Remove/Install Coolant Thermostat - AR20.10-P-2461MNL
Engine 176 In Model 217, 222
MODIFICATION NOTES
| 04.05.2021 | Remove left charge air cooler. | Operation step 3. |
| 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 | 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 | |
| Notice | Notes on coolant | AH20.00-P-2080-01KOA | |
| Notes on coolant level | AH20.00-P-1142-01CW | ||
| Remove/install | |||
| 1 | Drain off coolant. | AR20.00-P-1142MNL | |
| 2 | Remove right charge air cooler. | Engine 176 in model 217, 222with small lower coolant expansion reservoir for low-temperature circuit | AR09.41-P-6828MNL |
| Engine 176 in model 217, 222with large lower coolant expansion reservoir for low-temperature circuit | AR09.41-P-6828MNP | ||
| 3 | Remove left charge air cooler. | Engine 176 in model 217, 222with large lower coolant expansion reservoir for low-temperature circuit | |
| AR09.41-P-6827MNP | |||
| 4 | Release electrical connector of coolant thermostat heating element (R48) and disconnect. | ||
| 5 | Remove screw of coolant line bracket at coolant thermostat (7). | *BA00.10-P-1002-04A | |
| 6 | Unscrew screws (3) and remove coolant inlet fitting (1). | ||
| *BA20.10-P-1005-01ZA | |||
| 7 | Remove screws (4) and remove coolant thermostat (7). | ||
| *BA20.10-P-1002-01ZA | |||
| 8 | Install in the reverse order. |
METRIC SCREWS/BOLTS AND NUTS AS PER MBN 10 105, 10 143
| Number | Designation | 8.8 | 10.9 | |
|---|---|---|---|---|
| BA00.10-P-1002-04A | M6X1 | Nm | 9 | 13 |
COOLANT PUMP, COOLANT THERMOSTAT
| Number | Designation | Engine 176 | |
|---|---|---|---|
| BA20.10-P-1002-01ZA | Bolt, thermostat housing to crankcase | Nm | 8 |
COOLANT PUMP, COOLANT THERMOSTAT
| Number | Designation | Engine 176 | |
|---|---|---|---|
| BA20.10-P-1005-01ZA | Screw, coolant outlet fitting/coolant connection to thermostat housing | Nm | 8 |