JAKE ADJUSTMENT ON ISX

[Minich Truck Repair]

(06-28-2019 )Rawze Wrote:  

(06-27-2019 )Minich Truck Repair Wrote:  looking for some insight or help.
back story just did an in frame on it new pistons, liners, bearings, loaded reman head (after market) got it put together and head set put the cams and rockers etc.. on. wedge and pin it for timing and start setting the over head. i can get the intake and exhaust valves adjusted just fine, when you go to the jakes you can not adjust them. back the adjuster screw all the way out and can not get the 7mm gauge in to adjust them. any thoughts or suggestions? i'm at a loss have done many in frames on these and heads and adjustments this is the first problem i've had out of one.

It sounds maybe to me like the engine was pinned in the wrong slot/place on the crank when building it,.. or one of the cams has slipped,.. or you are not aligned with the correct cylinder when adjusting the valves.

What is the detent clearance measuring with a dial indicator between the top of the valve(s) and the engine brake rocker detent position?

...

I am here to learn and and get criticism all at the same time, this is the first one we have used an aftermarket head on. and after this it will be the last time we use an aftermarket head. always have used OE cummins overhaul kits and parts, customer wanted a cheaper route and we gave in to him. I will get some measurements and get back with you, like i said i am more than willing to learn and get information.