Drain/pour in coolant - AR20.00-P-1142NKB
ENGINE 270 in MODEL 117, 156, 176, 242, 246
ENGINE 607 in MODEL 117, 156, 176, 246
ENGINE 651 in MODEL 117, 156, 176, 246
MODIFICATION NOTES
| 13.2.14 | Operation step added | Operation step 10 | |
| 13.2.14 | Operation step added | Operation step 13 | |
| 26.9.14 | Mixing ratio, coolant | BF20.00-P-1001-04A |
Shown on vehicle with engine 270
Shown on vehicle with engine 270
Shown on model 176 with engine 607
Fig 3: Coolant Expansion Reservoir, Cap, Coolant Thermostat & Engine Air Intake Duct - Shown On Model 176
| 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 | |||
| 1.1 | Remove lower engine compartment paneling | ENGINE 270 in MODEL 117, 176, 242, 246 ENGINE 270, 607, 651 in MODEL 156 | |
| AR61.20-P-1105NKB | |||
| 1.2 | Remove bottom section of soundproofing | ENGINE 607 in MODEL 117, 176, 246 ENGINE 651 in MODEL 117, 176, 246 |
|
| AR94.30-P-5300NKB | |||
| Lowering | |||
| 2 | Unscrew cap (1) on coolant expansion reservoir (2) | ||
| 3 | Push drain hose (6) onto RH drain fitting (3) on cooler (5) | ||
| 4 | Open drain screw (4) at radiator (5) and drain coolant | ||
| Filling | |||
| 5 | Remove cylinder head cover trim | ENGINE 607 in MODEL 117, 156, 176, 246 | AR01.20-P-5014-02OLB |
| 6 | Tighten drain screw (4) on cooler (5) and detach drain hose (6) from drain fitting (3a) | ||
| 7 | Remove hose for engine air intake duct (7) downstream of air filter housing | ENGINE 607 in MODEL 117, 156, 176, 246 | AR09.10-P-8130ORA |
| 8 | Pour in coolant | AR20.00-P-1142-04A | |
| Notes on coolant level | AH20.00-P-1142-01CW | ||
| *BF20.00-P-1001-04A | |||
| Fig 6 | |||
| Fig 5 | |||
| Figure | |||
| Figure | |||
| 9 | Detach cap (8V) from coolant thermostat (8), allow coolant to drain off and finally mount cap (8V) on coolant thermostat (8) | ENGINE 607 in MODEL 117, 156, 176, 246 |
|
| 10 | Install hose for engine air intake duct (7) downstream of air filter housing | ENGINE 607 in MODEL 117, 156, 176, 246 | AR09.10-P-8130ORA |
| Check | |||
| 11 | Check cooling system for leaktightness | AR20.00-P-1010NKB | |
| 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 | |
| 12 | Perform an engine test run and check cooling system for proper operation | ||
| Install | |||
| 13 | Install cylinder head cover trim | ENGINE 607 in MODEL 117, 156, 176, 246 | |
| ENGINE 607 in MODEL 117, 156, 176, 246 | AR01.20-P-5014-02OLB | ||
| 14.1 | Install bottom section of soundproofing | MODEL 117, 176, 246 with ENGINE 607, 651 | |
| AR94.30-P-5300NKB | |||
| 14.2 | Install lower engine compartment paneling | ENGINE 270 in MODEL 117, 176, 242, 246 ENGINE 270, 607, 651 in MODEL 156 |
|
| AR61.20-P-1105NKB |
COOLANT MIXING RATIO
| Number | Designation | ENGINE ALL | ||
|---|---|---|---|---|
| BF20.00-P-1001-04A | Coolant mixing ratio | Antifreeze/water | up to -37°C | 50/50 |
| Antifreeze/water | up to -45°C | 55/45 | ||
| Specifications | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |||
| Specifications | Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |||