Skoda Octavia II 2004 Workshop Manual page 184

Octavia II 2004 ➤ , Octavia II 2010 ➤
2.0/100; 103 kW TDI PD Engine - Edition 01.2018
1.15.3 Check tightness (internally) of tandem
pump
Note
After re-installing a used tandem pump e.g. after changing or re‐
pairing a cylinder head and/or after changing a hopper motor the
tandem pump must absolutely be checked for internal tightness
between fuel and oil side. In case of leakage this can lead to a
fuel/oil mixing, which can cause an engine damage.
Special tools and workshop equipment required
♦ Tester , e.g. -V.A.G 1687-
Work procedure
– Disconnect the fuel intake hose (white marking) and the fuel
return-flow hose (blue marking) from the tandem pump.
– Close fuel return-flow connection at tandem pump with a dum‐
my plug. Secure the dummy plug with a spring strap clamp.
Prepare tester - V.A.G 1687- as follows:
– Unscrew pressure control valve -2- fully and close the valves
-3- and -4-.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted
– Connect the testing device -5- with a commercially available
unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability
connection for compressed air and a piece of fuel hose to the
with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�
connection of the fuel feed line for the tandem pump. Secure
hose with spring strap clip.
Note
The rotary knob must be pulled to the top in order to rotate the
pressure control valve -2-.
– Connect the pneumatic hose -1- (pneumatic support) at tester.
Note
If there is water in the transparent drain container, drain water via
the drain plug -6-.
– Open valve -3-.
– Set the pressure to 0,1 MPa (1,0 bar) with the pressure control
valve -2-.
WARNING
The maximum test pressure is 0.13 MPa (1.3 bar) and it must
not be exceeded.
178
Rep. gr.20 - Fuel supply system