Shown on ENGINE 646 |
1 | Cap |
2 | Drain plug for radiator |
N20.30-2059-01
N20.20-2051-01
Warning | Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. 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. | |
Topical note | Notes on coolant | ||
| Remove | ||
1 | Check coolant expansion reservoir for leaktightness and condition | ||
2 | Check all coolant lines and hoses for leaks and condition | ||
3 | Unscrew cap (1) | ||
4 | Adjust heater control to maximum heat output | See owner's manual. | |
5 | Lift/jack up vehicle | ||
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6 | Drain coolant at the radiator drain plug (2) | ||
7 | Check cooling system for contamination | The old coolant and the corrosion residues must be completely flushed out. In the event of serious contamination, clean the cooling system subject to a separate order. | |
| Install | ||
8 | Close radiator drain plug (2), evacuate cooling system with vacuum and fill | ||
| Service Information: Coolant | Model 900, 906 | |
ENGINE 271, 272, coolantCoolant | |||
ENGINE 642, 646, 651, coolantCoolant | |||
Warning | Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it 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. | |
9 | Start engine and bleed cooling and heating system | Warm up engine at varying speeds. Replace coolant continuously up to the "Max." mark. | |
10 | Turn off engine | ||
11 | Screw on cap (1) | ||
12 | Confirm replacement of coolant in the maintenance booklet or in the DSB |