Set basic position of camshafts - AR05.20-P-6020GZA (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.

ENGINES 272, 273 in MODEL 164, 251

Fig 1: Setting Basic Position Of Camshafts (Model 164, 251)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/install
1	Remove camshaft adjuster (13, 14) for exhaust camshafts		AR05.20-P-7201GZA
2	Remove tensioning rail bolts (23) and pull tensioning rail (24) upwards out of the timing case	Installation: Apply sealant to the tensioning rail bolts (23) before assembly.	AR01.30-P-5800-04V
			Fig 2
			Fig 3
			Fig 4
		Sealant	*BR00.45-Z-1013-01A
3	Lift timing chain and pull off camshaft adjuster (15) from intake camshaft (3) towards the front		AR05.20-P-7201GZA
4	Lift timing chain and turn camshaft adjuster (16) in basic position	See "CHECK BASIC POSITION OF CAMSHAFTS ".	AR05.20-P-6010-01VB
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 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
6	Conduct engine test run and check engine for leaks

Fig 2: Identifying Squeeze Gun (112 589 00 25 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 3: Identifying Impact Extractor (116 589 20 33 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 4: Identifying Threaded Stud (116 589 01 34 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1013-01A	Loctite 5970 sealant	A 003 989 98 20