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Bringing to TDC of the compression stroke of the piston of the first cylinder

Top dead center (TDC) is the highest point of the stroke, defined by the rotation of the crankshaft. Each piston reaches TDC twice - at the end of the compression stroke and again at the end of the exhaust stroke, however, taken to mean a position TDC of the compression stroke TDC is. Distribution labels put on vibration damper (see. mounted on the front of the crankshaft pin match TDC compression stroke of the piston of the first cylinder.

Reduction of the piston in the TDC is a fundamental step when performing procedures such as removal of the rocker arms, valve adjustment, replacement of the distribution chain and sprockets and the removal of the distributor.

To activate any of the cylinder piston to TDC is necessary to make cranking. You can use one of the following methods offered. If you look at the engine, front, considered to be the normal rotation of the crankshaft clockwise.

Before proceeding with this procedure, make sure that the transmission in neutral and disconnect from the central terminal of the distributor coil wire for temporary decommissioning of the ignition system.

1. The preferred method is cranking using a large removable head end assembly in the vibration damper bolt screwed into the end of the shaft and driven in rotation collar.
2. You can use a remote starter switch, which will allow more time to save. Connect the switch to terminals S (Switch) and B (Battery) starter. As close to summing up the piston TDC by a switch, complete the procedure in a manner proposed in the previous paragraph.
3. If it is possible to resort to the help of an assistant, the starter can be rotated short inclusions of the driver's seat. After approaching the piston to TDC, the procedure is completed with the help of a replaceable head (see para.

PERFORMANCE ORDER

Note the position of the spark plug wire terminals of the first cylinder on a distributor cover in relation to its body. To guarantee apply felt-tip pen or chalk on the distributor directly under the label of the terminal proper. Give fixing screws, remove the cover from the distributor and move it aside. Terminal numbers applied to the spark plug wires, distributor close to where they can be found, if the wires are installed factory. If the numbers are not available, pre clearly label the wires. Having found on the cover of the distributor terminal of the spark plug of the first cylinder, put on the distributor corresponding label located directly below this terminal. Uncover the distributor (see chap. Adjustment and routine maintenance). Rotate the crankshaft (see. P. "In order to bring the piston ...") so that the risk on its vibration damper aligned with the zero mark on the scale of the distribution chain cover. Index or TDC and the damper are usually located in the lower portion of the front wall of the engine near the pulley torque drive belt. Rotate the crankshaft so that the risk on the vibration damper (arrow) appeared right in front of the zero point of the scale on the cover of the distribution chain. Take a look at the distributor slider - his nose should be sent directly to the marked on the label of the distributor. If it is not, the first cylinder is at TDC of the exhaust stroke. Uncover the distributor and make sure the slider is rotated nose to the label on the housing (arrow). To bring the piston of the first cylinder to TDC of the compression stroke cranked shaft for one full rotation (360 ?�) clockwise. Now tip runner should turn in the direction of the label. When the slider is rotated in the direction of arrangement of the terminals of the spark plug of the first cylinder on the distributor cover (label on the body), and the label distribution properly aligned, the first cylinder is at TDC compression stroke. After TDC the piston is a compression stroke of the first cylinder, the other may transferred to the same position by successively turning crankshaft by 180 ?� in accordance with the firing order (see. Specifications).