Forgot your password?
Or sign in with one of these services
Trouble Shooting Guide for Jacobs Brake.
Posted March 31, 2015
I have a 2002 e7 350 in a log truck. This truck did not have a jake ,so we put a factory jake on . From day one when you put the jake on hi it hitches and jurks the hole drive train. We took it back to dealer and all they could see was valves needed adjustment. That didn't help. Any ideas???
Posted April 23, 2016
How much horse power is the engine putting out.? Because jake brake work by releasing engine compression. Using the engine as a brake. So this in mine the system you have my be at fault.
You need to be a member in order to leave a comment
Sign up for a new account in our community. It's easy!
Already have an account? Sign in here.
...The world's best antique, classic & modern Mack Truck support forum! Founded in 2000, BigMackTrucks.com is the place to go for everything related to Mack Trucks!
BigMackTrucks.com is owned and operated by Watt's Truck Center, New Alexandria, PA. This forum and it's contents are not affiliated with Mack Trucks, Inc. or Volvo Trucks North America.