"Then Jake Brake is now in its 60th year of service, with more than 9 million of the engine compression systems made. Its history goes back 90 years though, to a place where a mountain, a train and titan of trucking all converged." - John Hitch, Fleet Owner
"Until now, hydraulic valve lash adjusters could not be used in heavy-duty diesel engines in combination with an additional engine brake, as the engine brake causes significant valve lash during the braking process. The hydraulic compensation elements automatically readjust to take up this play, thereby preventing correct seating at the end of the cycle.