Drain/fill in coolant - AR20.00-P-1142GZC (ML350, ML550, GL450, GL550)
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ENGINES 272, 273 in MODEL 164
| Drain | |||
|---|---|---|---|
| Risk of explosion caused by oxyhydrogen gas. Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries | No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. |
AS54.10-Z-0001-01A | |
| Risk of injury to skin and eyes caused by 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 | |
| 1 | Unscrew cap for coolant expansion reservoir (1) | Unscrew cap slowly and relieve excess pressure. | |
| 2 | Remove bottom engine compartment | AR61.20-P-1105GZ | |
| Drain coolant from radiator | |||
| 3 | Slide collector siphon hose onto fitting (6) at radiator | The fitting (6) is located at bottom left of the radiator. | |
| 4 | Loosen siphon hose (5) at radiator and drain coolant. | Observe regulations for disposal of coolant. | |
| Drain coolant at cylinder crankcase or coolant pump | |||
| 5 | Detach ground line from battery | When draining the coolant at the right drain plug (3) on the crankcase | AR54.10-P-0003GZ |
| Notes on battery | AH54.10-P-0001-01A | ||
| 6 | Loosen right or left drain plug (3 or 4) at crankcase until it can be turned manually | ||
| 7 | Push drain hose on right or left drain plug (3 or 4) onto crankcase | ||
| 8 | Unfasten drain screw (3 and 4 or 7) on cylinder crankcase or coolant pump further by hand and drain off coolant | Follow regulations for disposal of coolant. | |
| Filling | |||
| 9 | Tighten drain plug (5) at radiator and detach siphon hose from fitting (6) | ||
| 10 | Disconnect the siphon hose and tighten the drain plug (3, 4) at crankcase | *BA20.00-P-1001-02E | |
| 11 | Pour in coolant and bleed cooling system | Reuse clean coolant. | AR20.00-P-1142-04A |
| Fig 2 | |||
| Fig 3 | |||
| Notes on coolant level | AH20.00-P-1142-01GZB | ||
| Notes on coolant | AH20.00-N-2080-01A | ||
| Coolant specifications | Sheet 310.1 | BB00.40-P-0310-01A | |
| Anticorrosion/antifreeze agents (Sheet 325.0) | Sheet 325.0 | BB00.40-P-0325-00A | |
| *BF20.00-P-1001-04A | |||
| 12 | Inspect cooling system for leaks | AR20.00-P-1010GZC | |
| 13 | Attach ground lead to battery | After tightening crankcase drain plug on the right (3). | AR54.10-P-0003GZ |
| 14 | Connect STAR DIAGNOSIS and read fault memory | After disconnecting ground line on battery Faults which may have been caused by disconnecting wires or by a simulation must be erased in the fault memory after completing the work. |
AD00.00-P-2000-04A |
| 15 | Install lower engine compartment paneling | AR61.20-P-1105GZ | |
| 16 | Screw cap onto coolant expansion reservoir (1) | ||
ENGINE COOLING, GENERAL
| Number | Designation | Engine 272 | Engine 273 | |
|---|---|---|---|---|
| BA20.00-P-1001-02E | Coolant drain plug to crankcase | Nm | 12 | 12 |
MIXTURE RATIO FOR COOLANT
| Number | Designation | Engine all | ||
|---|---|---|---|---|
| BF20.00-P-1001-04A | Mixture ratio for coolant | Antifreeze/water | Up to -37°C | 50/50 |
| Up to -45°C | 55/45 | |||
| Specifications for service products | Sheet | BB00.40-P-0310-01A | ||
| Sheet | BB00.40-P-0325-00A | |||