Timing Belt Adjustment Opel Antara I

Timing Belt Adjustment

Remove

1. For removing and installing timing belt system components, refer to Timing Belt System Replace .
2. Remove the vacuum pump. Refer to Vacuum Pump Replace .

Adjust

1. Rotate the camshaft and align the hole on the top point.
2. Rotate the crankshaft and align the mark on the crankshaft sprocket.

3. Remove the crankshaft holder hole cap bolt (a).
4. Insert the crankshaft holder EN-48246 into the crankshaft holder hole (b).

Note: Rotate the crankshaft sprocket a little and simultaneously insert the crankshaft holder.

5. Install the camshaft holder EN-48245 onto the camshaft rear side (c).

6. Align the sprocket mark on the timing belt rear cover mark.

7. Install the camshaft sprocket with the tightening bolt manually.
8. Install the timing belt.
9. Install the timing belt tensioner with the tightening bolt manually.

10. Turn the hex-key (a) tab in a count-clockwise direction to tension the belt. Turn until the point aligns with the notch (b).
11. Aligning with notch, install the timing belt tensioner bolt.
12. Install the camshaft sprocket bolt.

Tighten

Tighten the timing belt tensioner bolt to 25 N•m (18.4 lb-in).

Tighten the camshaft sprocket bolt to 133 N•m (98.1 lb-in).

13. Remove the camshaft holder EN-48245 and crankshaft holder EN-48246.
14. Turn the crankshaft in a clockwise direction more 2 cycles and check the mark on the crankshaft sprocket.
15. After alignment of the timing belt, install the crankshaft holder hole cap bolt.

Tighten

Tighten the crankshaft holder hole cap bolt to 30 N•m (22.1 lb-ft).

Important: If No.1 cylinder is not aligned at TDC point, rework again above procedure No.3 to No.9 until aligned.

Important: Because the setting of these service special tools aligns No.1 cylinder at TDC point, if not exactly aligned, will have an influence on engine performance and emission.

Install

1. Install the vacuum pump. Refer to Vacuum Pump Replace .