Mercedes-Benz: engine M272, M273. Service manual — part 1

AR05.10-P-7601EW

Replace timing chain

5.2.09

ENGINES

272, 273 in MODEL 212

P05.10-2238-09

1

Exhaust camshaft

3

Old timing chain

5

Pulse wheel markings

2

Intake camshaft

4

New timing chain

6

Markings on camshaft adjuster

7

Markings on camshaft adjuster

P05.10-2239-04

Removing

1

Disconnect battery ground cable

AR54.10-P-0003EW

Notes on battery

AH54.10-P-0001-01A

2

Remove spark plugs
Replace spark plugs

AP15.10-P-1580EW

3

Remove exhaust and intake camshafts (1, 2)

AR05.20-P-6992EW

at right cylinder head

4

Disconnect old timing chain (3)

AR05.10-P-7601-01VA

*602589009800

*602589023300

*602589056300

*602589056301

Install

5

Draw in new timing chain (4)

AR05.10-P-7601-04VA

*602589009800

*272589036300

6

Rivet new timing chain (4)

AR05.10-P-7601-02VA

*602589009800

*272589003900

*272589006300

*272589016300

*271589016300

Страница 1 из 3

© Daimler AG, 07.04.13, G/07/14, ar05.10-p-7601ew, Replace timing chain
ENGINES 272, 273 in MODEL 212

*BA05.10-P-1007-01B

7

Crank engine at crankshaft in direction of

See "Check basic position of camshafts with

AR05.20-P-6010EW

rotation of engine to a 55° crank angle

front cover installed at cylinder head at a

before ignition TDC on first cylinder (305°

55° crankshaft angle before ignition TDC ".

marking on belt pulley)

*001589650900

The markings (5) on pulse wheels of

intake and exhaust camshaft (1, 2) on the
left cylinder head must be located centrally
in bores for camshaft Hall sensors. If this is
not the case, turn engine at crankshaft in
direction of engine rotation through one
revolution.

8

Crank engine at crankshaft in its direction of
rotation through a 95° crank angle to a 40°
crank angle after ignition TDC on first
cylinder

9

Install intake camshaft (1) and exhaust

AR05.20-P-6992EW

Markings (6) point upwards and markings

camshaft (2) on right cylinder head in the

(7) align with contact surfaces on the

basic position

cylinder head covers.
See "Check basic position of camshafts with

AR05.20-P-6010-01VB

front cover removed at the cylinder head at
40° crankshaft angle after ignition TDC ".

10

Crank engine at crankshaft in the direction

AR05.20-P-6010EW

The markings (5) on pulse wheels of

of rotation of the engine and check that the

intake and exhaust camshafts (1, 2) must be

basic position of the camshafts for an

located centrally in bores for camshaft Hall

installed front cover on the cylinder head is

sensors.

at a 55° crank angle before ignition TDC
(305° marking on the belt pulley)

11

Install spark plugs
Replace spark plugs

AP15.10-P-1580EW

12

Connect ground cable to battery

AR54.10-P-0003EW

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

13

Carry out an engine test run and check
engine for leaks

Timing chain, chain tensioner

Number

Designation

Engine

Engine

272

273

BA05.10-P-1007-01B

Bolt for timing chain rivet element

Nm

32

32

(reference value)

602 589 00 98 00

602 589 02 33 00

602 589 05 63 00

602 589 05 63 01

Case

Chain separating tool

Thrust spindle

Thrust pins

Страница 2 из 3

© Daimler AG, 07.04.13, G/07/14, ar05.10-p-7601ew, Replace timing chain
ENGINES 272, 273 in MODEL 212

272 589 03 63 00

272 589 00 39 00

272 589 00 63 00

272 589 01 63 00

Assembly link

Riveting tool

Assembly inserts

Guide

271 589 01 63 00

001 589 65 09 00

Assembly inserts

Wrench socket

Страница 3 из 3

© Daimler AG, 07.04.13, G/07/14, ar05.10-p-7601ew, Replace timing chain
ENGINES 272, 273 in MODEL 212

AP15.10-P-1580EW

Replace spark plugs

3.5.13

ENGINE

157, 272, 273, 276, 278 in MODEL 212

ENGINE

157, 276, 278 in MODEL 218

ENGINE

272, 273, 276, 278 in MODEL 207

Shown on engine 272.983 in model 212.057

01

Spark plug wrench

1

Spark plug connector

3

Ignition coil connector

4

Ignition cable

R4

Spark plugs

P15.10-2349-06

Remove/install

Risk of death

Danger !

caused by contact with parts

Do not touch parts which conduct high

AS15.10-Z-0001-01A

conducting high voltages.

voltages. Persons who have electronic
implants (e.g. cardiac pacemakers) should
never perform any work on the ignition
system.

Risk of injury . Skin or eye injuries may

Danger !

Wear protective gloves, protective clothing

AS00.00-Z-0002-01A

result when handling hot or glowing objects.

and safety glasses, if necessary.

Notes on avoiding damage through

AH00.00-P-5000-01A

contamination and foreign objects
Notes on avoiding damage to ignition system

AH15.10-P-0002-01V

1

Switch off ignition

2

Open engine hood

3

Remove ignition coils

Model 207 except engine 276, 278

AR15.12-P-2003CV

Model 212 except engine 157, 276, 278

AR15.12-P-2003EW

ENGINE 276, 278 in MODEL 207

AR15.12-P-2003FH

ENGINE 157, 276, 278 in MODEL 212, 218

AR15.12-P-2003EL

4

Detach spark plug connectors (1) from spark
plugs (R4)

ENGINE 272.982/983/984

AR15.12-P-1010-01CDE

Installation: Observe correct assembly of

spark plug connector and ignition coil
connector (1, 3) and correct routing of
ignition lines (4).

*272589013300

Puller

Check

5

Check spark plug connector (1)

Check for damage, deformation and

crack formation, replace if necessary.

6

Check ignition coil plug (3) and ignition lines

ENGINE 272.982/983/984

(4)

Check for damage, deformation and

crack formation, replace if necessary.

Страница 1 из 2

© Daimler AG, 07.04.13, G/07/14, ap15.10-p-1580ew, Replace spark plugs
ENGINE 157, 272, 273, 276, 278 in MODEL 212 ENGINE 157, 276, 278 in MODEL 218 ENGINE 272, 273, 276, 278 in MODEL 207