Oil pressure switch (page 3 of 3)

9. If camshaft timing belt is to be reused, mark position of tensioner backplate to cylinder head for belt tensioning reference. Mark direction of rotation on belt using chalk.₁
10. Loosen tensioner pulley Allen screw₁ /₂ turn.
11. Loosen tensioner backplate bolt /₂ turn.
12. Push tensioner pulley down to fully OFF position.
13. Tighten tensioner backplate screw to 10 Nm.
14. Lower engine to enable timing belt to be removed.
15. Ease timing belt from camshaft gears and crankshaft gear, remove timing belt.

CAUTION: Ease timing belt from the gears using the fingers only, metal levers may damage the belt and gears. Do not rotate the crankshaft with the timing belt removed and the cylinder head fitted.

Refit

1. Clean crankshaft pulley, timing belt gears, coolant pump drive gear and tensioner pulley.

CAUTION: If the sintered gears have been subjected to prolonged oil contamination, they must be soaked in a solvent bath and then thoroughly washed in clean solvent before refitting. Because of the porous construction of sintered material, oil impregnated in the gears will emerge and contaminate a new belt.

2. Check correct alignment of camshaft gear timing marks for 90° BTDC and that tool 18G 1570 is locking camshaft gears.

3. Ensure dots on crankshaft gear are aligned with flange on oil pump and that tool is locking flywheel.