www.jbj.co.uk/drive-shafts.html Mechanical Power Transmission Yellow Jacket Drive Shafts 3 #DriveLineHarmony Run for onemonth - remove inserts and return to jbj Techniques for inspection If OK, run shaft for 2months - remove inserts and return to jbj Techniques for inspection If OK, run for 3months and return to jbj Techniques for inspection If you are running multiple drive lines of this type you will only need to pull one Yellow Jacket Shaft from service to inspect. That way you will only need to wait 1 more month to inspect the 2-month runtime, and so on. If you do not reach the replacement interval and you have inspected all Yellow Jacket Shafts wait an additional month and then inspect the first inspected shaft again. Repeat the original process until replacement schedule is determined. If OK, keep repeating this schedule, adding 1month each time, until you are told by jbj Techniques that you have reached the point of needing to replace inserts. Caution: At any time if your RPM will not hold constant during test, the inserts have prematurely worn. They will need to be removed and replaced immediately. Determining Replacement Schedule: Grease universal joints with a premium lithiumextreme pressure (EP) grease every 250 hours. Drive Insert Replacement Schedule: Rubber drive inserts will vary in life from application to application. When users install and start running the Yellow Jacket Drive Shaft they will need to follow a strict maintenance schedule. This schedule will ensure that the inserts will not degrade to the point where the drive lugs start driving metal to metal. Once the shaft starts drivingmetal tometal it will need to be replaced with a complete new shaft, it will not be able to be rebuilt. GreasingOf Universal Joints: The customer shall also determine a complete rebuild schedule. After drive shaft has run for 1 year, remove from dyno and inspect the universal joints and internal shaft bearings. If bearings have very little play you will be able to re-assemble shaft and continue to run. If you would like to replace the bearings while the shaft is disassembled you may do so, especially if you have other dynos running the same shaft setup. Run shaft for another year before repeating process. Once you notice the bearings getting worn (sloppy or not smooth running) you will want tomake note of the service time, and use that as your complete rebuild interval. Complete Rebuild Schedule: »Dampens vibration. »Easy installed maintenance for extended life. »Wide range of shaft configurations. Custom designs and lengths. »Dummy flywheel assemblies. »Production test stand approved. »Heavy duty. Rugged steel design. »Used on test stands worldwide.
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