Remove/Install Engine Coolant Fan Unit - AR20.40-P-5050MNP
Engine 177 In Model 167
Fig 1: Engine Coolant Fan Unit Components Location - Engine 177 In Model 167 (Shown Except Code M036)
Shown on engine 177 except code M036 (Maybach version)
Shown on engine 177 (with code M036)
| 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 due to fan starting unexpectedly | Do not reach into the rotation or hazard area of the fan. Wear closed and close-fitting work clothes. | AS20.40-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 | |
| Notes on coolant level | AH20.00-P-1142-01CW | ||
| Remove/install | |||
| 1 | Drain off coolant. | AR20.00-P-1142MNP | |
| 2 | Drain coolant of low-temperature circuit. | AR09.41-P-6834MNP | |
| 3 | Remove bleed line (4). | AR20.20-P-7441-01RQ | |
| 4 | Remove air ducting (2). | ||
| 5 | Remove engine air intake ducts (1). | Fig 2 | |
| 6 | Remove push-in fasteners (3). | ||
| 7 | Remove coolant line (8). | AR20.20-P-7441-01RQ | |
| 8 | Release and disconnect electrical connector (6), remove electrical wiring harness from cooler and place to one side. | ||
| 9 | Remove coolant line (9) and place to one side. | AR20.20-P-7441-01RQ | |
| 10.1 | Remove coolant line (5). | Engine 177 in model 167 except code M036 (Maybach version) |
AR20.20-P-7441-01RQ |
| 10.2 | Remove coolant line (10). | Engine 177 in model 167 with code M036 (Maybach version) |
AR20.20-P-7441-01RQ |
| 11 | Remove coolant line (8) and place to one side. | AR20.20-P-7441-01RQ | |
| 12 | Carefully press cooling module in direction of engine, unclip fan unit (7) from radiator mounting brackets and remove upwards. | ||
| 13 | 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 | |
| Risk of burn injuries , suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust. | Wear protective clothing and safety glasses. Use the extraction system. Move people out of the danger zone. | AS49.00-Z-0001-01A | |
| 14 | Perform engine test run. While doing so, check engine for proper operation and leak tightness. |