How to stay out of the breaks going down hill??
Registered User
Joined: Nov 2011
Posts: 4,479
Likes: 211
From: Isanti, MN
When you're climbing the mountain, you're storing kinetic energy in your rig. When you go down hill, that energy is released. You have to convert it to heat.
What an exhaust brake does is make the engine an air compressor, using up that energy and discharging it as heat in the exhaust and in the cooling water. It enables you to go downhill faster, in a higher gear, under control, and without using your service brakes.
You can then usually run safely with the 4 wheelers and have cool brakes if you need them in an emergency.
What an exhaust brake does is make the engine an air compressor, using up that energy and discharging it as heat in the exhaust and in the cooling water. It enables you to go downhill faster, in a higher gear, under control, and without using your service brakes.
You can then usually run safely with the 4 wheelers and have cool brakes if you need them in an emergency.
Registered User
Joined: Feb 2006
Posts: 2,280
Likes: 10
From: Udaho
Granted my trailer doesn't weigh as much as yours but yeah, big difference between my old 3rd gen and my new 4th gen with the exhaust brake and tow/haul! Rarely ever use the brake pedal anymore, just when I have to come to a full stop. Brakes should last forever on the new truck, the lasted 100k on my '03.
Registered User
Joined: Sep 2007
Posts: 141
Likes: 1
From: Southeast Iowa
Really like my Pacbrake, too. Our 5er is around 13k loaded and it works really well on steep downgrades, especially when combining it with tow/haul. Even on the lesser grades you have to learn how to use the exhaust brake in order t minimize use of the service brakes. Mainly just remember to get out of the throttle earlier to allow the Pacbrake to do its job (the Pacbrake activates as soon as the throttle is released [with an auto tranny] and holds until the motor gets below 1000 rpm). Bought mine here from Larry a few years ago.
Registered User
Joined: Dec 2011
Posts: 54
Likes: 0
From: SW Washington State
My 2010 has an exhaust brake, I am pretty new to this truck and camper combo. I did find the exhaust brake worked better if I go to a lower gear than OD (6th).
What do you folks recommend? I go over mount Hood and there are parts posted at 6% for about 3 mile stretches.
What do you folks recommend? I go over mount Hood and there are parts posted at 6% for about 3 mile stretches.
Registered User
Joined: Nov 2010
Posts: 2,205
Likes: 9
From: Lloydminster SK/AB
When you're climbing the mountain, you're storing kinetic energy in your rig. When you go down hill, that energy is released. You have to convert it to heat.
What an exhaust brake does is make the engine an air compressor, using up that energy and discharging it as heat in the exhaust and in the cooling water. It enables you to go downhill faster, in a higher gear, under control, and without using your service brakes.
You can then usually run safely with the 4 wheelers and have cool brakes if you need them in an emergency.
What an exhaust brake does is make the engine an air compressor, using up that energy and discharging it as heat in the exhaust and in the cooling water. It enables you to go downhill faster, in a higher gear, under control, and without using your service brakes.
You can then usually run safely with the 4 wheelers and have cool brakes if you need them in an emergency.
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