P20.10-2055-06
Shown on engine 271.9
1 Housing
2 Coolant thermostat
3 Bolts
P20.10-2279-06
Shown on engine 271.8
1 Housing
2 Coolant thermostat
3 Bolts
P20.00-2349-11
Shown on engine 271.8
Y16/2 Heating system shutoff valve
Modification notes
17.3.10 | Use bolt for coolant temperature regulating housing with thread lock, added | Operation step 6 |
| Remove/install | ||
Danger! | Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by 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. Wear protective gloves, protective clothing and safety glasses. | |
1 | Drain coolant at radiator | ||
| Notes on coolant | ||
2.1 | Remove engine vacuum duct | Engine 271.9 | |
2.2 | Remove air guide between air filter housing and turbocharger | Engine 271.8 | |
3 | Remove heating system shutoff valve (Y16/2) | Engine 271.8 | |
| |||
4 | Remove expansion reservoir for P/S | Engine 271.8: Place expansion reservoir with attached lines to one side. | |
5 | Detach coolant hose (1) on the housing of the coolant thermostat (2) | Installation: Check sealing ring and coolant hose for damage and replace if necessary. | |
6 | Remove screws (3) and remove housing (1) of coolant thermostat (2) | Installation: Replace O-ring; insert bolts (3) with thread lock. | |
| |||
Loctite 243 | |||
7 | Remove coolant thermostat (2) from housing (1) | Engine 271.8: The coolant thermostat (2) and housing (1) create an assembly. | |
8 | Install in the reverse order | ||
9 | Inspecting cooling system for leaks | ||
10 | Check coolant level | ||
Danger! | Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running | Secure vehicle to prevent it from moving by itself. | |
11 | Perform an engine test run and perform function testing of the coolant thermostat (2) and check engine for leaks |
Headless screws: Screws and nuts, coarse-pitch thread
Number | Designation | All models | |||
BA00.10-P-1002-01A | M6 | 8.8 | Galvanized | Nm | 9 |
Phosphated | Nm | 9 | |||
10.9 | Galvanized | Nm | 13 | ||
Phosphated | Nm | 12 | |||
12.9 | Galvanized | Nm | 16 | ||
Phosphated | Nm | 14 | |||
Coolant pump, coolant thermostat
Number | Designation | Engine | ||
BA20.10-P-1003-01I | Bolt, coolant thermostat housing at clyinder head | Nm | 9 | |
Repair materials
Number | Designation | Order number |
BR00.45-Z-1133-02A | Loctite 243 | A 613 989 09 71 |
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