Mercedes-Benz: engine M272, M273. Service 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