Check pump module of exhaust aftertreatment system for fuel/oil residues

AR49.20-G-2047CH

Check pump module of exhaust aftertreatment system for fuel/oil residues

10.08.2018

Engine

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

with BlueTec

1

AdBlue® filter (pressure filter)

2

Test strips

A

Test strips without discoloration

B

Test strips with discoloration

 Warning

Risk of burn injuries and scalding when working on AdBlue(R) lines and the component parts attached to them. Risk of injury to skin and eyes when handling AdBlue(R). Risk of poisoning caused by swallowing AdBlue(R)

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

AS49.20-Z-0002-01A

Notes on use, material properties and handling of AdBlue®

AH14.40-N-0001-01A



Remove

1

Remove AdBlue® filter (1) of the pump module.



AP49.20-G-1481CH



Check

2

Rub test strip (2) firmly between the lamellae of the AdBlue® filter (1) and on the inside wall of the filter housing and the filter cup.



Service information: AdBlue tank filled with wrong fluid

SI14.40-G-0006DD

 If the test strip (2) is discolored, there are residues of oil, diesel, cold cleaning solvent, or other hydrocarbon compounds in the AdBlue®.

3

Replace all AdBlue® hose lines.

Only if the test strip is discolored (2).

4

Replace pump module.

Only if the test strip is discolored (2).

AR49.20-G-2010CH

5

Replace AdBlue® tank.

Only if the test strip is discolored (2).



Install

6

Install AdBlue® filter (1) of the pump module.



AP49.20-G-1481CH