Remove/Install Electric Coolant Pump - AR20.10-P-1281MSA
Engine 256.9 in model 213, 238, 257, 290
MODIFICATION NOTES
| 22.07.2021 | Remove the catalytic converter. | Operation step 1.1. | |
| 22.07.2021 | Remove exhaust gas aftertreatment unit. | Operation step 1.2. |
| 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 | |
| Remove/install | |||
| 1.1 | Remove the catalytic converter. | Engine 256.9 in model 213, 238 up to model year 2020 Engine 256.9 in model 257, 290 |
|
| AR49.20-P-0100MSA | |||
| 1.2 | Remove exhaust gas aftertreatment unit. | Engine 256.9 in model 213, 238 as of model year 2020 | |
| AR49.20-P-1500MSA | |||
| 2 | Drain off coolant. | AR20.00-P-1142MSA | |
| 3 | Drain coolant of low-temperature circuit. | AR09.41-P-6834MSA | |
| 4 | Remove heat shield (10). | *BA00.10-P-1002-04A | |
| 5 | Remove coolant hose (1) from coolant line to starter-alternator control unit (N129) and seal openings using suitable protective covers. | AR20.20-P-7441-01RQ | |
| Fig 3 | |||
| 6 | Remove coolant hoses (2, 3) from electric coolant pump (M75/11) and seal openings using suitable protective covers. | Fig 3 | |
| Fig 4 | |||
| 7 | Remove coolant hoses (4, 5) from electric coolant pump (M75/11) and seal openings using suitable protective covers. | AR20.20-P-7441-01RQ | |
| Fig 3 | |||
| 8 | Release and disconnect electrical connectors (6, 7). | ||
| 9 | Unclip electric lines (arrows A) and place to one side. | Fig 2 | |
| 10 | Remove screws (8) and remove electric coolant pump (M75/11). | *BA20.10-P-1002-01MR | |
| 11 | 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 THERMOSTAT, COOLANT PUMP
| Number | Designation | Engine 256 | |
|---|---|---|---|
| BA20.10-P-1002-01MRT | Bolt, coolant pump to crankcase | Nm | 20 |