Drain/pour in coolant - AR20.00-P-1142A
ENGINE 276.8 in MODEL 207
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 | Mixture ratio coolant | *BF20.00-P-1001-04A |
| 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 caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof. | No parts of the body or limbs should be within the operating area when the components are moving. | AS00.00-Z-0011-01A | |
| Notes on coolant | AH20.00-N-2080-01A | ||
| Drain off | |||
| 1 | Unscrew cap (2) on coolant expansion reservoir (4) | ||
| 2 | Remove lower engine compartment paneling | AR61.20-P-1105EW | |
| Drain coolant at radiator | |||
| 3 | Push drain hose (3) onto left fitting (3a) on radiator (6) | ||
| 4 | Unfasten drain screw (7) at radiator (6) and drain coolant | Remove drain screw (7) until coolant flows out. The drain screw (7) can be permanently damaged otherwise. |
|
| Drain coolant from coolant pump (1) | |||
| 5 | Detach charge air cooler at throttle valve actuator and at engine charge air ducts and place with attached lines to one side | AR09.41-P-6819ELS | |
| 6 | Unfasten drain screw (5) at coolant pump (1) and push drain hose (3) on drain screw (5) | ||
| 7 | Further loosen drain screw (5) and drain coolant | ||
| Pour in | |||
| 8 | Tighten drain screw (7) on cooler (6) and detach drain hose (3) from fitting (3a) | ||
| 9 | Tighten drain screw (5) at coolant pump (1) and detach drain hose (3) | *BA20.10-P-1008-01AA | |
| 10 | Mount charge air cooler on throttle valve actuator and on engine charge air duct | AR09.41-P-6819ELS | |
| 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 | |||
| Fig 5 | |||
| Fig 4 | |||
| Fig 6 | |||
| Figure | |||
| Check | |||
| 12 | Check engine cooling system for leaktightness | AR20.00-P-1010ELA | |
| 13 | Install 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 | |
| 14 | Perform an engine test run and check engine cooling system for proper operation |
COOLANT PUMP, COOLANT THERMOSTAT
| Number | Designation | ENGINE 276 | ||
|---|---|---|---|---|
| BA20.10-P-1008-01AA | Drain screw on coolant pump | Stage 1 | Nm | 6 |
| Stage 2 | ∠° | 90 | ||
COOLANT MIXING RATIO
| Number | Designation | ENGINE ALL | ||
|---|---|---|---|---|
| BF20.00-P-1001-04A | Coolant mixing ratio | Antifreeze/water | until -37°C | 50/50 |
| Antifreeze/water | until -45°C | 55/45 | ||
| Specification | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |||