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

ENGINES 272 in MODEL 204 

ENGINES 272, 273 in MODEL 207 

Illustrated on model 204 

Fig 1: Identifying Belt Drive Remove/Install Components - Model 204 (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Belt Drive Remove/Install Components - Model 204 (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Removing
	Risk of injury  caused by moving parts that can pinch, crush  or, in extreme cases, even sever  extremities	No parts of the body or limbs should be within the operating range of the mechanism when moving components.	AS00.00-Z-0009-01A
1	Open engine hood and raise to vertical position	Model 204
		Model 207	AR88.40-P-1000EW
2	Pull out front engine cover (1) upwards from mounts
3	Slacken poly-V belt (2), take off and detension tensioner pulley	To do this use a hexagon (4) on the poly-V belt tensioning device (3).
	Checking
4	Check profile of belt pulley and poly-V belt tensioning device (3) for damage and soiling
5	Check poly-V belt (2) for wear and damage and replace if necessary
	Check visible area of poly-V belt for wear	Model 204	AP13.22-P-1352CW
		Model 207	AP13.22-P-1352EW
	Only perform steps 6 through 10 for removal/installation of poly-V belt tensioning device (3)
6	Replace poly-V belt tensioning device (3) with drift (8)
7	Remove bolts (3b) and poly-V belt tensioning device (3)		*BA13.25-P-1001-01P
	Checking
8	Check poly-V belt tensioning device (3) for damage and soiling; replace if necessary
9	Remove drift (8) and detension poly-V belt tensioning device (3)	Only when replacing the poly-V belt tensioning device (3)
10	Install in the reverse order
	Only perform steps 11 through 14 for removal/installation of guide pulleys (5)
11	Remove fan unit	Engine 273	AR20.40-P-5050CW
12	Pry off covers (5b)
13	Remove bolts (5a) and remove guide pulleys (5)		*BA20.10-P-1004-01U
14	Install in the reverse order
	Install
15	Fit on and tension (2) as per routing diagram and tension	To do this use a hexagon (4) on the poly-V belt tensioning device (3). Do not use wax or similar products, as this may cause poly-V belt (2) to slip.	AR13.22-P-3902-02SX
16	Install front engine cover (1)
	Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
17	Carry out engine test run