Remove/Install Coolant Lines For Electric Motor Control Unit Of Drive Unit - AR08.50-P-0244S
Engine 176 in model 223 with transmission 725.1
Shown on removed front axle
| 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 | |
| Risk of injury to skin and eyes due to handling of transmission oil. Health risk caused by swallowing transmission oil | Wear protective gloves, protective clothing and safety glasses. Do not pour transmission oil into beverage bottles. |
AS00.40-Z-0001-01A | |
| Topical note | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Notes on automatic transmission | AH27.19-P-0001-01NKB | ||
| Remove/install | |||
| 1 | Remove upper engine cover. | ||
| AP01.10-P-2405-01OA | |||
| 2 | Remove engine air intake duct upstream of air filter LH (1). | Fig 1 | |
| 3 | Remove lower engine compartment lining. | AR61.20-P-1105S | |
| 4 | Drain coolant for low-temperature coolant circuit. | AR20.00-P-1144SC | |
| 5 | Lower steering gear and secure against falling down. | AR46.20-P-0500S | |
| 6 | Remove coolant line (5) at oil cooler (7). | AR20.20-P-7441-01RQ | |
| 7 | Seal connection of coolant line (5) at oil cooler (7) with suitable stop plugs. | Fig 3 | |
| 8 | Remove coolant line (6) at power electronics control unit (N147/2). | AR20.20-P-7441-01RQ | |
| 9 | Seal connection of coolant line (6) at power electronics control unit (N147/2) with suitable stop plugs. | Fig 3 | |
| 10 | Remove coolant line (6) from coolant lines (8). | AR20.20-P-7441-01RQ | |
| 11 | Seal coolant line (8) with suitable stop plugs. | Fig 3 | |
| 12 | Remove coolant line (5) from coolant radiator connection (9). | AR20.20-P-7441-01RQ | |
| 13 | Seal coolant radiator connection (9) with suitable stop plugs. | Fig 3 | |
| 14 | Remove coolant line (5) at coolant return line (2) of charge air cooler. | Fig 2 | |
| 15 | Seal coolant return line (2) with suitable stop plugs. | Fig 3 | |
| 16 | Remove coolant line (5) from bracket (3). | ||
| 17 | Remove screw (4) from above from longitudinal member. | ||
| 18 | Remove brackets (10) from front axle carrier. | ||
| 19 | Move coolant lines (5, 6) diagonally to the right under front axle carrier and then remove towards the front. | ||
| 20 | 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 | |
| 21 | Perform engine test run and check coolant lines (5, 6), power electronics control unit (N147/2) and oil cooler (7) for leaks. | ||
| 22 | Install lower engine compartment lining. | AR61.20-P-1105S | |
| 23 | Install upper engine cover. | ||
| AP01.10-P-2405-01OA |