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AERA Weekly Technical Bulletins – October 12, 2020



Specifications to Machine Reaction Faces of Flywheel Assemblies on Caterpillar C9-C32 Engines


The AERA Technical Committee offers the following information on machining the reaction faces of the flywheel assemblies on Caterpillar C9-C32 Engines. This information should be considered anytime clutch of flywheel work is being done.


Reaction faces of flywheels on C9 through C32 engines can become damaged through normal wear and / or clutch damage. If the damage is light, the flywheel can be used again after the reaction face is measured, and if necessary, machined according to the specifications given in this guideline. If the damage is heavy and machining will not remove the damage, the flywheel cannot be used again.




Liner Shim Caution for Detroit Diesel DD13-16 Diesel Engines


The AERA Technical Committee offers the following information regarding the use of liner shims for 2008-2020 Detroit Diesel DD13-DD16 diesel engines. This information should be considered anytime the cylinder head has been removed and cylinder block work is done.


There have been reports of remanufactured engines using liner shims on these engines. If that is observed during engine disassembly, correct identification and installation of shims will be required during reassembly.




Case NH Autonomous Tractor




Case New Holland is throwing its hat in the autonomous tractor ring joining the ranks alongside rival John Deere and others. The company has a long history of adding technology to its popular

agriculture products to both increase efficiency and reduce the manual work load of the operator. New Holland, along with International Harvester, were incorporated into the Case Global

Brand (CNH) back in the late 1990s and have utilized various upgrades from the Case library of research ever since.


Case New Holland (CNH) and Case International Harvester (Case IH) began its autonomous technology pilot program back in 2016 to gauge viability and customer interest. The company that developed the technology, Autonomous Solutions Incorporated, out of Utah, partnered with Case New Holland as well as Case International Harvester to develop smart computer controlled systems for all of Case’s product line.




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