Disassembling Front A/C Unit
Disassembling Front A/C Unit
• Depending on the production date, there can be different versions of the levers and connecting elements on the A/C unit. Refer to Electronic Parts Catalog.
• Currently the evaporator is not available for all versions as a replacement part. Refer to Electronic Parts Catalog (ETKA). If the evaporator is not available as a replacement evaporator, the A/C unit must be removed. Refer to => [ Front Heating and A/C Unit ] Front Heating and A/C Unit and the evaporator housing with the series evaporator must be replaced entirely. Refer to => [ Evaporator Housing ] Evaporator Housing.
Interchange of the wire connections to the temperature sensors or the connectors at the control motors results in problems regarding the regulation of the A/C system.
• Interchanged connectors at the control motors or the temperature sensors are not identified as malfunctions by the Climatronic control module (J255).
• Prior to disconnecting connectors or removing electrical components, clearly label them in order to rule out confusion.
• Removal and installation, refer to => [ Front Heating and A/C Unit ] Front Heating and A/C Unit.
• Refer to => [ Removing Components From Front A/C Unit ] Removing Components From Front A/C Unit.
1 Air Distributor Housing Of The Front A/C System
• Do not disassemble further.
• Different versions in vehicles with and without an auxiliary air heater control module (J604) (with an auxiliary heater heating element (Z35) ). Refer to Electronic Parts Catalog.
• Apply a small amount of grease (G 000 150) to the cam plate guides, the shaft bearings, the toothed segment as well as to the pins on the door levers. Refer to Electronic Parts Catalog).
2 Control Element
3 Temperature Doors In The Air Duct To The Vents To The Rear A/C Unit/Rear Air Distributor Housing
• These doors serve the function of a cold and warm air door for the air to the rear air distributor housing/rear A/C unit.
• The right temperature door and left temperature door are connected via the shaft.
4 Air Doors In The Vents To The Rear A/C Unit/Rear Air Distributor Housing
• The right door and left door are connected via the shaft.
5 Vent To The Rear A/C Unit/Rear Air Distributor Housing
6 Cover For The Refrigerant Pipes Leading To The Evaporator
• Removing and installing, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.
• Different versions (due to different types of connection of the refrigerant pipes on the standard production evaporator and the replacement evaporator). Refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.
• The cover, which is installed with the replacement evaporator, is not currently included within the scope of delivery for the replacement evaporator.Refer to Electronic Parts Catalog (ETKA) (rework the series cover, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed).
• Ensure proper attachment to the evaporator housing, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.
7 Grommet
• For sealing the opening through the plenum chamber rear wall for the refrigerant lines.
• With support ring for sealing in the plenum chamber rear wall, refer to => [ Front Expansion Valve Refrigerant Lines, Disconnecting ] Front Expansion Valve Refrigerant Lines, Disconnecting.
• Removing and installing, refer to => [ Evaporator Housing ] Evaporator Housing.
8 Evaporator Housing
• With the evaporator installed by the manufacturer.
• Different versions of the evaporator from the manufacturer and the replacement evaporator, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.
• Do not disassemble further, refer to => [ Evaporator Housing ] Evaporator Housing.
• Remove and install the evaporator, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.
• Removal and installation, refer to => [ Front Heating and A/C Unit ] Front Heating and A/C Unit.
9 Screw
10 Refrigerant Pipe To The Replacement Evaporator
• Included in the replacement evaporator kit. Refer to Electronic Parts Catalog.
• Removing and installing, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.
• Currently the evaporator is not available for all versions as a replacement part. Refer to Electronic Parts Catalog (ETKA). If the evaporator is not available as a replacement evaporator, the A/C unit must be removed and the evaporator housing with the series evaporator must be replaced entirely. Refer to => [ Evaporator Housing ] Evaporator Housing.
11 Refrigerant Pipe To The Replacement Evaporator
• Included in the replacement evaporator kit. Refer to Electronic Parts Catalog.
• Removing and installing, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.
• Currently the evaporator is not available for all versions as a replacement part. Refer to Electronic Parts Catalog (ETKA). If the evaporator is not available as a replacement evaporator, the A/C unit must be removed and the evaporator housing with the series evaporator must be replaced entirely. Refer to => [ Evaporator Housing ] Evaporator Housing.
12 O-ring Seal
• Replacing.
• Included in the replacement evaporator kit. Refer to Electronic Parts Catalog.
• Coat lightly with refrigerant oil prior to installation, refer to => [ Refrigerant Circuit O-rings ] Refrigerant Circuit O-rings.
13 O-ring Seal
• Replacing.
• Included in the replacement evaporator kit. Refer to Electronic Parts Catalog.
• Coat lightly with refrigerant oil prior to installation, refer to => [ Refrigerant Circuit O-rings ] Refrigerant Circuit O-rings.
14 Bracket For The Refrigerant Pipes To The Replacement Evaporator
• Included in the replacement evaporator kit. Refer to Electronic Parts Catalog.
• Removing and installing, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.
15 Screw
• Included in the replacement evaporator kit. Refer to Electronic Parts Catalog.
• Removing and installing, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.
16 Replacement Evaporator
• Delivered as replacement part with various components needed for installation (refrigerant pipes, O-ring seals, etc.). Refer to Electronic Parts Catalog.
• Check glued-on foam seals for damage and proper adhesion, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.
• Removing and installing, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.
• Currently the evaporator is not available for all versions as a replacement part. Refer to Electronic Parts Catalog (ETKA). If the evaporator is not available as a replacement evaporator, the A/C unit must be removed and the evaporator housing with the series evaporator must be replaced entirely. Refer to => [ Evaporator Housing ] Evaporator Housing.
17 Covers For Replacement Evaporator
• Included in the replacement evaporator kit. Refer to Electronic Parts Catalog.
• Glued in during installation of the replacement evaporator in the evaporator housing, refer to => [ Front Evaporator With A/C Unit Installed ] Front Evaporator With A/C Unit Installed.