Withdrawal
Instruction. Below is a description of the procedure for vehicles with air conditioning. On vehicles with the Telematik system, before disconnecting the battery, activate the service mode of the Teiematik control unit - radio, telephone, navigation.
Disconnect the ground wire in the battery with the ignition off. Wash the outside of the hood and wipe with suede. Unlock the service cover from the inside. Unlock bonnet -arrows- and pull forward slightly. Pull bonnet cover -VAS 6011- onto bonnet.
Remove the hood.
Detach canister solenoid valve 1 -N80- -item 1- with holder from air duct. Remove air duct -2-, to do this release spring clips using hose clamps -VAG 1921-. Remove air duct.
Unscrew bolts -2-. Remove water trap -3- in -direction of arrow-. Detach air intake hose -6- for intake air heating from warm air shield. Loosen bolt -5- on intake air heater -4-. Detach hose -1- from lock carrier and air intake housing. Mark the direction of rotation of the V-ribbed belt with chalk or felt-tip pen. Reversing the running direction of a previously used belt can damage it.
To loosen the tension of the V-ribbed belt, turn the tensioner in -arrow- with a ring spanner. Secure poly V-belt tensioner with drift -T10060 A- in holes. Remove poly V-belt.
Unscrew terminal wire 30/B+ -pos. 1- from the generator. Disconnect connector -2-.
Remove alternator mounting bolts -1- and -2-.
Release retaining clips -arrows- and remove toothed belt cover -1-. Remove the alternator in an upward direction.
If the alternator is clamped in the bracket, tighten the fastening bolts 2 turns again. Gently tap the bolt heads with the flat surface of a hammer to unlock the alternator mounting bushings.
Installation
Installation in the reverse order, while taking into account the following: to facilitate the installation of the generator, slide the fastening bolts a little back on the bushings. This should facilitate the movement of the alternator fastening bushes, since otherwise the clamping force of the bushing, despite the corresponding torque, is too small. Pay attention to the correct seating and running of the V-ribbed belt.
Poly V-belt travel on vehicles with air conditioning
1. Belt pulley crankshaft
2. Tension roller
3. Alternator pulley
4. Air conditioning compressor pulley
5. V-ribbed belt
Slide the V-ribbed belt onto the crankshaft and alternator pulleys. On the air conditioning compressor pulleys, install the V-ribbed belt last. Unload tensioner and remove drift -T10060 A- from bores. Check the correct installation of the V-ribbed belt. Connect battery. Start engine and check belt movement.
Tightening torques:
- Generator to holder: 25 Nm
- Terminal 30/B + to alternator: 16 Nm
- Intake air heater to lock shelf: 3.5 Nm
- Air hose to lock shelf: 2.5 Nm
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