AP20.00-T-2080BA | Replace coolant | 7.5.03 |
ENGINE 441.980 in model NMB613.355
ENGINE 402.970, 446.938 in MODEL NMB613.455 /485
ENGINE 457.944 in MODEL NMB613.358 /388
T20.30-0002-01
1 Cap
Danger! | 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 bottles. Wear protective gloves, protective clothing and eye protection. | |
| Notes on coolant | All engines | |
1 | Check the condition of the cooling and heating system | Before replacing the coolant, inspect the condition of the cooling and heating system, and check it for leaks. | |
2 | Turn temperature selector for front and floor heater to maximum position | Switch on the ignition and wait until the control valves of the front, floor and roof heaters open. Switch off the ignition after about two minutes. | |
3 | Detach end cover (1) | ||
4 | Drain coolant, pour in | Only use coolant in the prescribed composition to avoid damaging the cooling and heating system. | |
The old coolant and the corrosion residues must be completely flushed out. If the cooling and heating system is very dirty, clean it against a separate repair order. | |||
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5 | Turn temperature selector for front and floor heater to center position | To prevent damage, connect the auxiliary heater only after the test run. | |
6 | Connect the circulation pump of the auxiliary heater | Switch ignition on. | |
7 | Replenish coolant | Up to edge of filler neck. | |
8 | Attach end cover (1) | ||
Danger! | Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns when working in engine during starting procedure | Secure vehicle to prevent it from moving. | |
9 | Crank the engine and run it for about one minute at varying rpm | ||
10 | Switch off engine and top up coolant | Switch on the ignition and let the circulation pump of the auxiliary heater run. | |
11 | Crank the engine and run it until the thermostat opens | ||
12 | Switch off engine and allow to cool down | ||
13 | Check coolant level, adjust to correct level if necessary. | For coolant temperature approx. 50 °C. |
Engine cooling system
Number | Designation | Engine 402.970, 441.980, 446.938, 457.944 | ||
BF20.00-N-1001-01D | Coolant capacity | without VOITH retarder | Liters | 75...100 |
with VOITH retarder | Liters | 95...120 | ||
Specifications for Operating Fluids | Sheet | |||
Sheet | ||||
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