AP20.00-T-2080A | Replace coolant | 16.9.98 |
MODEL NMB671.000with ENGINE 489.960
MODEL NMB671.005 with ENGINES 447.949 /960
MODEL NMB671.010with ENGINE 447.949
MODEL NMB671.312with ENGINE 489.961
MODEL NMB671.322 with ENGINES 447.947 /948
MODEL NMB671.327with ENGINE 447.948
T20.30-0002-01
1 Cap for cooling system
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 condition of cooling and heating system | Inspect cooling and heating system for leaks and proper condition before replacing the coolant. | |
2 | Turn temperature selector for front and floor heater to maximum position | Switch on ignition and wait until the regulating valves for the front, floor and roof heater open. Switch off the ignition after about 2 minutes. | |
3 | Take off cooling system (1) cap | ||
4 | Draining and puring in coolant | Only use coolant in the specified mixture, in order to avoid damage to the cooling and heating system. | |
The old coolant and the corrosion residues must be completely flushed out. Have the cooling and heating system cleaned against a separate order if it is very dirty. | |||
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5 | Turn temperature selector for front and floor heater to center position | Only switch on auxiliary heater after a test drive to avoid damaging it. | |
6 | Switch on auxiliary heater circulation pump | Switch ignition on. | |
7 | Open shutoff valve for filling and venting | ||
8 | Replenish coolant | until coolant emerges free of bubbles from the blow hole. | |
9 | Close shutoff valve for filling and venting and again top-up with coolant | up to edge of filler neck. | |
10 | Attach cooling system (1) cap | ||
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. | |
11 | Start engine and run for about 1 minute at varying speeds | ||
12 | Switch off engine and top up coolant | Switch on ignition and allow the auxiliary heater circulation pump to continue running. | |
13 | Crank the engine and drive the vehicle until the thermostat opens | ||
14 | Switch off engine and allow to cool down | ||
15 | Check coolant level, adjust to correct level if necessary. | For a coolant temperature of approx. 50°C. |
Engine cooling system
Number | Designation | Engine 447 | Engine | ||
BF20.00-N-1001-01D | Coolant capacity | without VOITH retarder | Liters | 76...92 | 70...80 |
with VOITH retarder | Liters | - | - | ||
Specifications for Operating Fluids | Sheet | ||||
Sheet | |||||
Commercially available tools
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