Volkswagen CJDA Workshop Manual page 394

3
Industriemotoren - Industrial Engines 2009 ▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
Caution
Always read rules for cleanliness and instructions for
working on fuel system
Follow these instructions before starting work and while
working on the fuel system.
Special tools and workshop equipment required
◆ Engine bung set -VAS 6122-
Removing
– Clean threaded area around regulating valve (e.g. with com-
mercially available cold cleaning solvent) before removing.
Under no circumstances may dirt enter the hole of the fuel
rail.
Note
◆ Clean carefully; cleaning solvent must not enter the electrical
connector.
◆ The fuel pressure regulating valve -N276- cannot be re-
used.
◆ Fuel pressure regulating valve -N276- must be renewed
each time after removing.
– Dry off fuel pressure regulating valve -N276-.
– Disconnect electrical connector from fuel pressure regulating
valve -N276-.
– Counterhold at housing hexagon and loosen union nut. Then
unscrew and remove by hand.
– Extract dirt from fuel rail bore (threads and sealing surface).
Do not use tools or other instruments for this purpose.
Note
Seal off fuel rail bore immediately with a suitable plug to prevent
dirt from entering.
Installing
Note
◆ Check that sealing surfaces (deformable sealing lip) and
threads on fuel pressure regulating valve -N276- are undam-
aged.
◆ Also check sealing surface of fuel rail bore.
◆ Thread on fuel pressure regulating valve -N276- must be
free of oil and grease.
– Screw on union nut by hand.
– Align fuel pressure regulating valve -N276- so that connect-
ing wire is free of mechanical tension after electrical connec-
tor is attached.
– Counterhold at housing hexagon and tighten union nut.
⇒ P age
Specified torque
378 Repair Group 23 - Mixture preparation - injection
⇒ P age
354.
362.