Opel:: Omega B:: Top Dead Point (TDP) of the N1 piston

3.3.3. Top Dead Point (TDP) of the N1 piston

The highest point which is reached by the N1 piston at the time of a compression step is accepted to the top dead point.

The N1 piston is located in a forward part of the right number of cylinders from a gas-distributing belt.

PERFORMANCE ORDER

1. Disconnect a wire of the minus plug of the accumulator and, if necessary, unscrew spark plugs.
2. Remove an external cover of a gas-distributing belt.

3. Turn a bent shaft so that synchronizing tags of asterisks of camshafts were directed up and combined with cuts in a cover of a gas-distributing belt (are specified by shooters). Do this procedure as for the right head of cylinders (the drawing at the left), and for left (the drawing on the right). On each asterisk there are two tags. The table on use of these tags is given below.
	4. Combine a tag on a pulley of a bent shaft with the index (are specified by shooters) on a casing of the oil pump. When tags are combined, the N1 piston is in VMT at the time of a compression step.

Camshaft asterisks	Tag which needs to be used
final valves of the right head of cylinders	1
inlet valves of the right head of cylinders	2
inlet valves of the left head of cylinders	3
final valves of the left head of cylinders	4