ar0520p6010cd

Check basic position of camshafts

Type ar · topic 05.20 · version 0105 · 2012-05-08

Applies to: ENGINES 651 in MODELS 166, 172, 204, 207, 212, 218, 221

Where it sits

Function group 1 Engine › 05 Engine timing › 05.20 Camshaft, camshaft adjustment — Series 166 · Series 172 · Series 204 · Series 207 · Series 212 · Series 218 · Series 221 · Series 651

EinPAS 15 Engine › 15.17 Engine timing › 15.17.30 Valve train — Series 166 · Series 172 · Series 204 · Series 207 · Series 212 · Series 218 · Series 221 · Series 651

AR05.20-P-6010CD

Check basic position of camshafts

23.4.12

ENGINES 651 in MODELS 166, 172, 204, 207, 212, 218, 221

Check basic position of camshafts

P05.10-2398-06

Shown on engine with belt pulley

1 Oil filler neck

2 Belt pulley/vibration damper

3 Marking on cylinder crankcase

A Marking on intake camshaft

B Marking on camshaft bearing cap

C Marking in bore for camshaft Hall sensor (B6/1)

D Marking on indexing wheel of the exhaust camshaft

Remove/install

1

Remove transmitter key

On vehicles with code (889) Keyless Go, press Start-Stop button repeatedly until the ignition is switched off.

2

Remove cylinder head cover trims

3

Unscrew oil filler cap

4

Remove camshaft Hall sensor

AR15.10-P-2000CD

5.1

Rotate engine at crankshaft using a counterholder in direction of engine rotation and place piston for cylinder 1 at top dead center (ignition TDC)

Except code (B03) ECO start-stop function

The engine must not be turned back. The timing chain can skip otherwise and can cause engine damage.

The 0° marking on belt pulley/vibration damper (2) must align with marking on cylinder crankcase (3).

Counterholder

*651589004000

5.2

Rotate engine at crankshaft using a suitable tool in direction of engine rotation and place piston for cylinder 1 at Top Dead Center (ignition TDC)

With code (B03) ECO start/stop function

The engine must not be turned back. The timing chain can skip otherwise and can cause engine damage.

The 0° marking on belt pulley/vibration damper (2) must align with marking on cylinder crankcase (3).

Checking

6

Check setting of the intake camshaft

The marking on the intake camshaft (A) must coincide with the marking on the camshaft bearing cap (B). If the marking on the intake camshaft (A) is not visible, turn the crankshaft through one revolution, set to 0° and check again.

Adjust the camshafts if the markings (A, B) still do not match.

See:

Set basic position of camshafts

AR05.20-P-6020CD

7

Check setting of exhaust camshaft

The marking on indexing wheel of the exhaust camshaft (D) must coincide with the marking in the bore for the camshaft Hall sensor (C).

Adjust camshafts if the markings (C, D) still do not match.

See:

Set basic position of camshafts

AR05.20-P-6020CD

8

Install in the reverse order

Check basic position of camshafts

Counterholder

651 589 00 40 00

Referenced documents