John Deere Tech!!!
Friday, April 14, 2017
Kollin and Nathan 12.5L
Kollin and Nathan got to use the new jib crane this year for their 12.5L. They verified their wiring harness and used the Picoscope to determine the settings for the pulse width modulated throttle. It had a bit of a miss when it first started so they also got to practice their diagnostic skills as well.
Logan and Nolan 6068
Logan and Nolan did the 6068 combine engine. This is a Tier 3 four-valve engine with quite a collection of electronic components. The harness for this one came with some pre-installed electrical issues from last year so they also got several hours of schematic training.
Lucas and Corey 9.0L
Lucas and Corey had the first 9.0L to run. They also took on a wiring harness challenge. They used an engine harness and built a harness to connect the engine controller and the armrest controller. After several days of wiring schematics and more wire connectors they got it to run.
I'm sure that connector is in there somewhere!
John Deere Tech!!
Marcus 4045
Marcus got an engine that we tore down for the first time this year. We have a pair of these on one crate and that is a good thing. He needed to combine parts from 2 of them and clean up a crankshaft to get one to work. It had been setting for several years and it had some new parts in it. We thought that we were going to have to take his injection pump apart but we got lucky. He borrowed a turbo to run it because everyone needs a turbo.
:)
John Deere Tech!!
John Deere Tech!!
Nathan and Chris 7.6L
Chris and Nathan had the famous "666" engine this year. The crankshaft is actually straightening itself. It only has about .006" bend these days. It sounds great as always but it seems to have developed an unusual noise as it is shut off this year???
John Deere Tech!!!
Greg and Alex 8.1L
Greg and Alex rebuilt the 8.1L with the electronically controlled "P" pump. They verified the wiring harness and repaired it before they started it.
John Deere Tech!!
Eric and Luke 8.1L HPCR
Eric and Luke may have had the first engine running this year but they were challenged to build a wiring harness. We ordered some connectors, got down the pallet of wiring harnesses and they went to work. After a couple stressful days they were successful. Never mind that little knocking noise in the back ground its just a little help from a little classmate that needs a little attention.
John Deere Tech!!
Mitch 4045
Mitch tore down an engine that needed a little repair. It had a broken injection pump aneroid and rod bearings that were nearly spun. We installed a different injection pump that had the pumping plungers stuck. Don't let the hammer show fool you though because we had to disassemble the pump and use lacquer thinner and the hammer to free the plungers.
John Deere Tech!!
Blake And Austin 8.1L HPCR
Blake and Austin were the first to run this year with this 8.1L HPCR. They had a little issue with a "sticky" injector but that gave them an opportunity to diagnose the problem. A little heat from a lighter on the coolant temp sensor and we were able to complete the Interactive Tests with Service ADVISOR 5 to pinpoint the problem.
John Deere Tech!!!
John Deere Tech!!!
Wednesday, March 1, 2017
Engine Class 2017
We have engines out of the rack and in many pieces. Cleaning and measuring is keeping everyone entertained. We have 4.5L, 7.6L, 8.1L, 9.0L, 10.5L, 12.5L and 13.5L engines apart this year eighteen in all. Here are some pictures.
John Deere Tech!
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