This forum is full of sharp mechanics with a scope of ability from A to Z. Plus I'm not the only one on here that knows these old critter Cummins engines guys like RZucker, DMiller, Petepilot, kshansen, Junkyard and funwithfuel just to name a few that can help Just figure it as a learning experience, we all make mistakes. You might have to use some sand paper to find those marks on the pulley.ĭon't feel like the lone ranger for setting the overheads wrong, I guarantee you it's happened thousands of times. Letter stamped it will show that cylinder also.

Order stamped on the after cooler, the 153624 firing order will correspond with the A,B,C marks on the accessory drive pulley-plus it will be stamped 1-6 next to the A mark and so on for each Yes on small cam engines like 220, 335 and 350's you set both the valves and injector on each cylinder at the same time. The other unitized model with no plunger spring showing is aīig Cam Top Stop Injector. You can’t have a reliable high performance diesel engine without this extra attention to detail.Below are two photos of the 855 injectors, The one with the exposed actuator/plunger spring is a small cam injector. They are then tested, checked for leaks, and calibrated to match flow. If the customer wants to keep their original set of injectors, we can perform what we call a “clean and check” where they are disassembled, cleaned, and reassembled with new O-rings. Now the owner-operator has a blueprinted set of injectors all match flowed. First we do the leakage test to check the barrel and plunger tolerance, check the plunger to injector cup for leakage and seating, and then the recalibration to increase the flow for more horsepower, and then adjust the top stop setting. Our new injectors are from Cummins ReCon. For injectors, we like to setup and blueprint every set of new injectors. We work with the customer to pick the best code for each application and set it up according to their needs. There are thousands of pump codes for different horsepower and torque curves. It then goes on the pump stand to be tested. We then reassemble the pump with new springs, gaskets, seals, and O-rings. With the pumps we start off by disassembling them, cleaning, and replacing all worn parts. Many ask us what all goes into rebuilding fuel pumps and injectors.

350 big cam cummins