Volkswagen CJDA Workshop Manual page 377

1.6.2 Fuel system, engine codes CPYA, CPYB, CPYC, CPYD, CPYE
1 - Fuel tank
2 - Fuel filter
q With pre-heating
valve.
q Assembly overview
- fuel filter
⇒ P age
304.
3 - Supplementary fuel
pump -V393-
q Removing and in-
⇒ P age 313
stalling
q Checking
⇒ P age 314
4 - Filter strainer
5 - Fuel temperature
sender -G81-
q Checking
⇒ P age 409
6 - High-pressure pump
q After renewing, a
first fuel filling must
be performed (never
allow the pump to
run while it is still
empty)
⇒ P age
383.
q Removing and in-
⇒ P age 380
stalling
7 - Fuel metering valve
-N290-
q Must not be re-
moved.
⇒ P age 388
q Checking
8 - Fuel pressure regulating valve -N276-
q Checking fuel pressure regulating valve
q Checking return flow rate
q Removing and installing
9 - Fuel rail
10 - Fuel pressure sender -G247-
q Removing and installing
⇒ P age 394
q Checking
11 - Pressure retention valve
q The pressure retention valve maintains a residual pressure (for control purposes) of approx. 10 bar in
the return lines.
q This residual pressure is required for the control function of the piezo injectors.
q The pressure retention valve may only be renewed together with the fuel return lines.
q After replacement, engine must be run at idling speed for approx. 2 minutes to bleed fuel system.
q Check pressure retention valve
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
⇒ P age
⇒ P age 377
⇒ P age
377.
⇒ P age
379.
⇒ P age
385.
Industriemotoren - Industrial Engines 2009 ▶
391.
1 Repairing diesel direct injection system
3
361