Maintenance work on the carrier
7.5 Exhaust system with exhaust emission control
07.12.2017
Maintenance manual 3 302 649 en 7 - 33
GMK4090
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 treated using an AdBlue system. AdBlue
For this, (DEF) (Diesel Exhaust Fluid) from the AdBlue 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 with insulation hood
2 Pump unit
for pumping AdBlue to the dosing unit
on the diesel engine and for pumping
engine coolant for preheating the
AdBlue tank.
4 Tank gauge, AdBlue tank
3 Tank gauge, AdBlue tank
with warning symbol
8 Diesel engine
with dosing unit for AdBlue (compressed
air supply) and a solenoid valve for pre-
heating the AdBlue tank using engine
coolant.
6 Injection nozzle
For injecting the mixture of
AdBlue and compressed air.
7 Tail pipes
9 Exhaust silencer
with SCR catalytic converter
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