Posted by V35B on January 02, 2022 at 05:31:00 from (143.55.59.123):
In Reply to: New engine failures posted by SVcummins on January 01, 2022 at 16:15:07:
You just never know what your getting. I cannot count the number of engines I have built over the years, and I will admit that some I did I am not proud of the way I did them. Those were the hurry up and get it back in service, it will be OK deals that the customer forced on me. With that being said, they all ran fine and did their time, those were all Cats, and all In-frames on 988 loaders and 777 and 773 haul trucks.
The thing I always saw people not do on engines was check the block for main journal alignment, and verify bearing clearance with new bearings. Some engines are more sensitive to this than others. It was always take the parts out of the box and slap them together. I came to the realization years ago to trust nobody and no parts, and check things on my own. Just this year my son was rebuilding a JD 404 of of his 4320, and put a new set of lifters in it. He just took them out of the package one by one and installed them. When he was adjusting valves, #4 intake was not able to be adjusted, it had too much play. Knowing the cam measured out correctly I had him pull the lifter, it looked right, but when we pulled the one next to it, we discovered that the one in question had the counterbore cut .070 deeper. I looked at every box that they came in, and they all showed the right part number.
Someone mentioned Cummins 15L.Cummins does a horrible job on their Re Mans, they re use too many parts that are in spec. I bought 6 ISX 15L engines to replace before failure on some of our Peterbilt heavy haul tractors. I had always gone with factory new replacements in the past, but trying to save a few thousand cost me, as all six of these went down at 12,000-14,000 hours with valve train failures. Cummins also does poorly with other aspects of the reman program, including the 50L engines as well.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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