Birken Vogt
Charter Member
Again, there could be options. If it is a 2006 build engine (pre-DPF) the only brake available is an exhaust (butterfly) brake, better than nothing but not very effective and you have to run the engine at or above high idle for max effect. Yes it is allowed to run the engine somewhat above high idle with the brake on, I read it in the manual back when these engines were a current product. Not saying it is a good idea.
If it is the DPF model, there are two options. One is some sort of computer programming that clamps the turbine nozzle down which behaves similar to an exhaust brake but I have never operated one. The better option is a product actually made by Jacobs that is the same kind of exhaust valve based brake as found on big motors, and it works in conjunction with the computer and the turbine nozzle and is very effective, down to 1500 and below even.
If it is the DPF model, there are two options. One is some sort of computer programming that clamps the turbine nozzle down which behaves similar to an exhaust brake but I have never operated one. The better option is a product actually made by Jacobs that is the same kind of exhaust valve based brake as found on big motors, and it works in conjunction with the computer and the turbine nozzle and is very effective, down to 1500 and below even.
