Remove/Install Timing Chain Tensioning Rail - AR05.10-P-8510MRI

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

Fig 1: Timing Chain Tensioning Rail Components Location - Engine 264 In Model 253

Courtesy of MERCEDES-BENZ USA

	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
	Remove/install
1	Remove timing case cover.		AR01.40-P-8000MRI
2	Remove cylinder head.		AR01.30-P-5800MRI
3	Remove tensioning rail timing chain (2).
	Check
4	Check tensioning rail timing chain (2) for wear and damage.	If damage or wear is present. ↓ Replace tensioning rail timing chain (2).
5	Install in the reverse order.