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Truck Repair/CAT3406B


had a miss was no.1 replaced injector still missing after several times trying to time it noticed the lifter not following cam downward have push it down is this common or does it need replacing also if so how

Is That the rocker for #1 that you replaced? Thats definetly not right the injector spring should keep that rocker in contact with the cam at all times. Would turn it around to where its not in contact with the cam and see if the injector spring has come up to the top of its stroke there has to be something binding up. Weather the injector is coming back up to keep it in contact with the spring or the raocker is sticking on the shaft. But with the missing and the rocker not in contact with the cam i would have to say there is a spring broken in the injector.  

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Jeff Drumm


I Can answer any question pertaining to semi trucks and trailers. Have no experience in the automotive field so not able to help in that area.


My experiences in Semi Trucks is. I own my own truck and i presntly maintain a 80 truck fleet. Can handle any questions pertaining to a truck have tore apart and rebuilt every aspect on them. Fleet I deal with is Mainly Volvo trucks and a handful of freightliners. Work on automated transmissions on a daily basis along with carrier apu's. With engines my specialty is the 60 series Detroit but do work on the cummins isx the n-14 and the ism. and also the Volvo engines.

Have a College Degree from university of northwestern ohio in diesel and agriculture mechanics. Have 10 years behind the wheel driving a truck and 4 years working on trucks full time. Also have grown up on a farm so have been tinkering on trucks and tractors all my life.

Awards and Honors
I've gone through online schooling and have received certificates from webb wheel, Timken and Volvo academy.

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