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5
Alternator
⇒ “5.1 Checking generator”, page 11
⇒ “5.2 Removing and installing alternator”, page 11
⇒ “5.3 Fixing the B+ wire to the AC generator”, page 13
⇒ “5.4 Checking the carbon brushes of the AC generator”,
page 13
⇒ “5.5 Removing and installing the Bosch voltage regulator”, page
14
⇒ “5.6 Removing and installing the Valeo voltage regulator”, page
14
⇒ “5.7 Removing and installing V-ribbed belt pulley on alternator”,
page 15
⇒ “5.8 Removing and installing the V-ribbed belt pulley with free
wheel”, page 15
5.1
Checking generator
The AC generator can be checked with the ⇒ Vehicle diagnostic
tester in the function “Targeted fault finding” under Body / Elec‐
trical system / 27 - Starter, voltage supply / electrical components /
AC generator - C- .
5.2
Removing and installing alternator
Removing
– Disconnect battery earth strap
⇒ page 2
.
– Remove the V-ribbed belt ⇒ Engine; Rep. gr. 13 .
Vehicles with TDI engines with common rail injection:
– Remove the fuel filter ⇒ Engine; Rep. gr. 20 and lay it to the
side (do not detach hoses).
– Remove charge air hose and charge air pipe ⇒ Engine; Rep.
gr. 21 .
Vehicles with TDI engines with Common Rail injection and 1.2/1.4
TSI:
– Remove noise insulation ⇒ Body Work; Rep. gr. 50 .
– Remove radiator fan ⇒ Engine; Rep. gr. 19 .
– Remove AC compressor (do not open the refrigerant circuit)
and secure to the side so that the intake hoses are not exces‐
sively strained ⇒ Heating, Air Conditioning; Rep. gr. 87 .
– 1.2 TSI engine - remove guide pulley ⇒ Engine; Rep. gr. 13 .
Vehicles with 1.6 - 75 kW/2.0 FSI engines - AC generator secured
from the front side:
– Remove tensioning pulley ⇒ Engine; Rep. gr. 13 .
All vehicles:
Octavia II 2004 ➤ , Octavia II 2010 ➤
Electrical system - Edition 12.2013
5. Alternator
11