Maintenance work on the carrier
7.5 Exhaust system with exhaust emission control
16.11.2018
Maintenance manual 3 302 756 en 7 - 35
GMK6400
7.5 Exhaust system with exhaust emission control
Overview To comply with the exhaust emission regulations, the truck crane may
only be run with the exhaust system with SCR catalytic converter
(SCR = Selective Catalytic Reduction).
The exhaust gas is cleaned with an AdBlue system (DEF). To do this,
AdBlue (DEF) (Diesel Exhaust Fluid) from the DEF tank is injected into
the exhaust system.
The engine output is automatically sharply reduced when there is not
enough AdBlue solution available. Driving with an empty AdBlue tank
will
invalidate the truck crane's licence for use on public roads;
à Operating manual, à Engine manufacturer's documentation.
AdBlue system
1 AdBlue tank
2 Pump unit
for delivering AdBlue to the dosing unit
on the diesel engine and for pumping
engine coolant for preheating the
AdBlue tank.
3 Air reservoir
4 Tank gauge, AdBlue tank
5 Warning lamp:
AdBlue system fault.
6 Diesel engine
with dosing unit for AdBlue (compressed
air supply) and a solenoid valve for
preheating the AdBlue tank using engine
coolant.
7 Injection nozzle
for injecting the mixture of AdBlue and
compressed air.
8 Exhaust pipes
9 Exhaust silencer
with SCR catalytic converter.
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