Gear train

[Rawze]

If there are any loose springs in a scissor gear,.. it will eventually eat through the retaining screw and have a high possibility of destroying the entire front of the engine when it fails. - whenever someone comes here and does an inframe with me, I throw those things in the trash and put a regular gear there instead whenever possible. They really do not reduce noise to any measurable amount compared with the sound of the engine, and there is no less wear in engines with them than wothout.

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-- 90% of the time, when there is a medium-pitched gear hum that goes up and down with rpm on the ISX, ... it is the oil pump that is causing it, not anything in the gear train. When it starts to becomes louder than the engine at say, 20+ feet away or so, that is when someone should be concerned. - It is common for me to be able to walk across a truck stop parking lot and hear what trucks have a worn out oil pump.