Note
Adhere strictly to rules of cleanliness. No dirt must be allowed to
get into the disconnected fuel return lines or the open connec-
tions on the injectors under any circumstances.
– Install tester for fuel return system -VAS 6330- between re-
turn line connection on injector and return line.
– Start engine.
– Check pressure on pressure gauge.
◆
Specification: 8…14 bar
If the value does not match the specification, fit a new pressure
retention valve.
2
Checking components and func-
tions
WARNING
Adhere to the general safety regulations and the notes on
repair work on the engine!
The described component checks and functional checks are ap-
plicable for the series components and the current flow dia-
grams as of page
If components and electric circuits differ, observe the notes of
the respective industrial engine customer.
Checking fuel metering valve -N290-
.
Checking fuel pressure regulating valve -N276-
.
Checking fuel pressure sender -G247-
Checking injectors, cylinder 1...4 -N30...N33-
.
Checking engine speed sender -G28-
Checking Hall sender -G40-
Checking intake air temperature sender -G42-
Checking coolant temperature sender -G62-
.
Checking fuel temperature sender -G81-
.
Checking air mass meter -G70-
Checking throttle valve module -J338-
.
Industriemotoren - Industrial Engines 2009
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Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
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2 Checking components and functions
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