AP20.00-B-2080E | Replace coolant | 12.02.16 |
Cumbustion engine 374 with Vehicle 688.101, 688.102, 688.103, 688.174, 688.123, 688.177, 688.118, 688.187, 688.156, 688.157, 688.133, 688.143, 688.176, 688.111, 384.085, 688.121, 688.159, 688.158
B20.00-0047-01
1 Cooling system reservoir cap
Arrow Maximum level marking
B20.00-0016-01
B18.20-0006-01
B20.00-0050-01
4 Radiator plug
Example
Arrow Drain plug on oil radiator
1 Drain plug on engine block
Example
1 | Open the access cover to the cooling reservoir | On LO vehicles, access to carry out maintenance and repair jobs varies with body type/make. | |
Refer to body maker instructions. | |||
Before changing coolant, check tightness and condition of the cooling and heating system. | |||
Danger! | Risk of burns due to coolant high temperature | Do not remove the cooling system's reservoir cap (1) when cooling system temperature is above 90°C. Should it become absolutely necessary to remove the cooling system reservoir cap with the engine hot (above 50 °C) proceed carefully to avoid accidents. Cover the cap with a thick rag and carefully turn the cap to the 1ststage and let the steam out, before removing it. Wear protection clothes. | |
2 | Remove the cooling system reservoir cap (1) | Should the vehicle be fitted with space heating, operate the control to the open position. | |
3 | Drain the coolant | Coolant and eventual corrosion residue must be completely drained. | |
Should it be necessary degrease and descale | |||
| Indications on coolant | ||
4 | Fill the cooling system | ||
| |||
Use of the hydrometer | |||
Danger! | Risk of personal and material damage when starting the engine with the gearbox shifted in gear. Risk of personal injuries when carrying out jobs with engine hot and running | Make sure the gearbox is in neutral. Wear suitable clothing and pay attention to hot and moving engine parts. | |
5 | Without installing the cap (1), run the engine for 1 to 2 minutes at variable speed | ||
6 | Stop the engine and replenish the cooling system | ||
7 | Install the cooling system reservoir cap (1) | Write down on the Maintenance Manual the change of the coolant. | |
8 | Close the access cover to the cooling reservoir |
Filling quantities for engine cooling
Número | Denominação | Engine 374.9 except 374.985 | |||
BF20.00-B-1001-01A | Cooling system - Approximate level | Do not mix products among the classes | Liters | 14 | |
Anti-corrosive/antifreeze CLASS MB 325.0, MB 325.3 | % | 50 | |||
Anti-corrosion product CLASS MB 312.0 | % | 10 | |||
Product already diluted | Anti-corrosion/antifreeze product CLASS MB 326.3 | Liters | 14 | ||
Pressure in the system | bar | 0,60...0,80 | |||
Vacuum in the system | bar | 0,10 | |||