Tko600 Warning!!!!

[craigayl]

Anthony

More excellent analysis and possibilities.

The one thing that leads me away from a basic design flaw in the transmission is my experience with my own TKO and many more that I know of that have been beaten severely. I've seen many destroyed synchronizers, gear dog teeth, blocking rings and shift forks, but never the gears themselves. When I first saw the pictures, before I realized there were two identical failures, I thought something must of come loose inside the transmission and got crunched between the gears. Two identical failures tends to discount this.

But, along the same lines as you are thinking. What if a transmission was assembled missing one or two needle bearings???? That would increase the side movement and possibly cause a failure.... It could also cause some vibration that Fordfan69 described early on…… It's a possibility

Something I'm curious about.

The countershaft third gear thrusts against the countershaft fourth gear that is held on the countershaft with a snap ring. On the failed transmissions, is there any slop between these gears and is that snap ring in place? Something else to consider.

Craig