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Routing for both ribbed belts
1 - Idler roller, top
2 - Ribbed belt pulley - generator
3 - Idler roller, bottom
4 - Ribbed belt for generator and coolant pump
5 - Ribbed belt pulley - A/C compressor
6 - Ribbed belt for A/C compressor
7 - Ribbed belt pulley - crankshaft
8 - Tensioning roller for ribbed belt - A/C compressor
9 - Tensioning roller for ribbed belt - generator and coolant
pump
10 - Ribbed belt pulley - coolant pump
5.3
A/C Unit
Special tools and workshop equipment required
♦ Hose Clamps, Up To 40 mm -3094- and Hose Clamps Up To
25 mm diameter -3093-
♦ Compressed air gun, commercially available
♦ Cooling System Tester -V.A.G 1274- (and corresponding
adapter)
Note
Remove the heater in the same way as the A/C unit. Naturally,
the items that affect components that are only present on the A/
C system are omitted.
Removal
– Protect driver and front passenger seats using seat covers.
– Switch off ignition.
– Discharge the refrigerant circuit. Refer to ⇒ Refrigerant R134a
Servicing; Rep. Gr. 00 ; Description and Operation (A/C Serv‐
ice Station).
– Disconnect the battery. Refer to⇒ Electrical system; Rep. Gr.
27 ; Removal and Installation .
Audi TT 2007 ➤
Heating, Ventilation and Air Conditioning - Edition 01.2011
108
Rep. Gr.87 - Air Conditioning