Mercedes-Benz: engine M272, M273. Service manual — part 5

AR05.20-P-6010-01VB

Inspect basic position of camshaft

Shown without pulse wheels on the
camshaft adjusters

1

Crank the engine at the crankshaft in
Turn the direction of engine rotation
(arrow) to 40° crank angle after ignition
TDC.

The 40° marking (1) on the belt

pulley must be aligned with the
positioning edge (2) on the timing case
cover.
The markings (3) on the camshaft
adjusters face upward, and the
markings (4) align with the contact
surfaces on the cylinder head covers.

P05.20-2164-06

Страница 1 из 1

© Daimler AG, 07.04.13, G/07/14, ar05.20-p-6010-01vb, Inspect basic position of camshaft
ENGINE 272, 273 Grundstellung der Nockenwellen bei ausgebauten vorderen Deckeln am Zylinderkopf bei 40° Kurbelwinkel nach OT'

AR05.20-P-7201-05VA

Lock the gear backlash compensation

The tooth flanks (1, 2) are held against each other by spring pressure and should not be

skewed, otherwise the camshaft adjuster will be irreparably damaged

1

Insert the drift (3, diameter 3mm) into the bore (4) of the cover plate and lock the tooth
flanks (1, 2) with each other.

Push the drift (3) through to the end of tooth flank (2).

To allow the drift (3) to be inserted more easily, align the tooth flanks with each other
(in the direction of the arrows).

Shown on camshaft adjuster, engine 273.965

P05.20-2160-03

Shown on camshaft adjuster, engine 272.968

P05.20-2322-01

Страница 1 из 1

© Daimler AG, 07.04.13, G/07/14, ar05.20-p-7201-05va, Lock the gear backlash compensation
ENGINE 272, 273

AR05.20-P-7201-06VA

Loosen/tighten the center valves

Camshaft, camshaft adjustment

Number

Designation

Engine

Engine

272

273

BA05.20-P-1009-02A

Center valve for pulse wheel/

Nm

145

145

camshaft adjuster to camshaft

Counterhold camshafts at the rear with a Torx screwdriver bit using a suitable tool to

unfasten and fasten the center valves. Before installing, the center valves must be lubricated
with oil on the contact surfaces with the pulse wheels.

Center valves of right cylinder head

1

Loosen the center valves in the direction of the arrow.

2

Tighten the center valves against the direction of the arrow.

P05.20-2161-01

Center valves of left cylinder head

3

Loosen the center valves in the direction of the arrow.

4

Tighten the center valves against the direction of the arrow.

P05.20-2162-01

Страница 1 из 1

© Daimler AG, 07.04.13, G/07/14, ar05.20-p-7201-06va, Loosen/tighten the center valves
ENGINE 272, 273

AR05.20-P-6010-01VB

Inspect basic position of camshaft

Shown without pulse wheels on the
camshaft adjusters

1

Crank the engine at the crankshaft in
Turn the direction of engine rotation
(arrow) to 40° crank angle after ignition
TDC.

The 40° marking (1) on the belt

pulley must be aligned with the
positioning edge (2) on the timing case
cover.
The markings (3) on the camshaft
adjusters face upward, and the
markings (4) align with the contact
surfaces on the cylinder head covers.

P05.20-2164-06

Страница 1 из 1

© Daimler AG, 07.04.13, G/07/14, ar05.20-p-6010-01vb, Inspect basic position of camshaft
ENGINE 272, 273 Grundstellung der Nockenwellen bei ausgebauten vorderen Deckeln am Zylinderkopf bei 40° Kurbelwinkel nach OT'