Risk of down-shifting?
I have a 2004 Coachmen Sportscoach with a 330hp CAT, and 6-speed Allison transmission. Here is my question. Do I risk damaging my transmission if I down-shift in order to slowdown or to save on my bra...
Forum Discussion
12th Man Fan wrote:
The Allison transmissions I am familiar with will not allow you to downshift if the RPMS are too high. It has it's own computer to prevent damage.
If you try to downshift at too high RPms the tranny will not shift.
Ditto. On fact the Allison on gas RV's has a feature called Grade brake.. That is what it does.. You Engate the brakes (I usually have to do it twice) and it will downshift if it can.. If the grade is enough that you still pick up speed it will upshift when the RPMs get too high ... A very smart transmission.
