Exhaust brake quit working
Lets try this again! Need some help. Cummins 400 isl, spartan chasis 2006 travel supreme. I guess next will be taking it to a tech!
Forum Discussion
First, do you have an EXHAUST BRAKE (external to the engine) OR an engine compression brake (internal to the engine)?
If exhaust brake, what brand?
The Cummins ISL could be ordered either way, with the exhaust brake being less $$$.
When you turn on the brake and close the throttle, does the Allison shift pad change from "6" to whatever your pre-select gear is (often 2nd or 4th)? That is the first step in brake activation.
If exhaust brake, what brand?
The Cummins ISL could be ordered either way, with the exhaust brake being less $$$.
When you turn on the brake and close the throttle, does the Allison shift pad change from "6" to whatever your pre-select gear is (often 2nd or 4th)? That is the first step in brake activation.
