Diesel Emissions Fluid Tank: Description and Operation

GF14.40-D-3001HU Component Description For AdBlue Tank

- with CODE (MG5) Engine OM 642 DE 30 LA, 140 kW (190 hp) 3800 rpm
- with CODE (MH1) Low-emission engine EPA 10/CARB
- with CODE (ZU7) National version for Canada

- with CODE (MG5) Engine OM 642 DE 30 LA, 140 kW (190 hp) 3800 rpm
- with CODE (MH1) Low-emission engine EPA 10/CARB
- with CODE (ZU8) National version for USA





Location

4 Selective Catalytic Reduction (SCR) catalytic converter
13 Filling line
14 Drain hose with mechanical shutoff valve
30 AdBlue(R) tank

The AdBlue(R) tank is located on the underbody of the vehicle on the right in the area of the SCR catalytic converter.





Location of the AdBlue(R) filler neck

1 AdBlue(R) filler neck
2 Cap

The AdBlue(R) filler neck is located in the engine compartment on the right. The reducing agent AdBlue(R) passes over the filling line into the AdBlue(R) tank.

Task

- Storage of the AdBlue(R) reducing agent
- Mount for the AdBlue(R) delivery module

Body

The AdBlue(R) tank is made of plastic and contains the following components:

- AdBlue(R) extraction tank
- AdBlue(R) tank heating element (R51)
- AdBlue(R) tank temperature sensor (R51b1)
- AdBlue(R) tank fill level sensor (B152)

The AdBlue(R) tank is fitted with drain hose with a mechanical shutoff valve for emptying.

During initial filling of the AdBlue(R) tank with AdBlue(R) reducing agent, ensure that the AdBlue(R) extraction tank is filled as well, otherwise, when AdBlue(R) is extracted later, air will be drawn in and it will not be possible to generate the system Body pressure of 5 bar. To do this, the AdBlue(R) tank must be filled completely so that the AdBlue(R) extraction tank is filled through the overflow hole.

When the AdBlue(R) reducing agent is being pumped, part of the AdBlue(R) reducing agent flows through a bypass in the AdBlue(R) delivery module back into the extraction tank. This ensures that the AdBlue(R) extraction tank remains sufficiently full.