Inspect cooling system for leaks - AR20.00-P-1010MEW
ENGINE 780.009 in MODEL 451.391/491 Coolant circuit high-voltage battery
| 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 | ||
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| Check | |||
| 1 | Remove maintenance flap | ||
| 2 | Turn cap (1) on expansion reservoir (2) half a revolution counterclockwise, relieve overpressure and then unscrew cap (1) | ||
| 3 | Check coolant level in expansion reservoir (2), correct if necessary | ||
| Coolant specifications | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
| Anticorrosion/antifreeze agents (Sheet 325.0) | Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
| 4 | Attach pressure pump on expansion reservoir (2) | Figure | |
| 5 | Apply a pressure of a max. 1.6 bar to the cooling system | ||
| 6 | Observe pressure gauge on pressure pump for pressure drop in cooling system | ||
| 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 | |
| 7 | Raise vehicle using the vehicle lift and remove underfloor paneling | ||
| 8 | Check all components of cooling system for leaktightness and establish coolant loss | ||
| 9 | Install underfloor paneling | ||
| 10 | Lower vehicle with vehicle lift | ||
| 11 | Remove pressure in cooling system at pressure pump and disconnect pressure pump on expansion reservoir (2) | Figure | |
| 12 | Seal expansion reservoir (2) with cap (1) | ||
| 13 | Install maintenance flap |