Component overview
WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2009 Audi S4, 2009 Audi A4, 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
HD = High pressure side
ND = Low pressure side
1 - A/C Compressor Regulator Valve N280
- Checking activation and function Vehicles with 4 or 6 cyl. engine (compressor drive via a belt)
2 - Compressor
- Removing compressor from bracket/reinstalling → Compressor, removing and installing from bracket and Vehicles with 4 or 6 cyl. engine (compressor drive via a belt)
- When installing refrigerant lines and corresponding bracket, make sure there is sufficient distance between belt, bracket and pulley.
- Type of compressor differs depending on engine (installed to right or left of engine)
- Different types of compressor are installed depending on country version (e.g. "Denso" type designation "6 SEU" for Europe and "7 SEU" for hot countries)
3 - Belt pulley/compressor drive unit to engine
- Replacing belt pulley → Belt pulley/drive unit of compressor, replacing
- Removing and installing ribbed belt
Vehicles with 4 or 6 cyl. engine (compressor drive via a belt) and →
- 13 - ENGINE - CRANKSHAFT, CYLINDER BLOCK for 1.8 LITER 4-CYL. 5V TURBO ENGINE MECHANICAL, ENGINE CODE(S): AMB
- 13 - ENGINE - CRANKSHAFT, CYLINDER BLOCK for 2.0 LITER 4-CYL. 4V TURBO ENGINE MECHANICAL, ENGINE CODE(S): BPG, BWT
- 13 ENGINE - CRANKSHAFT, CYLINDER BLOCK for 3.0 LITER 6-CYL. 5V ENGINE MECHANICAL, ENGINE CODE(S): AVK, BGN
- 13 - ENGINE - CRANKSHAFT, CYLINDER BLOCK for 3.2 V6 4V ENGINE MECHANICAL, ENGINE CODE(S): BKH
- 13 - ENGINE - CRANKSHAFT, CYLINDER BLOCK for 4.2 LITER V8 4V ENGINE MECHANICAL, ENGINE CODE(S): BNS
- 13 - ENGINE - CRANKSHAFT, CYLINDER BLOCK for 4.2 LITER V8 5V ENGINE MECHANICAL, ENGINE CODE(S): BHF
- Ribbed belt assignment
- Checking and replacing compressor drive unit → Compressor drive unit, checking, replacing
NOTE:
- A rubber element is installed between pulley/drive unit and drive shaft of compressor to protect belt/drive pinion unit in the event of compressor blockage or stiffness.
- If the compressor is not operating smoothly, the rubber element interrupts power transmission to the compressor.
- A rubber element is installed between the engine and compressor to protect the drive pinion unit in the event of compressor blockage or stiffness.
- The rubber element absorbs any vibration occurring during compressor operation (damper function in the case of torque fluctuations).
4 - Oil drain plug
5 - Pressure relief valve
6 - Circuit with valve
7 - High Pressure Sensor G65 Vehicles with 4 or 6 cyl. engine (compressor drive via a belt)
- Removing and installing → High Pressure Sensor G65, removing and installing
- Checking signal
8 - Condenser
9 - Closing cap
- With seal
- Reinstall after using service valve
10 - Service connection
- High pressure side
- For measuring, discharging and filling
11 - Bolts in refrigerant line
12 - Restrictor
13 - evaporator
14 - Service connection
- Low pressure side
- For measurement and drainage
15 - Closing cap
- With seal
- Reinstall after using service valve
16 - Catch