Drain/fill in coolant - AR20.00-P-1142MCU
ENGINES 132.910 in MODEL 451.3/4
Fig 1: Identifying Cap, Hose Clamp, Expansion Reservoir, Radiator, Coolant Drain Plug And Coolant Hose
MODIFICATION NOTES
| 3.8.11 | Repeat ventilation process | Operation step 16 |
| Drain | |||
|---|---|---|---|
| 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 overpressure. 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 | ||
| 1 | Remove maintenance flap | ||
| 2 | Turn cooling system cap (1) on expansion reservoir (2) a half turn counterclockwise, relieve the overpressure and then unscrew the cooling system cap (1) | ||
| Risk of death caused by vehicle slipping or tilting off of the vehicle from the vehicle lift. | Align vehicle between vehicle lift columns and position four support plates at vehicle lift support points specified by vehicle manufacturer. | AS00.00-Z-0010-01A | |
| 3 | Raise vehicle and remove underfloor paneling | Cordless drill/driver | |
| 4 | Loosen hose clamp (4), detach coolant hose (3) on cooler (5) and drain off coolant | ||
| 5 | Remove coolant drain plug (8) and drain off coolant | ||
| Filling | |||
| 6 | Attach coolant hose (3) on cooler (5) and fasten with hose clamp (4) | ||
| 7 | Tighten down coolant drain plug (8) | ||
| 8 | Lower vehicle | ||
| 9 | Remove interior flap above engine | AR88.40-P-1100-03MCC | |
| 10 | Fill cooling system via the expansion reservoir (2) | ||
| Coolant specifications | Sheet 310.1 | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |
| Anticorrosion/antifreeze agents (Sheet 325.0) | Sheet 325.0 | Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |
| 11 | Loosen clamp (7) and detach coolant hose (6) from connection fitting on cylinder head | ||
| 12 | Push coolant hose (6) onto connection fitting on cylinder head and fasten with the clamp (7) | ||
| 13 | Correct coolant level in expansion reservoir (2) | ||
| Coolant specifications | Sheet 310.1 | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |
| Anticorrosion/antifreeze agents (Sheet 325.0) | Sheet 325.0 | Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |
| 14 | Seal expansion reservoir (2) with cap (1) | ||
| Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns from working on the vehicle as it is being started or when the engine 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 | |
| 15 | Run engine until it is warmed up | ||
| 16 | Repeat ventilation process until no further air escapes out of the coolant hose (6) and the connection fitting on cylinder head | ||
| 17 | Checking cooling system for leaktightness | AR20.00-P-1010MCU | |
| 18 | Raise vehicle with vehicle lift | ||
| 19 | Install underfloor paneling | Cordless drill/driver | |
| 20 | Lower vehicle with vehicle lift | ||
| 21 | Install interior flap above engine | AR88.40-P-1100-03MCC | |
| 22 | Install maintenance flap |