Removing and installing alternator, vehicles with 4-cylinder TSI petrol engine — VW

Removing and installing alternator, vehicles with 4-cylinder TSI petrol engine
Caution
When doing any repair work, especially in the engine compartment, pay attention to the following due to the cramped conditions:
Route electrical wiring so that original wiring layout is restored.
Make sure there is adequate clearance from all moving or hot components.
Alternator on vehicles with Start/Stop system:
Until now the alternator and the voltage regulator were connected together via their own wires to the engine and onboard supply control unit. For vehicles with Start/Stop system, the information transmission occurs via a LIN data bus to the diagnostic interface for data bus. Via the CAN data bus, it supplies information to other control units such as the engine control unit.
Caution
To disconnect and reconnect the battery, the procedure described in the workshop manual should be strictly adhered to
Chapter
.
Special tools and workshop equipment required
Torque wrench
V.A.G 1331
Bit
T40098
Hose clamps up to 25 mm.
3094
Removing:
Switch off ignition and all electrical loads, and pull out ignition key.
Disconnect battery
Chapter
.
Loosen poly V-belt
Power unit
Rep. gr.
13
Dismantling and assembling engine
.
Unscrew hose connection on charge pressure pipe
2
and pull off. Unscrew bolt
1
and place charge pressure pipe to one side.
Clamp off coolant hose on upper radiator connection using
hose clamps up to 25 mm
3094
and pull off.
Unscrew securing bolts
arrows
at top of alternator, and place bracket with radiator hose to one side.
Release and disconnect connector
1
.
Unscrew securing bolts
arrows
at bottom of alternator.
Swing alternator to side.
Unscrew positive connection
2
.
Remove alternator upwards.
Installing:
Install in the reverse order of removal. When doing this, note the following:
Caution
When fitting used poly V-belts, take note of the direction of rotation as marked during removal!
Before installing poly V-belt, ensure that all ancillaries (alternator, air conditioner compressor) are secure.
When fitting belt, ensure that poly V-belt seats correctly in pulleys!
Tighten threaded connections to specified torque given in assembly overview
Chapter
.
Connecting battery
Chapter
.
Start engine and check belt running.