T20.10-0026-11
1 Hose clamp
2 Coolant hose
3 Bolt
4 Coolant thermostat housing
A20.10-0001-01
5 Coolant thermostat
6 Sealing ring
| Remove/Install | ||
1 | Open engine compartment flap at rear | ||
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. | |
2 | Close shutoff valves of heating system and drain coolant | Location of shutoff valve, see operator's manual. | |
| Drain coolant, pour in | ||
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| Notes on coolant | All engines. | |
3 | Slacken hose clamps (1) and remove coolant hose (2) | Installation: Check hose clamps (1) and coolant hose (2) for damage, replace if necessary. | |
4 | Detach housing of coolant thermostat (4) | To do this, unscrew screws (3). | |
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5 | Remove coolant thermostat (5) with sealing rings (6) | Installation: Replace sealing rings and install slightly greased. The arrows on the coolant thermostats must be pointing up. | |
6 | Test coolant thermostat | ||
7 | Install in the reverse order |
Coolant pump, coolant thermostat
Number | Designation | Engine 457.9 | |
BA20.10-N-1001-01K | Bolt of coolant outlet connection with | NM | 25 |
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 | ||||
Repair materials
Number | Designation | Order number |
BR00.45-Z-1014-06A | ATE grease | - |