Replace Timing Chain - AR05.10-P-7601MRA
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
| Remove | |||
| 1 | Remove camshafts with camshaft positioners | AR05.20-P-6992MRA | |
| 2 | Disconnect timing chain (1) | AR05.10-P-7601-01MR | |
| Fig 2 | |||
| Check | |||
| 3 | Check chain slide bar (5) for wear and damage | If worn or damaged ↓ Replace chain slide bar (5). |
AR05.10-P-8127MRA |
| 4 | Check chain slide bars (3, 6) for wear and damage | If worn or damaged ↓ Replace chain slide bars (3, 6). |
AR05.10-P-8480MRA |
| Install | |||
| 5 | Draw in new timing chain (1) | AR05.10-P-7601-04MR | |
| Fig 3 | |||
| 6 | Rivet together timing chain (1) | AR05.10-P-7601-02MR | |
| Fig 2 | |||
| 7 | Install camshafts with camshaft positioners | AR05.20-P-6992MRA | |
| 8 | Check basic position of the camshafts using the installed chain tensioner (4) | In case of a complaint ↓ Set basic position of camshafts. |
AR05.20-P-6020MRA |
| 9 | Install cylinder head cover | AR01.20-P-5014MRA | |
| 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 buttoned-up and snug-fitting work clothes. Do not touch hot or rotating parts. | AS00.00-Z-0005-01A | |
| 10 | Perform an engine test run; in doing so check engine for proper operation and leaktightness | ||
| 11 | Install upper engine cover |