When both the exhaust valve and the inlet valve follower are on the base circle, then the unit will be at firing Top Dead Center (TDC).This method is used to confirm the firing TDC of that unit.
And also the thread of this stud should be as same as the groove of the piston top, provided for taking the piston out. We focus on concise professional knowledge and good explanation with media. So before proceeding further let’s know why we want to know TDC of the piston.While overhauling or in case of some routine maintenance of four-stroke marine auxiliary engine, we must know the position of the particular unit piston for some work, e.g. "It helps to understand the TDC in an engine and the process to find it.

Pull the valve cover. What makes it slightly … Now connect stud with the piston. The cam of the engine has a base circle, and cam which is working face. the fuel pump plunger will match with set point at all times, except the time of injection. If pushrod is free to turn means that the valve is closed and that means the piston of that unit is at firing TDC.As the name suggested, in this method we have to watch the spilling of fuel from the fuel pump. No.

To find your engine’s top dead center, locate the crank pulley near the bottom of the engine and use a wrench to turn the nut in the center of the pulley. wikiHow's Thanks to all authors for creating a page that has been read 414,469 times. Yes, it's always a good idea to make sure your timing chain has correct timing.

Turn the pulley with the wrench until the piston in the first cylinder comes into contact with the other piston. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/9\/9e\/Find-Your-Engine%27s-Top-Dead-Center-%28TDC%29-Step-1-Version-2.jpg\/v4-460px-Find-Your-Engine%27s-Top-Dead-Center-%28TDC%29-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/9\/9e\/Find-Your-Engine%27s-Top-Dead-Center-%28TDC%29-Step-1-Version-2.jpg\/aid115332-v4-728px-Find-Your-Engine%27s-Top-Dead-Center-%28TDC%29-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"