1996 Volkswagen Golf HEATER SYSTEMS DESCRIPTION & OPERATION ADJUSTMENTS

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Filed Under (volkswagen) by admin on 30-06-2011

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DESCRIPTION & OPERATION Heating and ventilation system is a blend type system. A heater control valve is not used. Coolant flows unrestricted through heater core. Interior temperature is regulated by a blend door which controls amount of air flowing through heater core. Blend door is operated by a cable connected to temperature control knob. Three knobs are used to control blower speed, air temperature, and air distribution. Fresh air blower has 4 speeds. Blower motor resistor is located on blower motor housing. ADJUSTMENTS MAIN SHUTOFF FLAP CABLE Install heater control panel. Adjust blower control knob to stop at position “0″. Connect main shutoff flap cable (Black sleeve) to main shutoff flap lever. Push lever in direction of arrow until it stops. See Fig. 1. Hold lever in this position, and install cable retaining clip. TEMPERATURE FLAP CABLE Install heater control panel. Adjust temperature control knob to full cold. Connect temperature flap cable (Blue sleeve) to temperature flap lever. Push lever in direction of arrow until it stops. See Fig. 2. Hold lever in this position, and install cable retaining clip. Fig. 2: Adjusting Temperature Flap Cable Courtesy of Volkswagen United States, Inc. FOOTWELL/DEFROST FLAP CABLE Install heater control panel. Adjust airflow distribution knob to defrost position (against stop). Connect footwell/defrost flap cable (Black sleeve) to footwell/defrost flap lever. Push lever in direction of arrow until it stops. See Fig. 3. Hold lever in this position, and install cable retaining clip. Fig. 3: Adjusting Footwell/Defrost Flap Cable

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2003 Pontiac Grand Prix Heater Core Replacement

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Filed Under (Pontiac) by admin on 15-04-2011

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Tools Required J 38185 Hose Clamp Pliers Removal Procedure 1. Remove the fuel injector sight shield (3.8L only). Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical-3.8L. 2. Drain the coolant. Refer to Cooling System Draining and Filling in Engine Cooling. 3. UseJ 38185 in order to position aside the heater hose inlet and outlet clamps at the heater core. 4. Disconnect the inlet and outlet heater hose from the heater core. 5. Remove the vacuum tank. Refer to Vacuum Tank Replacement in HVAC System – Manual. 6. Remove the floor carpet. Refer to Front Floor Panel Carpet Replacement in Interior Trim. 7. Remove the rear floor air outlet duct from the holes in the floor reinforcement. 8. Disconnect the rear floor air outlet duct from the heater core outlet cover. 9. Remove the bolts from the vaccum harness bracket and position bracket aside. Important: Position the heater core outlet cover downward and rearward in order to disconnect the cover from the rear area floor duct assembly. 10. Remove the heater core outlet cover screws. 11. Remove the heater core outlet cover. 12. Remove the heater core cover screws. 13. Remove the heater core cover. 14. Remove and discard the seals (1,2) from the heater core cover. 15. Remove the caulk (3) from the heater core cover. 16. Remove and discard the heater core outer seal (5) from the heater core. 17. Remove the heater core clamp screw (1). 18. Remove the heater core retaining clamp. 19. Remove the heater core pipe retainer clamp screw (2). 20. Remove the heater core from the HVAC lower case. 21. Remove the heater core pipe retainer clamp from the heater core pipes. 22. Remove and discard the heater core lower seal (4) from the HVAC case. 23. Remove and discard the heater core center seal (3) from the HVAC case. 24. Remove and discard the heater core upper seal (2) from the HVAC lower case. 25. Remove and discard the heater core side seals (1) from the HVAC lower case. Installation Procedure

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2000 Ford Expedition Evaporator Core REMOVAL AND INSTALLATION

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Filed Under (Ford) by admin on 04-04-2011

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Removal and Installation NOTE: If an A/C evaporator core leak is suspected, the A/C evaporator core must be leak tested before it is removed from the vehicle. For additional information, refer to Component Tests in Section 412-00. NOTE: Installation of a new suction accumulator is not required when repairing the air conditioning system except when there is physical evidence of system contamination from a failed A/C compressor or damage to the suction accumulator. 1. Recover the refrigerant. For additional information, refer to Section 412-00. 2. Remove the instrument panel. For additional information, refer to Section 501-12. 3. Remove the junction box splash shield, if equipped. 4. Disconnect the cable ends. 5. Remove the junction block bracket. 1. Disconnect the electrical connector. 2. Remove the screws. 3. Detach the pin-type retainers and remove the junction block bracket. 6. Using suitable tools, clamp off the heater core inlet and outlet hoses. 7. Gently push each heater hose towards the heater core, compress the clip, and disconnect the heater hoses from the heater core. For additional information, refer to Section 412-00. 8. Disconnect the refrigerant spring lock couplings from the evaporator inlet and outlet. For additional information, refer to Section 412-00. 9. Remove the screw and the RH demister adapter. 10. Remove the screws and remove the defroster duct and LH demister adapter as an assembly. 11. Remove the nut. 12. Remove the nut. 13. Disconnect the vacuum line from the parking brake release solenoid. 14. Disconnect the vacuum connector from the panel/floor vacuum control motor. 15. Disconnect the vacuum line. 16. Remove the screw. 17. Remove the screw. 18. Remove the nut.

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2000 Ford Expedition Auxiliary Climate Control DESCRIPTION AND OPERATION

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Filed Under (Ford) by admin on 21-03-2011

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An optional auxiliary air conditioning and heating system is available. The system is a one-piece unit that is located on the LH side of the vehicle between the side windows and the floorpan, behind the rear wheel well. The driver has primary control of the auxiliary air conditioning and heating system or can transfer control to a rear passenger control panel. All of the auxiliary A/C-heater system components are serviceable from the inside of the vehicle except the lines. Component Locations The auxiliary A/C and heating system has the following features: The auxiliary A/C and heating system is functioning whenever the instrument panel mounted A/C control is in any position except OFF. The auxiliary blower motor recirculates the air inside the vehicle. Outside air is not available to the auxiliary system. Air is cooled and dehumidified by the auxiliary A/C evaporator core only if the instrument panel mounted A/C control is adjusted to a position that requires A/C compressor operation. The temperature blend door and the A/C damper door are controlled by electric actuator motors. Movement of the auxiliary temperature control between COOL and WARM causes a corresponding movement of the temperature blend door to mix air flowing through and around the auxiliary heater core. Movement of the auxiliary mode control between PANEL and FLOOR causes a corresponding movement of the A/C damper door to direct air flow between the panel (headliner) registers and the floor duct. Blower Motor The auxiliary air conditioning system contains a blower motor which is controlled by the heater blower motor switch on the front or rear auxiliary A/C control. Control Assembly The auxiliary A/C system has dual controls for the driver and rear passengers consisting of temperature, blower speed, and mode. The front auxiliary A/C control is mounted in the overhead console or the front floor console. The rear auxiliary A/C control is mounted in a separate overhead console positioned on the roof trim panel or the rear of the front floor console. Front Auxiliary A/C Control

1993-2002 Volkswagen Golf, Jetta, GTI Cabrio A/C controls and mechanical components servicing

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Filed Under (volkswagen) by admin on 20-03-2011

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A/C and heating system components, engine compartment CAUTION! Parts marked with an asterisk (*) can be serviced only after the A/C refrigerant system has been discharged by a certified technician using EPA-approved refrigerant recovery and recycling equipment safety measures, A/C refrigerant system (R-134a), safety measures . Dust and pollen filter Where applicable 2- . Plenum cover Removing/installing 3- – -”> Evaporator water drain valve Located behind bulkhead insulation Removing/installing 4- . Heater core connections and vacuum hose guide 5- . Fresh Air/Recirculating Flap Two-Way Valve N63 Valve open when voltage applied Vacuum hose layout 6- . Coolant Fan Control (FC) Control Module J293 With fuse Fuse Strip S88 (1993 m.y.) With fuses Coolant Fan Second and Third Speed Fuse S107 and Coolant Fan First Speed and A/C Clutch Fuse S108 (1994 m.y. micro ) Connector terminal identification: micro 09.93 Fig. 5 Connector terminal identification of Coolant Fan Control (FC) Control Module J293 ( 09.93) 10.93 micro Fig. 6 Connector terminal identification of Coolant Fan Control (FC) Control Module J293 (10.93 ) 7- . Vacuum reservoir Insert vacuum hose 30 mm (1.2 in.) into reservoir Removing/installing Fig. 2 Removing and installing evaporator water drain valve Vacuum hose layout Fig. 7 Removing and installing vacuum reservoir

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