three push-screws that attach the A/C demister hose connector (19E680) to the structural duct assembly. Disconnect the flexible hoses that slide over the input end of each nozzle.

Installation

  1. To install the nozzles, hoses, and/or connector, install two attaching nuts to the leftA/C side window demister and hose and one nut to the rightA/C side window demister and hose.

  1. Attach three push-screws through the A/C demister hose connector and into the structural duct.

  1. Slide the demister hoses that were removed over their attaching locations.

  1. Install the instrument panel. Refer to Section 01-12.

 

Register

Removal

  1. Disconnect ground cable from battery negative terminal.

  1. Remove instrument panel. Refer to Section 01-12.

  1. Rotate instrument panel rearward as far as necessary to permit removal of register ducts from instrument panel.

  1. Remove windshield defroster hose nozzle (18490).

  1. Remove register duct attaching screws. Remove the duct.

Installation

  1. Position register ducts in instrument panel and install the attaching screws.

  1. Install windshield defroster hose nozzle.

  1. Rotate instrument panel forward and install as outlined.

  1. NOTE: When the battery (10655) has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module (PCM) (12A650) relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.

    Connect battery ground cable.

 

Heater Outlet Floor Duct

Removal

  1. Remove the A/C plenum vacuum harness (18C581) from the forward slot on the bottom edge of the heater outlet floor duct (18C433).

  1. Remove the plastic attaching screw from the bottom side of the heater air plenum chamber (18471).

  1. Remove the pushnut sleeve from the attaching hole.

  1. Disengage the heater outlet floor duct from the heater air plenum chamber.

Installation

  1. To install, position the heater outlet floor duct on the heater air plenum chamber and engage the lugs inside the heater outlet floor duct with their mating slots in the heater air plenum chamber. Tilt the heater outlet floor duct into place, then push in to secure engagement.

  1. Start the plastic screw into the pushnut sleeve. Then, install through the flange and into the attaching hole in the heater air plenum chamber. Be sure the attachment is secure.

  1. Clip the A/C plenum vacuum harness to the heater outlet floor duct.