Mercedes-Benz: engine M272, M273. Manual - part 10

AR05.20-P-6010EW

Check basic position of camshafts

2.12.09

ENGINES  272, 273 in MODEL 212

1

Marking on belt pulley

2

positioning edge on timing case cover

3

Pulse wheel markings

P05.20-2163-06

Remove/install

 

1

Remove front engine cover

See Remove air filter housing.

AR09.10-P-1150EWS

2

Remove Hall sensors on camshafts 

*BA15.10-P-1002-03E

Checking

3

Turn engine at crankshaft in direction of 

 The 305° marking (1) on belt pulley must 

rotation of engine (arrow) to a 55° crank 

be aligned with positioning edge (2) on 

before ignition TDC (305° marking on belt 

timing case cover and markings (3) on pulse 

pulley) and check basic position of 

wheels must be located in center of bores 

camshafts

for Hall sensors. If necessary: 
Set basic position of camshafts.

AR05.20-P-6020EW

*001589650900

4

Install in the reverse order
Risk of accident

Secure vehicle to prevent it from moving by 

Danger!

 caused by vehicle starting 

AS00.00-Z-0005-01A

 

off by itself when engine is running.  Risk of  itself.
injury

Wear closed and snug-fitting work clothes.

 caused by contusions and burns 

during starting procedure or when working 

Do not touch hot or rotating parts.

near the engine as it is running

5

Carry out an engine test run and check 
engine for leaks

Position sensor

 

Number

Designation

Engine

Engine

272

273

BA15.10-P-1002-03E

Bolt, camshaft Hall sensor to front cover on cylinder head

Nm

8

8

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© Daimler AG, 07.04.13, G/07/14, ar05.20-p-6010ew, Check basic position of camshafts
ENGINES 272, 273 in MODEL 212