Drain/fill low-temperature circuit coolant - AR09.41-P-6834RKA
ENGINE 276.8 in MODEL 172
ENGINE 276.8 in MODEL 231
Shown on model 231 up to model year 2016
Fig 1: Cap, Drain Fittings, Low-Temperature Circuit Coolant Expansion Reservoir And Drain Screw - Shown On Model 231 Up To Model Year 2016
Shown on model 231 as of model year 2016
Fig 2: Charge Air Cooler Circulation Pump And Coolant Hose - Shown On Model 231 As Of Model Year 2016
| 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 | ||
| Drain off | |||
| 1 | Remove upper engine cover | ||
| 2 | Unscrew cap (1) | ||
| 3 | Remove front lower engine compartment paneling | Engine 276.8 in model 172 | AR61.20-P-1105W |
| Engine 276.8 in model 231 | AR61.20-P-1105RK | ||
| 4 | Push drain hose onto drain fitting (3) | Engine 276.8 in model 172 Engine 276.8 in model 231 up to model year 2016 |
|
| 5.1 | Open drain screw (4) and drain coolant into a suitable container | Engine 276.8 in model 172 Engine 276.8 in model 231 up to model year 2016 |
|
| 5.2 | Detach coolant hose (6) at charge air cooler circulation pump (5) and catch escaping coolant in a suitable container | Engine 276.8 in model 231 as of model year 2016 |
Fig 7 |
| Pour in | |||
| 6.1 | Close drain screw (4) and remove drain hose from drain fitting (3) | Engine 276.8 in model 172 Engine 276.8 in model 231 up to model year 2016 |
|
| 6.2 | Mount coolant hose (6) on charge air cooler circulation pump (5) | Engine 276.8 in model 231 as of model year 2016 |
Fig 7 |
| 7 | Pour in coolant and bleed cooling system | AR20.00-P-1142-04A | |
| *BF20.00-P-1001-02BA | |||
| Fig 3 | |||
| Fig 4 | |||
| Fig 5 | |||
| Figure | |||
| Check | |||
| 8 | Check low-temperature circuit for leaktightness | AR09.41-P-1010RKA | |
| 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 and check cooling system for proper operation |
COOLING SYSTEM
| Number | Designation | Engine 276.8 in model 172 | Engine 276 in model 231 | |||
|---|---|---|---|---|---|---|
| BF20.00-P-1001-02BA | Cooling system | Workshop replacement amount | Main circuit | l | ≈ 10, 4 | ≈ 10, 8 |
| Low-temperature circuit | l | ≈ 3, 4 | ≈ 1, 9 | |||
| Antifreeze/water | Down to -37°C | % | 50/50 | 50/50 | ||
| -38°C and below | % | 55/45 | 55/45 | |||
| Specifications for Fluids, sheet | Operating | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |||
| Specifications for Fluids, sheet | Operating | Anticorrosion agent/antifreeze (Specification 325.6). See https://bevo.mercedes-benz.com/index.php?language_id=1 | Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |||
| Specifications for Fluids, sheet | Operating | Premixed coolant (Specification 326.6). See https://bevo.mercedes-benz.com/index.php?language_id=1 | Premixed coolant (Specification 326.0). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |||