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Remove/Install SCR Frame Module Control Unit - Ar14.40-D-2020S

ENGINES 642.898 in MODEL 906 

Fig 1: SCR Frame Module Control Unit Remove/Install Component Locations
G08211525Courtesy of MERCEDES-BENZ USA
REMOVE/INSTALL SCR FRAME MODULE CONTROL UNIT - ENGINES 642.898 IN MODEL 906

REMOVINGINSTALLING Remove/install     
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
1 Remove driver seat (2)   AR91.10-D-1010H
2 Remove covering from driver seat frame (3)    
3 Remove bracket (4) for relay from driver seat frame (3) and move to rear IMPORTANT Do not disconnect electrical leads.  
4 Expose AdBlue control unit (N141)    
5 Release electrical connector (5) and disconnect AdBlue control unit (N141)    
6 Unclip AdBlue control unit (N141) at catch hooks (arrows) of bracket (6)    
7 Remove AdBlue control unit (N141)    
8 Install in the reverse order    
DANGER Risk of burn injuries and scalding  when working at AdBlue lines and the components attached to them. Risk of injury  to skin and eyes when handling AdBlue. Risk of poisoning  caused by swallowing AdBlue Only pour AdBlue into suitable containers. Wait until the pressure is released before starting any work on the exhaust aftertreatment system. AS14.40-Z-0001-01A 
9 Fill AdBlue tank. When replacing AdBlue control unit (N141).
IMPORTANT Fill with new AdBlue.
Model 906.1/2 without code (KP2) AdBlue tank, 12 l, in engine compartment
 
    Model 906. with code (KP2) AdBlue tank, 12 l, in engine compartment AR14.40-D-2014-02A 
    Model 906.6/7 without code (KP2) AdBlue tank, 12 l, in engine compartment AR14.40-D-2014-02S 
    FLUID SPECIFICATION  
NOTES Notes on use, material properties and handling of AdBlue   AH14.40-N-0001-01AB 
10 Write fill level of AdBlue tank using STAR DIAGNOSIS in the AdBlue control unit (N141) When replacing AdBlue control unit (N141). AD00.00-D-2000-04SD
FILLING CAPACITY FOR BLUETEC DIESEL EXHAUST TREATMENT (SCR) - ENGINE 642 IN MODEL 906

Number Designation Engine 642.898 without code KP2 in model 906 Engine 642.898 with code KP2 in model 906
BF14.40-N-1001-01A AdBlue tank and filler line Filling capacity for the initial filling Liters 19.2 12.8
Filling capacity for a service filling Liters - -
Specifications for service products Sheet BB00.40-P-0352-01A BB00.40-P-0352-01A