What is it with KW?

Have a look at the video.

[ame]http://www.youtube.com/watch?v=ULEqLTQgMIM[/ame]



You're only getting half the applied pressure on the foot valve to the limit valve.

 

You're welcome. Keep the link because a lot of Mechanics don't even have a clue that the valve exists on some trucks.

 

Another thought I had is you are used to your Star that has the brake pedal suspended form the valve. The Kws have them on the floor. You have alot less leverage on a Kw. So to get the same air pressure at the chambers you need more pressure with your foot. Now that I think about it my driver, who drives a Volvo, complains of that when he drives my truck. But if he is in a day or two he doesnt say any more about it.

 

LOL I was just going to ask him if the star car had hung pedals or floor mounted. But I didn't want to sound like a smart ###.

 

Years ago, I drove an old Bud Meyer T6 that wouldn't stop for anything bobtail. Learn something new everyday.

 

I have always noticed this same problem, but it was never brand specific, I have never had a truck that has ABS stop well without a trailer on.

 

I was just going to add that if the linings have been replaced recently, they may have went with a cheaper lining. There are different levels of aggresiveness of the brake linings.