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Home >> BMW >> 2013 >> 740Lxi >> Repair and Diagnosis >> External Pages >> Different car >> Section 1035 (Fuel Supply System - Repair - F31) >> SCR Technology >> 16 19 010 Drawing off SCR active reservoir contents

16 19 010 Drawing off SCR active reservoir contents

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Special tools required: 

IMPORTANT: Ensure adequate ventilation in the workbay!
Avoid skin contact (wear gloves)!
Avoid eye contact (safety goggles)!
Urea/water mixture can escape when components carrying urea/water mixture are released. Have a collecting vessel ready.
Observe country-specific waste disposal regulations.
IMPORTANT: Maintain conditions of absolute cleanliness.
Connections and covers of lines carrying urea/water mixture must be cleaned thoroughly with water after each removal or before each installation!
Thoroughly clean the working area with water after repair work.
Use fluff-free cloths for cleaning.
Close connections and lines!
Thoroughly clean special tool with water after each use.

Necessary preliminary tasks: 

Unlock and disconnect snap fastener (1).

Unclip filler pipe from brackets (2).

Installation note: 

Check correct engagement of snap fastener (1) by attempting to pull.

Fig 1: Identifying Filler Pipe Brackets And Snap Fastener
G10102895Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Use extractor unit 2 302 782 (for 230V) or 2 302 919 (for 120V).
Attach adaptor hose 2 355 173 to the intake side of the extractor unit.
Before start-up of extractor unit urea/water mixture:
Comply with equipment
manufacturer's operating instructions and safety regulations.
Note extraction direction (see arrow in illustration)!
Fig 2: Attaching Adaptor Hose (2 355 173) To Extractor Unit (Intake Side)
G09915021Courtesy of BMW OF NORTH AMERICA, INC.

Feed adaptor hose 2 355 173 of the extractor unit into the filler pipe (1).

The extraction hose may need to be twisted when inserting it.

IMPORTANT: Insertion length of extraction hose 100 cm!
Fig 3: Installing Adaptor Hose (2 355 173) Of Extractor Unit Into Filler Pipe
G10102897Courtesy of BMW OF NORTH AMERICA, INC.

Draw off urea/water mixture.

NOTE: Do not reuse drawn-off urea/water mixture.