Front Heating and A/C Unit, Assembly (A/C System Servicing)

A/C System Servicing

Front Heating And A/C Unit, Assembly


CAUTION!
Before beginning repairs on the electrical system:
- Obtain the anti-theft radio security code.
- Switch the ignition off
- Disconnect the battery Ground (GND) strap.
- After reconnecting battery, recode and check operation of anti-theft radio. Also check operation of clock and power windows according to Repair Manual and/or Owner's Manual.


NOTE:
- Illustrated assembly from Manual A/C system.
- Except where noted, the basic assembly of Manual A/C and Climatronic heating and A/C units are the same.
- Illustrated components that are underlined can only be removed after removal of complete heating and A/C unit.
- Before proceeding with A/C refrigerant system servicing, always review safety measure.
- Discharge and evacuate A/C refrigerant system with kent More ACR4 or equivalent
- All opened refrigerant system components must be sealed against moisture and dirt contamination by appropriate sealing caps.

First do the following:
- Discharge A/C refrigerant system
- Drain coolant from cooling system


CAUTION!
Cooling system is pressurized when engine is warm. Before performing repairs, wear gloves, goggles and other appropriate protection while slowly and carefully releasing system pressure.


- Remove instrument panel
- Remove heating and A/C unit







1 - Fresh Air Blower -V2-
- When assembling, lightly coat fitting surfaces with adhesive/sealant AMV 176 000 05 or equivalent
2 - Fresh Air Bower Series Resistance with Fuse -N24-
3 - Housing, upper part
- With fresh/recirculating air flap
- When assembling, lightly coat fitting surfaces with adhesive/sealant AMV 176000 05 or equivalent
4 - Intake trim
5 - Evaporator
- With guide for evaporator temperature sensor probe
6 - Gasket
7 - Frame
- With recirculating air flap
8 - Fresh air/recirculating flap vacuum unit
- Flap in fresh air position when no vacuum is present
- Flap in recirculated air position when vacuum is present
9 - A/C Evaporator Temperature Switch -E33-
- Prevents evaporator icing
- Sensor tube depth : 33 m (13 in)
- Switching temperatures : opens below - 2 °C
10 - Housing, lower part
- When assembling, lightly coat fitting surfaces with adhesive/sealant AMV 176 000 05 or equivalent
11 - Double vacuum unit
- Manual A/C only
12 - Air distribution housing
13 - Vacuum unit
- for footwell/defrost flap
- Manual A/C only
14 - Heater core
- Install seals around entire circumference of heater core
- Always change coolant after repairs
15 - Gasket
16 - Temperature flap cable
- Manual A/C only
17 - Heating and A/C controls
- Manual A/C only
18 - Vacuum hose connection
- Manual A/C only