Check Low-Temperature Circuit For Leaktightness - AR09.41-P-1011MRH
Engine 264 in model 213, 238, 257
| 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 and release the overpressure. 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 | ||
| Notes on coolant level | AH20.00-P-1142-01CW | ||
| Check | |||
| 1 | Remove cap (2) from expansion reservoir (1) | ||
| 2 | Check coolant level and antifreeze content coolant | *BF20.00-P-1001-04A | |
| 3 | Fit tester cap (3) on expansion reservoir (1) | Fig 1 | |
| 4 | Connect pressure pump (4) with tester cap (3) | Fig 2 | |
| 5 | Apply test pressure to engine cooling system low-temperature circuit for 2 min | Damage will occur otherwise to the engine cooling system low-temperature circuit. Test pressure for pressure-testing the engine cooling system |
*BE20.30-P-1005-01A |
| 6 | Inspect condition of and check for coolant loss from all coolant carrying component parts and connections of the engine cooling system low-temperature circuit and install new parts as required | In the event of pressure drop. | |
| 7 | Relieve test pressure over valve on pressure pump (4) | Fig 2 | |
| 8 | Remove pressure pump (4) from test connection (3) | ||
| 9 | Remove tester cap (3) from expansion reservoir (1) | Fig 1 | |
| 10 | Check coolant level and antifreeze content of coolant and correct if necessary | *BF20.00-P-1001-04A | |
| 11 | Fit cap (2) onto expansion reservoir (1) |
RADIATOR OR EXPANSION RESERVOIR CAP
| Number | Designation | 2-stage latch cover | ||
|---|---|---|---|---|
| BE20.30-P-1005-01A | Test pressure for pressure-testing the engine cooling system | Overpressure | bar | 1, 4 |
COOLANT MIXING RATIO
| Number | Designation | All engines, except engine 178 in model 190.381 | |||
|---|---|---|---|---|---|
| BF20.00-P-1001-04A | Coolant mixing ratio | Antifreeze/water | Up to -25°C | % | - |
| Up to -37°C | % | 50/50 | |||
| As of -38°C | % | 55/45 | |||
| Overview and specifications sheet | BB00.40-P-0310-01A | ||||
| References to sheet specification | BB00.40-P-0310ZZ | ||||