Replace front crankshaft radial sealing ring - AR03.20-P-3000Q

ENGINE 271.940 in MODELS 203.042 /242 /742, 209.342 /442

ENGINE 271.941 in MODELS 211.042 /242

ENGINE 271.946 in MODELS 203.046 /246 /746

ENGINE 271.948 in MODELS 203.040 /740

ENGINE 271.921 in MODEL 203.730

ENGINE 271.955 in MODELS 209.341 /441

ENGINE 271.956 in MODELS 211.041 /241

Fig 1: Identifying Front Crankshaft Radial Seal

	Remove/install
	Risk of death caused by vehicle slipping or toppling off the lifting platform.	Align vehicle between columns of lifting platform and position four support plates at lifting platform support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
1	Remove front engine compartment paneling	Model 203, 209	AR61.20-P-1105P
		Model 211	AR61.20-P-1105T
2	Remove poly-V-belt		AR13.22-P-1202QK
3	Remove belt pulley / vibration damper	Insert counterholder into the belt pulley and slacken center bolt	AR03.30-P-1600QK
			*BA03.30-P-1001-01I
			Fig 3
4	Use a screwdriver to press out crankshaft radial seal (1)	Do not damage crankshaft and mounting bore for the crankshaft radial sealing ring (1), otherwise leakage occurs. Use a clean cloth as a base.
		Installation: Install front crankshaft radial seal.	AR03.20-P-3000-01QP
			Figure
5	Install in the reverse order
	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 running engine	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not grasp hot or rotating parts.	AS00.00-Z-0005-01A
6	Check for leaks with engine running	Determine oil leakage after spraying the cleaned and dried surrounding area with MB white contrast spray.	*BR00.45-Z-1001-03A
7	Check engine oil level	The vehicle must be positioned horizontally on the wheels, otherwise false measurements can occur.

FLYWHEEL, DRIVEN PLATE, VIBRATION DAMPER, STARTER RING GEAR

Number	Designation			Engine 271
BA03.30-P-1001-01I	Central bolt, belt pulley to crankshaft	Stage 1	Nm	200
BA03.30-P-1001-01I	Central bolt, belt pulley to crankshaft	Stage 2	∠ °	90

Fig 2: Identifying Drift (271 589 01 15 00)

Fig 3: Identifying Counterholder (271 589 00 40 00)

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1001-03A	Crack detector	A 000 989 03 59