Remove, install timing chain

AR05.10-P-7602MFD

Remove, install timing chain

14.08.2019

Engine

282 in model 118, 177, 247

1

Timing chain

5

Tensioning rail

9

Slide rail

2

Chain tensioner

6

Camshaft positioner for intake camshaft

10

Exhaust camshaft control valve

3

Markings

7

Crankshaft gear

12

Slide rail

4

Marking

8

Camshaft positioner for exhaust camshaft

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

 Caution

Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil

Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.

AS18.00-Z-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Check basic position of camshafts.

AR05.20-P-6010MFD

  Allow locating tools to be attached when the timing is set.

 Installation: Only install upper engine cover after the leak test.

 Locating tool

*282589002300

2

Remove chain tensioner (2).

AR05.10-P-7800MFD

 Installation: Only install lower engine compartment paneling after leak test.

3

Remove tensioning rail (5) of the timing chain (1).

AR05.10-P-8510MFD

4

Remove slide rails (9, 12) of the timing chain (1).

AR05.10-P-8480MFD

5

Release exhaust camshaft control valve (10), remove, and remove camshaft positioner of the exhaust camshaft (8) with timing chain (1).

Topical note

Notes on threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A



Specified engine oils (service) - Overview

BB00.40-P-0223-02A

 Control valve of pulse wheel/camshaft positioner to camshaft

*BA05.20-P-1003-05B

6

Remove timing chain (1) from camshaft positioner of the exhaust camshaft (8).

 Installation: The color coding (arrows) on the timing chain (1) must be congruent with the markings (3) on the camshaft positioner of the intake camshaft (6) and camshaft positioner of the exhaust camshaft (8).
The color coding (arrow) and the marking (4) on the crankshaft gear (7) must be congruent.

7

Remove locating tool of the crankshaft.

 Locating tool

*282589002300

8

Take timing chain (1) off crankshaft gear (7) and remove.

9

Install in the reverse order.



Check

10

Check engine oil level, correct if necessary.



AP18.00-P-0101MFB

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

11

Perform engine test run. While doing so, check engine for proper operation and leak tightness.

12

Install lower engine compartment lining.

AR61.20-P-1105MFA

13

Install upper engine cover.



AP01.10-P-2405-01D

 Camshaft, camshaft adjustment

Number

Designation

Engine 282

BA05.20-P-1003-05B

Control valve of pulse wheel/camshaft positioner to camshaft

Stage 1

Nm

30

Stage 2

°

34