Replace Front Crankshaft Radial Sealing Ring - AR03.20-P-3000MRA
WARNING: This page is about a different car, the 2023 Mercedes-Benz GLC300, 2022 Mercedes-Benz GLC300, 2021 Mercedes-Benz GLC300, 2020 Mercedes-Benz GLC350e, and 2020 Mercedes-Benz GLC300. However, it is still accessible from the selected car via links, so may be relevant.
Engine 274.9 in model 205
Engine 274.9 in model 253
Shown on engine 274.9 in model 205 (except 205.047/147/247)
Fig 1: Front Crankshaft Radial Sealing Ring Components Location - Engine 274.9 In Model 253 (Shown On Model 205)
| Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil | Wear protective gloves, protective clothing and safety glasses. Do not fill engine oil into beverage containers. |
AS18.00-Z-0001-01A | |
| Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | ||
| Remove | |||
| 1 | Remove belt pulley/vibration damper (3) | AR03.30-P-1600MRA | |
| 2 | Use suitable tool to pry radial shaft sealing ring (5) out of timing case cover | Do not damage crankshaft (1) and timing case cover and use to push out a clean rag as a base. Leaks can occur otherwise. |
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| 3 | Check contact surface of the radial shaft sealing ring (5) on hub of the belt pulley/vibration damper (3) for scoring and galling | In a case of scorch marks and galling ↓ replace belt pulley/vibration damper (3). |
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| Install | |||
| 4 | Install new radial shaft sealing ring (5) | AR03.20-P-3000-01MR | |
| Fig 2 | |||
| 5 | Install belt pulley/vibration damper (3) | AR03.30-P-1600MRA | |
| 6 | Check engine oil level and correct | ||
| AP18.00-P-1811MP |