Remove/install camshaft adjusters

AR05.20-P-7201CW

Remove/install camshaft adjusters

16.5.11

 

Remove/install

1

Remove cylinder head cover

AR01.20-P-5014CW

2

Remove front cover from cylinder head

AR01.30-P-5700CW

3

Crank engine at center bolt for the crankshaft in direction of rotation until piston of cylinder 1 is positioned at ignition TDC

 The TDC marking on belt pulley/ vibration damper must be aligned with positioning edge on timing case cover.

Cams for the intake and exhaust camshaft at cylinder 1 must be positioned upright at an angle.

 Installation: Inspect basic position of camshafts.

AR05.20-P-6010CW



*001589650900

4

Mount retainer (2)

 Mount retainer (2) over cutouts in the camshaft housing-top section.



*271589006100

5.1

Release timing chain

Engine 271.9

AR05.10-P-7605-01TK



*271589003100

5.2

Remove chain tensioner

Engine 271.8

AR05.10-P-7800EVO

 Installation: Install new chain tensioner.

6

Remove center bolt and remove camshaft adjuster (3)

 At the same time unhinge timing chain and secure against falling down. The direction of loosening for center bolt on intake or exhaust camshaft is the same (see arrow).

7

 Installation: Camshaft adjusters (3) do not require any particular adjustment as they feature a positioning pin (1). To avoid confusion, the camshaft adjusters (3) are marked with "A" for exhaust camshaft and with "E" for intake camshaft.

 Engine 271.8

*271589001000



*BA05.20-P-1002-02A

8

Install in the reverse order

Number

Designation

Engine
271.8

Engine
271.9

BA05.20-P-1002-02A

Center bolt, camshaft adjuster to camshaft

Stage 1

Nm

130

90

Stage 2

°

-

-