CharlesinGA
Senior Member
The exhaust brake works by turning the engine into an air pump trying the pressurize the exhaust manifold and turbo, with very little escaping. (Cummins allows up to 60 psi on most engines) The Jake brake builds the compression in the cylinder, and releases it at the top of the piston stroke, so that same pressure is not pushing the piston back down. It is more effective, to a degree, than an exhaust brake, but at much greater expense. Newer ones are selective, allowing for two, four or six cylinders to provide braking while the others simply go up and down normally.Hey occer,
I'll check it out this weekend on our first trip out in the new rig. I'll let you know what I find. It's kinda sort of like a jake brake system in the big rigs. I traveled many miles through the Ozarks hauling for McDonalds, but they never outfitted our equipment with Jake-brakes. Just use your commend since and skills to pull you through. Those were the days and with millions of miles behind me now, all accident free. I treat all road trips the same as the first, anything can happen.
Occer thanks for shareing, I will check this out, it is a great feature to have and it saves a lot of wear and tear on the brake system, which equates into $ savings
Cheer to ya..........and Happy Trails .......... Jack
Interesting fact, the Jake brake was invented by Clessie Cummins after he had left the Cummins corporation (1950's). He had Jacobs Corporation make the prototype compression brake and proved out the idea, and attempted to sell it to the Cummins corporation, who saw no future in it, so he sold the rights to Jacobs and the Jake Brake was born! I'm sure that by the late 1960's Cummins Corp was kicking themselves for not buying the rights to the design.
Charles