2 | Heat protection insulation |
3 | Injection line |
4 | Electrical connector |
5 | Clamps |
6 | Coolant hoses |
7 | Clip |
8 | Catalytic converter |
Y129 | AdBlue® metering valve |
P14.40-2653-06
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. | |
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 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. | |
Topical note | Notes on coolant | ||
Topical note | Information on preventing damage to electronic components due to electrostatic discharge | ||
Topical note | Notes on avoiding damage through contamination and foreign objects | ||
Notes on use, material properties and handling of AdBlue® | |||
| Remove/install | ||
1 | Remove upper engine cover. | ||
Installation: Only install upper engine cover after the leak test. | |||
2 | Unclip and remove heat shield insulation (2). | ||
3 | Release, remove injection line (3) at AdBlue® metering valve (Y129) and collect escaping AdBlue®. | ||
4 | Clean connection of injection line (3) with lint-free rag. | ||
5 | Seal openings at injection line (3) and AdBlue® metering valve (Y129) with suitable stop plugs. | Record plug | |
6 | Release and disconnect electrical connector(4). | ||
7 | Disconnect coolant hoses (6). | Clamp | |
8 | Remove coolant hoses (6) from AdBlue® metering valve (Y129) and collect escaping coolant. | Installation: Replace clamps (5). | |
Hose clamp pliers | |||
9 | Seal openings at AdBlue® metering valve (Y129) with suitable stop plugs. | Record plug | |
10 | Open clamp (7) and remove AdBlue® metering valve (Y129). | Installation: Replace clamp (7) and seal. | |
Bolt, clamp for AdBlue® metering valve to catalytic converter | |||
11 | Clean seat of AdBlue® metering valve (Y129) at catalytic converter (8). | ||
12 | Seal opening at catalytic converter (8) with protective cover. | Set of protective caps | |
13 | Install in the reverse order. | ||
14 | Read out and delete fault memory. | ||
| |||
15 | Check coolant level and correct if necessary. | ||
Notes on coolant level | |||
Engine 656 in model 167.121/123Cooling system | |||
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. | |
16 | Carry out engine test run and check engine for proper leak tightness and leak tightness. | ||
17 | Install upper engine cover. |
Cooling system |
Number | Designation | Engine 656 in model 167.121 | Engine 656 in model 167.123 | |||
BF20.00-P-1001-06E | Cooling system | Workshop replacement amount | Main circuit | Litre | 14,7 | 17,2 |
Low-temperature circuit | Litre | - | - | |||
Antifreeze/water | to -37 °C | % | 50/50 | 50/50 | ||
as from -38 °C | % | 55/45 | 55/45 | |||
Specifications for Operating Fluids, sheet | ||||||
Specifications for Operating Fluids, sheet | ||||||
Specifications for Operating Fluids, sheet | ||||||
000 589 54 37 00
Clamp
001 589 00 91 00
Set of protective caps
003 589 03 37 00
Hose clamp pliers
129 589 00 91 00
Record plug
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