Paccar progressive shifting

try hitting the button twice during shift, worked on some older ones.

 

If not one of those auto shifters they call automatics you gotta mess with it to get them to skip a gear otherwise your stuck being the brains of the truck and that is your duty to figure out, then its just timing and a very good ear.

 

Your question is part whine.

What is left is that you generally have to shift in the region of 1500 RPM which is more or less close to or at the high horsepower curve on a given engine's power chart that starts down at torque.

There are two kinds of shifting. Progressive is the better of the two in terms of walking that truck away from everyone else and conserving fuel. If you want straight shifting winding out every gear then go do it. But your mileage will drop.

If you have a full automatic truck, it will shift when it feels like it when it wants to. You could use the manual mode if there is one, but it is not good for constant shifting. What do you care what the auto does on your truck.

As far as the other poster is concerned, he is describing a situation in which you are the brains that determine how to shift a manual 13 speed or some such transmission non auto in your truck.

There are no shortcuts in this industry. If you allow shifting to bother you and make you upset etc. I suggest taking some time off and decompress until you are ready to get back at it.

 

I pull 100.000lbs with a stock 455hp 13 speed 3.55 geared paccar it has tons of torque down low .. something must be wrong with yours I only go over 15 by a bit on 6% plus grades..