106 Audi TT Quick Reference Specication Book • May 2009
Heating and A/C Components –
Tightening Torques
Component Nm
Fresh air intake cover to plenum chamber bolts 2.5
Fresh air intake grille to plenum chamber nuts 3.5
Coolant pipes to heat exchanger bolts 2.5
Expansion valve to heating and A/C unit bolt 10
Fresh air blower V2 bolt 1
Coolant pipe clamps 2
Connecting ange between heater core connections 2
Auxiliary heater heating element Z35 voltage supply and
ground connection mounting nut
6
Heating and ventilation unit cable bracket bolts 5
Assembly carrier bracket bolts 8
Heating and ventilation unit bracket bolts 10
A/C System – Tightening Torques
Component Nm
Shielding plate nut 6
Refrigerant lines to engine compartment bolts 12
Assembly carrier bracket bolts 8
Climatronic control module J255 with A/C control head
E87 to center instrument control panel bolts
2
A/C Refrigerant System – Tightening Torques
Component Nm
High pressure sensor to refrigerant line 8
A/C compressor to engine bolts 25
Refrigerant lines to A/C compressor bolts 25
Drive plate to A/C compressor, version 1 35
Drive plate to A/C compressor, version 2 30
Refrigerant lines to condenser bolts 12
Condenser to charge air cooler bolts 5
Fluid reservoir to condenser bolts 10
Refrigerant lines to expansion valve bolts 10