q
q
Removing and installing
9 - Fuel rail
10 - Fuel pressure sender -G247-
q
Removing and installing
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
.
12 - Injectors (piezo injectors)
q
Injector, cylinder 1 -N30-
q
Injector, cylinder 2 -N31-
q
Injector, cylinder 3 -N32-
q
Injector, cylinder 4 -N33-
q
Removing and installing
q
Checking
3
Industriemotoren - Industrial Engines 2009
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Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
360
Repair Group 23 - Mixture preparation - injection