CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
– Release clips -arrows- air duct at the bottom and remove duct.
– Detach air duct at bottom together with air hose.
– Open latch -1-, unclip fuel lines -2- and slacken bolts -3-.
– Loosen clip -arrow- and remove charge air duct.
– Seal connection for charge air duct with plug from engine bung
set - VAS 6122- .
Installing:
Install in reverse order of removal.
2.10
Checking charge air system for leaks
Special tools and workshop equipment required
♦ Charge air system tester - V.A.G 1687-
♦ Adapter - V.A.G 1687/5-
– Remove noise insulation ⇒ General body repairs, exterior;
Rep. gr. 50 ; Noise insulation .
456
Rep. gr.21 - Turbocharging/supercharging
CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
– Release clip -A- and detach hose -B- from charge air pipe.
– Fit adapter - V.A.G 1687/5- onto charge air hose -A- and turn
adapter through approx. 90° -B-.
Prepare charge air system tester - V.A.G 1687- as follows:
– Turn pressure control valve -2- anti-clockwise onto stop.
– Close valves -3- and -4-.
Note
To turn the pressure regulating valve -2- the knob must be pulled
upwards.
– Connect charge air system tester - V.A.G 1687- as shown.
2. Charge air system
457
CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
– Connect compressed air hose -1- (compressed air source) to
charge air system tester - V.A.G 1687- .
Note
If there is water in the sight glass, drain at water drain screw -6-.
– Open valve -3-.
– Adjust pressure to 0.5 bar with pressure regulating valve -2-.
Caution
The pressure must remain at or below 0.5 bar! If the pressure
is too high this can cause damage to the engine.
– Open valve -4- and wait until the test circuit is filled. If neces‐
sary readjust pressure to 0.5 bar.
– Check the charge air system for leaks by hearing, touching,
with commercially available leak detector spray or using ultra‐
sonic tester - V.A.G 1842- .
Note
♦ Fitting hose connections with plug-in connectors ⇒ page 431
♦ A small amount of air escapes through the valves and enters
the engine. Therefore a holding pressure test is not possible.
♦ Ultrasonic tester - V.A.G 1842- ⇒ operating instructions
♦ Depressurise test circuit by detaching coupling from adapter -
V.A.G 1687/5- before removing adapter.
♦ Hose connections and hoses for charge air system must be
free of oil and grease before assembly.
458
Rep. gr.21 - Turbocharging/supercharging
2024 VW Passat Owner's Manual
VW Passat B7 Service & Repair Manual
VW Passat B6 Service & Repair Manual
