Q7 Quattro V6-3.6L (BHK) (2007)
Compressor Pulley: Service and Repair
Belt Pulley - Version 2, Removing From Compressor
Compressor Pulley
‹› A belt pulley is installed on compressors in a vehicle with 6 cyl. engine (compressor is driven via a shaft in vehicles with 8 cyl. engine).
‹› Different versions of the pulley are installed, depending on compressor construction type and engine version
Belt Pulley - Version 2, Removing from Compressor
‹› If overload safeguard of pulley triggers, check compressor for ease of motion before replacing the pulley, replace it completely if compressor
moves with resistance.
‹› The function of overload protection for pulley is described in applicable SSP.
‹› To remove belt pulley, it depends on engine version if it is necessary to remove compressor from engine => [ Compressor Bracket ] See: Service
and Repair/Compressor Bracket.
‹› The compressor can be removed and installed at the bracket without opening the refrigerant lines.
‹› Currently, compressor with belt pulley version "2" is installed in vehicles with 6 cyl. gasoline engine.
‹› The compressor can be removed and installed at the bracket without opening the refrigerant lines => [ Compressor Bracket ] See: Service and
Repair/Compressor Bracket.
‹› Mark direction of rotation of ribbed belt using chalk or felt-tip marker before removing. Reversing the direction of rotation of a run-in belt can
destroy the belt.
‹› Depending on engine and country version, different compressors are installed (6 or 8 cyl. engine, gasoline or diesel engine).
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Remove noise insulation
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Release tension on ribbed belt and remove it.
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If necessary, remove power steering pump (6 cyl. gasoline engine only).
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Remove bolt - A - (tightening torque 20 Nm).
‹› To loosen and tighten bolt - A -, counterhold it at drive plate - B - using a commercially available pin wrench - C - (pin diameter 5.0 mm).
‹› Bolt - A - is to be replaced (because of locking compound).
‹› Clean thread in compressor shaft before inserting new bolt.
‹› If belt pulley cannot be removed with compressor installed, remove compressor from engine => [ Compressor Bracket ] See: Service and
Repair/Compressor Bracket