Remove/install coolant pump - AR20.10-P-1271GZS (ML63 AMG)
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ENGINE 156 in MODEL 164, 251
MODIFICATION NOTES
| 6.2.07 | Bolt, coolant pump to timing case cover and crankcase | Engine 156 | *BA20.10-P-1001-01V |
| Remove/install | |||
|---|---|---|---|
| Risk of injury caused by fingers being pinched or crushed when removing, installing or aligning hoods, doors, trunk lids, tailgates or sliding roof. | Keep body parts and limbs well clear of moving parts. | AS00.00-Z-0011-01A | |
| Risk of death caused by vehicle slipping or toppling off the lifting platform. | Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. | AS00.00-Z-0010-01A | |
| Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by 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 | Switch ignition off, remove ignition key (transmitter key). | ||
| 2 | Open engine hood | Model 164 | AR88.40-P-1000GZ |
| Model 251 | AR88.40-P-1000RT | ||
| 3 | Remove front engine cover | ||
| 4 | Raise vehicle with lifting platform | Model 164 | AR00.60-P-1000GZ |
| Model 251 | AR00.60-P-1000RT | ||
| 5 | Remove bottom engine compartment paneling | AR61.20-P-1105GZ | |
| Model 164 | AR61.20-P-1105GZ | ||
| Model 251 | AR61.20-P-1105RT | ||
| 6 | Drain coolant from radiator | AR20.00-P-1142GZS | |
| Notes on coolant | All engines | AH20.00-N-2080-01A | |
| *BF20.00-P-1001-02U | |||
| Fig 2 | |||
| Fig 4 | |||
| 7 | Remove electric fan | AR20.40-P-5000GZS | |
| 8 | Attach guard plate for radiator / condenser | ||
| Radiator guard plate/ condenser | WF58.50-P-0110-01A | ||
| 9 | Loosen bolts of belt pulley (2) | *BA13.25-P-1002-01U | |
| 10 | Remove poly-V belt (3) | AR13.22-P-1202GZS | |
| 11 | Detach the belt pulley (2) from coolant pump (1) | ||
| 12 | Remove guide pulley (4, 5) from coolant pump (1) | *BA13.25-P-1003-01U | |
| *BA13.25-P-1004-01U | |||
| 13 | Remove guide pulley (6) from timing case cover | *BA13.25-P-1005-01U | |
| 14 | Dismount coolant hose (9) on coolant pump (1) | ||
| Fig 5 | |||
| 15 | Remove bolts (7) | *BA20.10-P-1001-01V | |
| 16 | Remove bolts (8) | *BA20.10-P-1001-01V | |
| 17 | Detach and remove coolant pump (1) from the timing case cover | ||
| 18 | Clean sealing surface on timing case cover | ||
| 19 | Clean sealing surface on coolant pump (1) | ||
| 20 | Install in the reverse order | ||
| 21 | Inspect cooling system for leaks | AR20.00-P-1010GZS | |
| Fig 3 | |||
| Fig 2 | |||
| Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running | Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. |
AS00.00-Z-0005-01A | |
| 22 | Conduct engine test run and check engine for leaks |
COOLANT PUMP, COOLANT THERMOSTAT
| Number | Designation | Engine 156 | ||
|---|---|---|---|---|
| BA20.10-P-1001-01V | Bolt, coolant pump to timing case cover and crankcase | M6x30 | Nm | 9 |
| M6x80 | Nm | 9 | ||
| M8x80 | Nm | 20 | ||
| M8x100 | Nm | 20 | ||
BELT TENSIONING DEVICE
| Number | Designation | Engine 156 | ||
|---|---|---|---|---|
| BA13.25-P-1002-01U | Bolt, pulley to coolant pump | M6 | Nm | 8.5 |
| BA13.25-P-1003-01U | Guide pulley on coolant pump housing (between power steering pump and guide pulley with grooved channel profile) | Nm | 30 | |
| BA13.25-P-1004-01U | Guide pulley to coolant pump housing (between alternator and smooth guide pulley) | Nm | 20 | |
| BA13.25-P-1005-01U | Guide pulley (between poly-V belt tensioning device and coolant pump) | Nm | 20 | |
COOLING SYSTEM
| Number | Designation | Engine 156 in model 164, 251 | ||
|---|---|---|---|---|
| BF20.00-P-1001-02U | Cooling system | Total filling capacity | ≈Liters | 7.5 |
| Antifreeze/water | Up to -37°C | 50/50 | ||
| Up to -45°C | 55/45 | |||
| Specifications for Operating Fluids | Sheet | BB00.40-P-0310-01A | ||
| Sheet | BB00.40-P-0325-00A | |||