SEAL 4J2683 - Caterpillar

The Time Delay feature is used in this procedure to allow the horizontal time scale to be set small giving good resolution on the detonation sensor signal.If it is desired to view the detonation signal during combustion of a specific cylinder, the cylinder can be located by scrolling the combustion signals and knowing the cylinder firing order. This is accomplished by setting the Time Delay to ZERO, increasing (or decreasing) the Time Delay value and counting the combustion signals as they appear on the screen.To simplify this event, Table 2 through Table 9 have been developed for the G3600 engines. The tables show the Time Delay value to position the ion buffer signal for a specific cylinder on the left side of the screen, based on the horizontal time scaling. The tables are for 900 and 1000 rpm operation and should be used as general guidelines. Applications may have these values off by one Time Delay number.