Coolant Pump Toothed Belt, Checking

Procedure 

-- Loosen the hose clamps - 1 and 2- and remove the air duct pipe.

-- Free up air guide hoses from the air duct pipe.

Fig 1: 3.0L TFSI CTUC/CTUD Engine Compartment Overview

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-- Disconnect the connector - 1-.

Fig 2: Unlocking Hose Clamp Catches

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-- Release the catches - arrows-, and remove the air duct pipe.

-- Push the release button, and remove the EVAP canister hose - 1-.

Fig 3: Identifying Hose Bolts

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-- Remove the bolts - arrows- and remove the crankcase ventilation hose.

-- Free up the wiring harness - arrows-.

Fig 4: Identifying Upper Belt Cover And Bolts

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-- Remove the bolts - 1 and 3- and remove the toothed belt guard - 2- for the coolant pump toothed belt.

-- Turn the crankshaft at the crankshaft belt pulley bolt in the direction of engine rotation and then check the entire toothed belt for the following conditions:

Fig 5: Inspecting Timing Belt For Damage, Wear, and Proper Operation

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• Cranks, cross-sectional breaks, tears (on side of cover) - arrow-
• Lateral movement
• Fraying of cords
• Tears (in tooth base) - arrow-
• Separation (toothed belt body, belt cords)
• Surface cracks (plastic shroud)
• Oil or grease contamination

Assembly Is Done In The Reverse Order.