What is transmission inertia brake Eaton K3637 NIB?

Answer 1

An inertia brake on Eaton fuller auto shift gearboxes (which are manual gearboxes that are automatically shifted) is used to slow the input shaft so the transmission can go from neutral to a forward or reverse gear if the clutch break should fail or the clutch where to get out of adjustment. The computer will not try to shift it if the input shaft is still spinning. If it is needed you will have a long wait before the truck will shift into a gear if it is in neutral. On a manual transmission if the clutch break does not work it will grind if you try to shift into a gear from neutral but you will sense the clutch is not engaged and just jam it in. but the computer does not know if the clutch is dragging or not disengaged imagine what would happen if it tried to shift to 1st and the clutch were in how long would it try even one or two seconds would be a mess. If you grind the transmission going into gear it is your decision but what if it did it automatically or you could not move because the computer would not shift to prevent a little noise the computer can't make the same decisions we can.

I am assuming you are familiar with truck transmissions if not they are "crash boxes" fully unsynchronized and require much more skill than manual transmissions in cars all car and light truck (up to 26,000 lbs.) transmissions are synchronized since at least the 1950s although some had an unsynchronized 1st gear.