Remove/install exhaust gas recirculation (AGR) differential pressure sensor

AR14.20-P-2000OID

Remove/install exhaust gas recirculation (AGR) differential pressure sensor

18.12.2018

Engine

656 in model 167

2

Electrical connector

3

Screw

4

Molded hoses

5

Clamps

6

Pressure lines

B28/18

Low-pressure exhaust gas recirculation differential pressure sensor

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

 Warning

Risk of burn injuries, suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust.

Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area.

AS49.00-Z-0001-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Remove upper firewall plate.

AR01.10-P-2405-02OID

2

Remove engine air intake duct downstream of air filter.

AR09.10-P-8130OID

 Installation: Only install upper engine cover after the leak test.

3

Remove bolt (3) .

 Bolt, differential pressure sensor to air intake duct

*BA07.04-P-1008-02A

4

Release and disconnect electrical connector (2).

5

Open clamps (5) and remove molded hoses (4) from pressure lines (6).


Only release clamps (5) of molded hoses (4) at pressure lines (6).
Loosening of the clamps on the low pressure exhaust gas recirculation differential pressure sensor (B28/18) causes hairline cracks to form on the low pressure exhaust gas recirculation differential pressure sensor (B28/18), thus leading to malfunctions.

 Installation: Install molded hoses (4) free of tension.
Replace clamps (5).

 Pliers for click clamps

*171589003700

6

Remove low-pressure exhaust gas recirculation differential pressure sensor (B28/18)

7

Install in the reverse order.

8

Read out and delete fault memory.



AD00.00-P-2000-06ME

 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

9

Carry out engine test run and check engine for proper leaktightness and leaktightness.

10

Install upper engine cover.

AR01.10-P-2405OID

 Sensors

Number

Designation

Engine 656

BA07.04-P-1008-02A

Bolt, differential pressure sensor to air intake duct

Nm

8