Set the TDC according to the mark on the camshaft pulley (when installed according to the marks on the flywheel or crankshaft pulley, the piston of either the 1st or 4th cylinder may be in this position). After this, be sure to check that the marks on the flywheel or the toothed pulley of the crankshaft match (if the generator drive pulley is removed). If the marks on the flywheel or crankshaft pulley do not match, then the valve timing is out of alignment (piston of the 1st cylinder is not set to TDC). In this case, it is necessary to remove the camshaft drive belt and turn the crankshaft until the marks are aligned.
The TDC marks are applied to the camshaft toothed pulley (protrusion) and the rear cover of the camshaft drive belt (antennae).
In addition, TDC marks are applied to the flywheel (risk) and the scale of the rear shield of the clutch housing (v-neck). For clarity, the gearbox has been removed from the car.
Additionally, TDC marks are applied to the crankshaft toothed pulley (dot) and the oil pump cover (v-neck). These marks are only visible when the alternator drive pulley is removed.
To set the piston of the first cylinder to the TDC position (top dead center) to measure the compression stroke of a car, you will need: a 17 mm open-end wrench and a 10 mm socket wrench.
1. Disconnect the wire from the negative terminal of the battery.
2. Set the gear shift lever to neutral position, place wheel chocks ("shoes") under the vehicle wheels.
3. Open the hood and remove the three screws securing the front timing belt cover (camshaft drive). Please note: the wire holders are also secured with the side mounting screws of the camshaft drive belt cover.
4. Remove the front timing belt cover.
5. Turn the crankshaft by the bolt securing the generator drive pulley to it until the marks on the camshaft pulley and the rear cover of the drive belt align.
6. Remove the plug from the hole in the clutch housing and check the alignment of the marks on the flywheel.