Remove/Install Coolant Thermostat - AR20.10-P-2461MFC
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Engine 260 in model 118, 177, 247
Shown on model 177 with engine except code M016 (Performance-enhanced engine) up to model year 2022
Fig 1: Coolant Thermostat Components Location - Model 118 With Engine 260 (Shown As Of Model Year 2022)
Shown as of model year 2022
Shown up to model year 2022
| 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 overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. |
AS20.00-Z-0001-01A | |
| Risk of injury . Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | AS00.00-Z-0002-01A | |
| Risk of injury caused by scraping or cutting body parts on sharp vehicle parts | Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels. |
AS00.00-Z-0017-01A | |
| Notice | Notes on coolant | AH20.00-P-2080-01KOA | |
| Notice | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Notice | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Remove/install | |||
| 1 | Remove charge-air distributor. | AR09.41-P-8683MFC | |
| 2 | Release and disconnect electrical connector (2) and unclip electric line from coolant thermostat (1) (arrows). | ||
| 3 | Remove coolant hose (6) from coolant thermostat (1). | Fig 3 | |
| Fig 4 | |||
| 4 | Remove coolant hose (5) from coolant thermostat (1). | Fig 3 | |
| Fig 4 | |||
| 5 | Remove coolant hose (4) at oil filter housing. | Engine 260 in model 118, 177, 247 up to model year 2022 |
Fig 3 |
| Fig 4 | |||
| 6 | Unscrew screws (3) and remove coolant thermostat (1) with remaining coolant hoses (4, 7) | Coolant hose (4) not installed. |
*BA20.10-P-1006-01AC |
| Fig 3 | |||
| 7 | Remove coolant hose (7) from coolant thermostat (1) | Fig 3 | |
| Fig 4 | |||
| 8 | Remove coolant thermostat (1). | If the filter screen (10) is installed, ↓ remove filter screen (10) and subsequently do not use it any longer. |
|
| 9 | Remove coolant hose (4) from coolant thermostat (1). | Engine 260 in model 118, 177, 247 up to model year 2022 If coolant thermostat (1) is replaced. |
Fig 2 |
| 10 | Install in the reverse order. | ||
| Check | |||
| 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. | AS00.00-Z-0005-01A | |
| 11 | Carry out engine test run and check engine for proper operation and leak tightness. |
COOLANT PUMP, COOLANT THERMOSTAT
| Number | Designation | Engine 260 except code 9U8 (Control code - Major assembly technical further development) | Engine 260 with code 9U8 (Control code - Major assembly technical further development) | |
|---|---|---|---|---|
| BA20.10-P-1006-01AC | Bolt, coolant thermostat to crankcase/cylinder head | Nm | 8 | 8 |