Volkswagen CJDA Workshop Manual page 348

3
Industriemotoren - Industrial Engines 2009 ▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
– Connect charge air system tester -V.A.G 1687- to adapter
-1687/10- as shown in illustration.
– Connect compressed air hose -1- (compressed air supply) 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 test pressure must not exceed 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 listening and
touching, with commercially available leak detector spray or
using ultrasonic tester -V.A.G 1842-.
Note
◆ How to use the ultrasonic tester -V.A.G 1842-
instructions
◆ If leaks occur, when doing any repair work observe notes for
⇒ P age
charge air system
◆ Before removing the charge air system tester -V.A.G 1687-,
depressurise the test circuit by pulling the intake hose off the
adapter -1687/10-.
332 Repair Group 21 - Turbocharging/supercharging
⇒ operating
330.