Remove/install circulation pump for low-temperature water circuit - AR09.41-P-6925LFA
ENGINE 276.8 in MODEL 217, 222
MODIFICATION NOTES
| 17.11.2015 | Drain off coolant from low-temperature water circuit. | Operation step 2 supplemented to include document reference |
| 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/install | |||
| 1 | Remove lower engine compartment paneling | AR61.20-P-1105LF | |
| 2 | Drain off coolant from low-temperature water circuit | AR09.41-P-6834LFB | |
| *BF20.00-P-1001-04A | |||
| 3 | Disconnect electrical connection (4) at low-temperature water circuit circulation pump (7) | ||
| 4 | Detach coolant hoses (1, 2) at circulation pump for low-temperature water circuit (7) | AR20.20-P-7441-01RQ | |
| 5 | Remove screw/bolt (3) and remove the bracket (5) | ||
| 6 | Remove low-temperature water circuit circulation pump (7) | ||
| 7 | Install in the reverse order | ||
| Check | |||
| 8 | Check low-temperature water circuit cooling system for leaktightness | AR20.00-P-1010LF | |
| 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; check cooling system for proper operation and leaktightness |
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 | ||||