Remove/Install Coolant Feed Line For Turbocharger - AR20.20-P-1000MSA
Engine 256.9 in model 213, 238, 257, 290
MODIFICATION NOTES
| 13.07.2020 | Insertion of an operation step variant for the removal/installation of the catalytic converter/exhaust gas aftertreatment unit | Operation step 2.1/2.2 | |
| 31.07.2020 | Special tool 000 589 93 63 00 assembly tool added | Operation steps 5 and 7 |
| 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 | |
| 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 | |
| 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. | AS00.00-Z-0002-01A | |
| Topical note | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Topical note | Notes on threaded connections fastened using a tightening angle-based tightening process | AH00.00-P-0020-01A | |
| Remove/install | |||
| 1 | Drain off coolant. | AR20.00-P-1142MSA | |
| 2.1 | Remove the catalytic converter. | Engine 256.9 in model 213, 238 up to model year 2020 Engine 256.9 in model 257, 290 |
|
| AR49.20-P-0100MSA | |||
| 2.2 | Remove exhaust gas aftertreatment unit. | Engine 256.9 in model 213, 238 as of model year 2020 | AR49.20-P-1500MSA |
| 3 | Remove inerting system line from exhaust gas turbocharger (3) and place to one side. | Engine 256.9 in model 213, 238 with code 2U8 (Alternative refrigerant) | AR86.10-P-0119LWO |
| Engine 256.9 in model 257, 290 with code 2U8 (Alternative refrigerant) | AR86.10-P-0119FR | ||
| 4 | Remove screws (1, 2). | *BA09.40-P-1012-02MR | |
| 5 | Remove coolant feed pipe (6) and coolant return line (5) from exhaust gas turbocharger (3) and seal openings with suitable stop plugs. | ||
| Fig 2 | |||
| Fig 3 | |||
| 6 | Remove screw (4). | *BA09.40-P-1012-02MR | |
| 7 | Remove coolant feed line (6) and seal openings with suitable stop plugs. | ||
| Fig 2 | |||
| Fig 3 | |||
| 8 | Install in the reverse order. | ||
| Check | |||
| 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 | Perform engine test run. While doing so, check engine for proper operation and leak tightness |
TURBOCHARGER
| Number | Designation | Engine 256.9 | ||
|---|---|---|---|---|
| BA09.40-P-1012-02MRT | Screw, water feed line/return line to exhaust gas turbocharger/crankcase/cylinder head | Stage 1 | Nm | 8 |
| Stage 2 | ∠° 0 | 60 | ||