Diesel Emissions Fluid (DEF) System: Service and Repair

16 19 040 Removing And Installing/replacing SCR Filter







Special tools required:
- 16 1 130







IMPORTANT:
Ensure adequate ventilation in the place of work.
Avoid skin contact (wear gloves).
Avoid eye contact (protective goggles).
Urea/water mixture can escape when parts carrying urea/water mixture are released. Have a collecting container ready.
Observe country-specific waste disposal regulations.







IMPORTANT:
Maintain conditions of absolute cleanliness.
Connections and covers of urea/water-mixture- carrying lines must be cleaned thoroughly with water after each removal or before each installation.
Thoroughly clean the work area with water after repair work.
Use fluff-free cloths for cleaning (see ETK Electronic Parts Catalogue WAYPALL L20 cleaning cloths).
Seal off connections and lines with special tool 16 1 130.
Thoroughly clean special tool with water after each use.







Release screws (1 and 2).
Press thermal insulation (4) to one side slightly and feed out cover (3).

IMPORTANT: Catch and dispose of escaping urea/water mixture in a suitable container. Observe country-specific waste disposal regulations.







Release single-ear clip (1). Pull off hose.

Installation:
Replace single ear clips.

Unclip SCR filter (2) in direction of arrow.







Disconnect SCR filter (1) on pump unit.

Installation:
Check by pulling engagement of SCR filter connecting line (1).
Feed out SCR filter (2).







Disconnect line (1) on pump unit (2).







Connect urea/water mixture suction unit (refer to BMW Service Workshop Equipment) to connection (1).

IMPORTANT: Do not pressurise urea/water mixture suction unit.

With aid of BMW Diagnosis and Information System:
- Activate pump unit until urea/water mixture flows through suction line

Connect line to connection (1) and check correct seating by pulling.