Check low-temperature circuit cooling system for leaks - AR09.41-P-1010MUB
MODEL 217 with ENGINE 279
MODEL 222 with ENGINE 277, 279
MODIFICATION NOTES
| 26.09.2014 | Mixing ratio for coolant | BF20.00-P-1001-04A |
| Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. | AS00.00-Z-0010-01A | |
| 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 | ||
| Remove | |||
| 1 | Remove lower front engine compartment paneling | AR61.20-P-1105LF | |
| 2 | Remove engine cover | ||
| 3 | Unscrew cap (1) on low-temperature circuit coolant expansion reservoir (2) | ||
| Check | |||
| 4 | Check coolant level and antifreeze content coolant in low-temperature circuit | *BF20.00-P-1001-04A | |
| 5 | Screw tester cap (3) onto low-temperature circuit coolant expansion reservoir (2) | Figure | |
| 6 | Connect pressure pump (4) at test cap (3) | Figure | |
| 7 | Apply pressure to the low-temperature circuit | Damage will occur otherwise to the engine cooling system. Test pressure for pressure-testing the engine cooling system |
*BE20.30-P-1005-01A |
| 8 | Perform a visual inspection on the components carrying coolant | If there is no external coolant loss recognizable. ↓ Check coolant carrying components for inner leaktightness. |
|
| Install | |||
| 9 | Actuate pressure relief button on the pressure pump (4) in order for the overpressure to be relieved over the valve on the pressure pump (4) | Figure | |
| 10 | Remove pressure pump (4) | Figure | |
| 11 | Unscrew tester cap (3) from low-temperature circuit coolant expansion reservoir (2) | Figure | |
| 12 | Check coolant level and antifreeze content coolant | *BF20.00-P-1001-04A | |
| 13 | Screw cap (1) onto low-temperature circuit coolant expansion reservoir (2) | ||
| 14 | Reinstall engine cover | ||
| 15 | Install lower engine compartment paneling | AR61.20-P-1105LF |
RADIATOR OR EXPANSION RESERVOIR CAP
| Number | Designation | 1-stage cover latch | 2-stage cover latch | ||
|---|---|---|---|---|---|
| BE20.30-P-1005-01A | Test pressure for pressure-testing the engine cooling system | Overpressure | bar | 1, 4 | 1, 4 |
COOLANT MIXING RATIO
| Number | Designation | Engine all | |||
|---|---|---|---|---|---|
| BF20.00-P-1001-04A | Coolant mixing ratio | Antifreeze/water | Up to -37°C | % | 50/50 |
| As of -38 °C | % | 55/45 | |||
| Specification | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||||
| Specification | Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||||
| Specification | Premixed coolant (Specification 326.0). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||||