Remove/install belt pulley/vibration damper - AR03.30-P-1600GZA (ML350, ML550, GL450, GL550)

WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2012 Mercedes-Benz GL550, 2012 Mercedes-Benz GL450, 2011 Mercedes-Benz ML63, 2011 Mercedes-Benz ML550, and 2011 Mercedes-Benz ML350. However, it is still accessible from the selected car via links, so may be relevant.

ENGINE 272, 273 in MODEL 164, 251

Fig 1: Identifying Belt Pulley/Vibration Damper Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/install
	Risk of injury caused by fingers being pinched or crushed when removing, installing or aligning hoods, doors, trunk lids, tailgates or sliding roof.	Keep body parts and limbs well clear of moving parts.	AS00.00-Z-0011-01A
1	Turn key in ignition lock to position "0"	Vehicles with Keyless Go, code 889: Press Keyless Go start/stop button repeatedly until ignition is switched off.
2	Remove poly-V belt		AR13.20-P-0001GZA
3	Position engine at top dead center
4	Install retaining lock for crankshaft/starter ring gear		AR03.30-P-5000GZA
5	Remove center bolt (3)		*BA03.30-P-1001-01M
6	Detach belt pulley/vibration damper (2) from crankshaft	Installation: Place belt pulley/vibration damper (2) on crankshaft, and rotate to ensure that groove of belt pulley/vibration damper (2) is engaged in feather key (4) of crankshaft.
	Checking
7	Check contact surface of crankshaft radial sealing ring (5) at hub of belt pulley/vibration damper (2)	Check for scoring and galling; if necessary:→ Replace belt pulley/vibration damper (2)
8	Replace front crankshaft radial seal (5)	When replacing belt pulley /vibration damper (2) or in the event of leaks on crankshaft radial sealing ring (5).	AR03.20-P-3000GZA
9	Install in the reverse order
	Checking
	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
10	Conduct engine test run and check the engine for leaks

FLYWHEEL, DRIVEN PLATE, VIBRATION DAMPER, STARTER RING GEAR

Number	Designation			Engine 272	Engine 273
BA03.30-P-1001-01M	Center bolt for belt pulley on crankshaft	Stage 1	Nm	200	200
BA03.30-P-1001-01M	Center bolt for belt pulley on crankshaft	Stage 2	∠°	90	90