Shown with engine 642 |
1 | Clip |
2 | Metering valve |
3 | Exhaust pipe |
4 | Electrical connector |
5 | Line |
D49.20-0024-06
Danger | Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. | |
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. | |
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. | |
Warning | Risk of injury. Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | |
Topical note | Notes on avoiding damage through contamination and foreign objects | ||
Topical note | Notes on use, material properties and handling of NOx reducing agent | ||
Topical note | Information on preventing damage to electronic components due to electrostatic discharge | ||
| Remove/install | ||
1.1 | Raise vehicle. | Engine 642, 651 in model 907 | |
Topical note | Special instructions for lifting and supporting vehicle | ||
1.2 | Remove the underfloor paneling on the right. | Engine 642, 651 in model 907 | |
Installation: Do not install the underfloor paneling on the right until after you have performed a leak test. | |||
2 | Unscrew the bolt for the clamp (1). | Clamp, metering valve to SCR catalytic converter | |
3 | Open the clamp (1) and remove the metering valve (2). | Installation: Replace clamp(1). Make sure that the metering valve (2) is correctly positioned. The catch must be in the slot on the exhaust pipe (3) of the SCR catalytic converter. | |
4 | Disconnect electrical connection (4). | ||
5 | Remove metering valve (2). | | |
For this purpose, release and remove line (5). Seal connections. | |||
WIS Service Media | |||
Record plug | |||
| Check | ||
6 | Check condition of seal at metering valve (2). | If metering valve (2) will not be replaced. | |
| Clean | ||
7 | Clean seat of metering valve (2) in exhaust pipe (3) of SCR catalytic converter. | ||
8 | Check sealing surface of metering valve (2) at exhaust pipe (3) for wear and damage. | If wear and/or damage is present: | |
| |||
Replace SCR catalytic converter. | |||
| |||
9 | Seal opening at seat of metering valve (2) in exhaust pipe (3) of SCR catalytic converter. | Record plug | |
10 | Install in the reverse order. | ||
11 | Read out the fault memory using the diagnostic unit. | ||
| Connect/disconnect diagnostic unit | ||
Do not remove diagnostic device yet. | |||
If stored faults are present, | |||
| |||
Erase the fault memory. | |||
12 | Perform parameterization of metering valve (2) using diagnostic device in fuel injection system control unit. | If metering valve (2) was replaced. | |
13 | Disconnect diagnostic unit. | ||
| Connect/disconnect diagnostic unit | ||
| Check | ||
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. | |
14 | Check for leaktightness when engine is running. | Visual inspection only. |
129 589 00 91 00
Record plug
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