Drain/pour in coolant - AR20.00-P-1142MR
ENGINE 274 in MODEL 172, 204, 207, 212, 218
MODIFICATION NOTES
| 7.10.15 | Coolant specification altered | Operation step 6.2 |
| 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 | Unscrew cap on coolant expansion reservoir | ||
| 2 | Remove lower engine compartment paneling | Engine 274 in model 172 | AR61.20-P-1105W |
| Engine 274 in model 204.9 | AR61.20-P-1105CY | ||
| Engine 274 in model 204.0/2/3, 207, 212, 218 | AR61.20-P-1105EW | ||
| 3 | Push drain hose onto drain fitting (1) | Engine 274 in model 172 up to model year 2015 Engine 274 in model 204, 207, 212, 218 |
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| 4 | Unfasten drain screw (2) on radiator and drain off coolant | Only unscrew drain screw (2) on radiator until the coolant flows out. The drain screw (2) can be damaged otherwise. |
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| Pour in | |||
| 5 | Tighten down drain screw (2) on radiator and detach drain hose from drain fitting (1) | ||
| 6.1 | Pour in coolant and ventilate engine cooling system | Engine 274 in model 172 up to model year 2015 Engine 274 in model 204, 207, 212, 218 |
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| AR20.00-P-1142-04A | |||
| Anticorrosion/antifreeze agents (Sheet 325.0) | Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
Do not mix together coolants with different specifications. Engine damage can occur otherwise. |
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| *BF20.00-P-1001-04A | |||
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| 6.2 | Pour in coolant and ventilate engine cooling system | Engine 274 in model 172 as of model year 2016 |
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| AR20.00-P-1142-04A | |||
| Anticorrosion agent/antifreeze (specification 325.6) | Anticorrosion agent/antifreeze (Specification 325.6). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
Do not mix together coolants with different specifications. Engine damage can occur otherwise. |
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| *BF20.00-P-1001-04A | |||
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| Check | |||
| 7 | Check engine cooling system for leaktightness | AR20.00-P-1010MR | |
| 8 | Install lower engine compartment paneling | Engine 274 in model 172 | AR61.20-P-1105W |
| Engine 274 in model 204.0/2/3, 207, 212, 218 | AR61.20-P-1105EW | ||
| Engine 274 in model 204.9 | AR61.20-P-1105CY | ||
| 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 an engine test run and check engine cooling system for proper operation |
COOLANT MIXING RATIO
| Number | Designation | ENGINE ALL | ||
|---|---|---|---|---|
| BF20.00-P-1001-04A | Coolant mixing ratio | Antifreeze/water | to -37°C | 50/50 |
| Antifreeze/water | to -45°C | 55/45 | ||
| Specification | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |||