Remove/Install Timing Chain Tensioner - AR05.10-P-7800MRI
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 264 in model 205, 253
| 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/install | |||
| 1 | Remove coolant pump. | AR20.10-P-1271MRI | |
| 2 | Pierce cap (1) in center with suitable means and pry out. | Do not pry out cap (1) at side. Timing case cover will otherwise be damaged. |
|
| 3 | Remove chain tensioner (2). | Only reuse chain tensioner (2) if it had no noticeable problems in prior operation and no chain drive components were replaced. Engine damage can otherwise occur. |
*BA05.10-P-1001-03B |
| Check | |||
| 4 | Check whether chain tensioner (2) has fully extended. | If there is a problem, ↓ Replace chain tensioner (2). |
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| 5 | Check bracket (4) for damage. | If damage is present, ↓ Remove timing case cover, remove screws (3) and replace bracket (4). |
AR01.40-P-8000MRI |
| *BA05.10-P-1002-03B | |||
| 6 | Install in the reverse order. | ||
| 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 hazard area. | AS49.00-Z-0001-01A | |
| 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 | |
| 7 | Perform engine test run. While doing so, check engine for proper operation and leak tightness. | ||
| 8 | Install lower engine compartment lining. | AR61.20-P-1105LW |
CHAIN DRIVE, BELT DRIVE
| Number | Designation | Engine 264 | |
|---|---|---|---|
| BA05.10-P-1001-03B | Screw/bolt, chain tensioner to bracket | Nm | 40 |
CHAIN DRIVE, BELT DRIVE
| Number | Designation | Engine 264 | |
|---|---|---|---|
| BA05.10-P-1002-03B | Screw/bolt, chain tensioner holder to crankcase | Nm | 20 |