Full de-mandate on a 15 litre Cummins

[Fleetman13]

(05-01-2025 )Rawze Wrote:  ,,,
That 'cummins school training' is a curse, not a blessing. It is that complete garbage 'official training' crap that is the whole problem, and has been for years now.

(With regard to CPL)...
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I’m not saying that cummin training isn’t a crock of shi#t. They’re in the business to make money. I am by no means “brainwashed” on what they sell I have a mind of my own and am well aware of how Cummins tells you to do their procedures. It’s nice to mainly be able to use quick serve to look up part number and being able to have the service manual available for every ESN built by Cummins for torque specs and so on. I will say if your new to the diesel world Cummins training will help you with the basics but as a mechanic you have to have a mind of your own and realize that a lot of these diagnostic trees while having hit and miss info can give you somewhat of an idea on how a component works if your completely clueless, for example a DEF injector is supposed to dose out .3 of a gallon of DEF an hour or at least on a 6.7 some stuff is helpful but if they told you how all their stuff worked then they’d make next to no money on their parts because it would keep people from slamming a DPF on one ever so often when in reality there’s a very good chance you have sooted up EGR ports. With enough experience you can drive one and tell if the EGR ports are stopped up cause there is a sluggish feeling to the engine or it will regen every 3 engine hours that’s where having the ability to look at advanced ECM data will separate experience from anything else.