Drain/pour in coolant - AR20.00-P-1142EWS
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ENGINE 272, 273 in MODEL 212
MODIFICATION NOTES
| 12.2.14 | Work procedure altered and special tools for electrical vacuum pump and NTKL adaptation, added. | Operation steps 14 to 26 | AR20.00-P-1142-04A |
| 26.9.14 | coolant mixing ratio | BF20.00-P-1001-04A |
| Risk of injury to skin and eyes suffering scalding from contact with hot coolant spray. 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 | |
| Notes on coolant | AH20.00-N-2080-01A | ||
| Drain off | |||
| 1 | Detach ground line from battery | When draining coolant at the right drain screw (5) on the crankcase. | |
| AR54.10-P-0003EW | |||
| 2 | Unscrew cap of the coolant expansion reservoir | ||
| 3 | Remove front section of the lower engine compartment paneling | AR61.20-P-1105EW | |
| Drain coolant at radiator | |||
| 4 | Slide drain hose onto left fitting (3) at radiator | ||
| 5 | Slacken drain screw on radiator (4) and drain coolant. | Remove radiator drain screw (4) until the coolant flows out. Permanent damage to the radiator drain screw (4) will occur otherwise. |
|
| 6 | Tighten down radiator drain screw (4) and pull out drain hose (3) | ||
| Drain coolant on crankcase | |||
| 7 | Loosen left or right drain screw (5) on crankcase until it can be turned manually | ||
| 8 | Push drain hose (3) onto left or right crankcase drain screw (5) | ||
| 9 | Manually turn left or right crankcase drain screw (5) by hand and drain off coolant | ||
| 10 | Detach drain hose (3) and tighten left or right crankcase drain screw (5) | *BA20.00-P-1001-02E | |
| Pour in | |||
| 11 | Pour in coolant and ventilate engine cooling system | ||
| Notes on coolant level | AH20.00-P-1142-01CW | ||
| Anticorrosion/antifreeze agents (Specification 325.0) | Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
| Coolant specifications | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
| AR20.00-P-1142-04A | |||
| *BF20.00-P-1001-04A | |||
| Figure | |||
| Figure | |||
| Figure | |||
| Figure | |||
| Check | |||
| 12 | Check engine cooling system for leaktightness | AR20.00-P-1010EW | |
| 13 | Attach ground line to battery | After draining coolant at right crankcase drain screw (5) | |
| AR54.10-P-0003EW | |||
| 14 | Install front section of the lower engine compartment paneling | AR61.20-P-1105EW | |
| 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 | |
| 15 | Perform an engine test run and check engine cooling system for proper operation |
ENGINE COOLING, GENERAL
| Number | Designation | ENGINE 272 | ENGINE 273 | |
|---|---|---|---|---|
| BA20.00-P-1001-02E | Coolant drain plug to cylinder crankcase | Nm | 12 | 12 |
COOLANT MIXING RATIO
| Number | Designation | ENGINE ALL | ||
|---|---|---|---|---|
| BF20.00-P-1001-04A | Coolant mixing ratio | Antifreeze/water | up to -37°C |
50/50 |
| Antifreeze/water | up to -45°C |
55/45 | ||
| Specification | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |||