Remove/install SCR AdBlue(R) fill level and temperature sensor with integrated AdBlue(R) heating element

AR49.20-G-2044CH

Remove/install SCR AdBlue(R) fill level and temperature sensor with integrated AdBlue(R) heating element

10.08.2018

Engine

457.9, 458.9, 541.9, 542.9, 941.9, 942.9 in model 000.001

with BlueTec

1

Cover

2

AdBlue® tank

3

Insulating tubing

4

Insulating tubing

5

Coolant line

6

AdBlue® line

7

AdBlue® line

8

Coolant line

9

Locking ring

10

Electrical connector

17

AdBlue® fill level and temperature sensor

9

Locking ring

14

Locking claw

A

Locked position "Open"

11

Claw wrench

15

Catch hook

B

Locked position "Closed"

12

Toggle

16

Sealing ring

13

Opening

17

AdBlue® fill level and temperature sensor

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

 Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

 Warning

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

Pour AdBlue into suitable containers only. Wait until the pressure is released before starting any work on the exhaust aftertreatment system.

AS14.40-Z-0001-01A

Notes on use, material properties and handling of AdBlue®

AH14.40-N-0001-01A

 

Remove/install

1

Switch off ignition.

2

Release pressure in coolant circuit.

 See information from body manufacturer.

3

Remove cap (1).

4

Open insulating hoses (3, 4) to a length of approx. 10 cm and push back.

 Roller tongs

*950589013700

5

Clamp off coolant lines (5, 8) with clamping devices and detach from the line fittings on the AdBlue® container (2).

 Clamp

*000589543700

6

Clamp off AdBlue® lines (6, 7) with clamping devices and detach from the line fittings on the AdBlue® container (2).

 Clamp

*000589543700

7

Disconnect electrical connector (10).

 Installation: Replace cable tie.

8

Clean AdBlue® container (2) in the area of the AdBlue® fill level and temperature sensor (17).


No soiling may enter the AdBlue® container (2).
Otherwise, failure or malfunction of the exhaust aftertreatment system may occur.

9

Insert claw wrench (11) into openings (13) on locking ring (9).

 Claw-type wrench

*001589000700

10

Insert breaker bar (12) in the claw wrench (11) and turn locking ring (9) counterclockwise until the locked position "open" (A) is reached.

 This requires a high amount of force. The locking ring (9) engages and disengages abruptly.
Do not insert an extension between the locking handle (12) and the   claw wrench (11).

 Installation: Turn locking ring (9) clockwise until the catch hooks (15) lie on the recesses of the fastening claws (14), locked position "closed" (B).

11

Remove locking ring (9).

12

Remove AdBlue® fill level and temperature sensor (17).

 Installation:
The specified grease must be used.
Otherwise, damage can occur to metering device.

 Installation:
Use the grease very sparingly.
Otherwise, metering duct inside metering device can clog.

 Installation: Clean contact surfaces of the sealing ring (16) with a clean rag and water. Install new sealing ring (16) and coat with a thin layer of grease before attaching.

ABS sensor grease

*BR00.45-Z-1019-06A

13

Install in the reverse order.

14

Check and, if necessary, correct the coolant level.



Coolant specifications

BB00.40-P-0310-01A

15

Start engine.

 See information from body manufacturer.

16

Check AdBlue® lines (6, 7) in the area of the connection fittings for leak tightness and switch off engine.

 Visual inspection only.

17

Check coolant lines (5, 8) in the area of the connection fittings for leak tightness.

 Visual inspection only.

Repair materials

Number

Designation

Order number

BR00.45-Z-1019-06A

ABS sensor grease

A 000 989 62 51 10