Top dead center (TDC) of the piston of the first cylinder (Escort 5)

The top dead center (TDC) of a piston is the point through which each piston passes as the crankshaft rotates. Each piston reaches the TDC position at the end of the compression stroke, and then again at the end of the exhaust stroke. For the purpose of setting the engine timing mechanism, the TDC of the piston of the first cylinder is used. Cylinder No.1 is on the toothed belt side.



Remove the upper timing belt cover Raise the front of the vehicle and support it on stands.

Unscrew the mounting bolts and remove the cover from the back of the crankshaft pulley.

Unscrew the mounting bolts and remove the cover from the back of the crankshaft pulley. Turn the engine with a wrench by the crankshaft pulley until the timing mark on the crankshaft pulley aligns with the TDC mark (0) on the timing mechanism cover. As the mark on the pulley approaches, the piston of cylinder No.1 simultaneously approaches the top of the cylinder.

In this position of the crankshaft, pistons 1 and 4 of cylinders are in the upper position. To ensure that piston No.1 of cylinder is in the compression stroke, check that the mark on the camshaft pulley is exactly aligned with the TDC mark on the front side of the cylinder head. If the pointer is not aligned, turn the crankshaft pulley one full revolution, and the timing marks should be aligned (see Fig. 2B.3. 2B.4).







After setting the piston of cylinder 1 to TDC in the compression stroke, install the crankshaft pulley cover, lower the car, and install the upper timing belt cover.

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