Remove/install belt drive components - AR13.20-P-0001ELS

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ENGINE 276.8 in MODEL 207, 212, 218

Fig 1: Identifying Belt Drive Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury caused by pinching or crushing when working on springs or spring bodies that are under tension	Use only approved tensioning devices; additionally screen off hazardous area if necessary. Check special tools for damage and proper operation (visual inspection). Wear protective gloves.	AS00.00-Z-0001-01A
1	Remove upper engine cover
2	Unfasten charge air cooler and pull to the front with attached coolant lines		AR09.41-P-6819ELS
3	Slacken poly-V belt and remove		AR13.22-P-3902-02MM
3	Slacken poly-V belt and remove	Do not use belt wax or similar products. This can lead to slipping of the poly-V belt. Swivel clamping device (1) at hexagon (2) counterclockwise, remove poly-V belt and detension clamping device (1). Pay attention to poly-V belt routing diagram.	AR13.22-P-3902-02MM
	Check
4	Check belt pulley profile and clamping device (1)	Check for damage, wear and dirt; replace if necessary.
5	Check guide pulleys (4, 5)	Check for damage, wear and dirt; replace if necessary.
6	Check poly-V belt
			AP13.22-P-1352EW
		Check for damage, wear and dirt; replace if necessary.
	Only perform operation steps 7 through 10 for remove/install of tensioning device (1)
7	Lock clamping device (1)	Swivel clamping device (1) at hexagon (2) counterclockwise and lock in place using drift (3).
8	Remove screw/bolts for clamping device (1)	Screw/bolt, poly-V belt tensioning device to timing case cover	*BA13.25-P-1001-01X
9	Remove clamping device (1) upwards
10	Slacken clamping device (1)	When replacing the clamping device (1) Clamp tensioning device (1) in a vise, swivel at hexagon (2) counterclockwise, pull out drift (3) and slacken tensioning device (1). The clamping device (1) can only be mounted in a locked condition.
	Only perform operation steps 11 and 12 for removal/installation of guide pulleys (4, 5)
11	Remove screw/bolts for guide pulleys (4, 5)	Screw/bolt, guide pulley to carrier	*BA13.25-P-1003-01X
11	Remove screw/bolts for guide pulleys (4, 5)	Screw/bolt, guide pulley to coolant pump	*BA13.25-P-1004-01X
12	Remove guide pulleys (4, 5)
13	Install in the reverse order

BELT TENSIONING DEVICE

Number	Designation		ENGINE 276
BA13.25-P-1001-01X	Screw/bolt, poly-V belt tensioning device to timing case cover	Nm	20

BELT TENSIONING DEVICE

Number	Designation		ENGINE 276
BA13.25-P-1003-01X	Screw/bolt, guide pulley to carrier	Nm	25

BELT TENSIONING DEVICE

Number	Designation		ENGINE 276
BA13.25-P-1004-01X	Screw/bolt, guide pulley to coolant pump	Nm	35