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MGT-01-008H: The Grease Thief Helicopter Sampling Kit contains eight (8) sampling sleeves that each contain: 1 Grease Thief Type 1 sampler, 1 spatula, 1 two-part GT Injector, and one shipping tube with label.
The Grease Thief™ sample fittings are used to obtain representative and repeatable samples from greased components found in helicopter drivetrains. This kit was designed specifically for Boeing to support a sampling program for the H-47 Chinook fleet, and is capable of representatively sampling the swashplates, hanger bearings and drive splines with minimal sample loss and effective quantitative transfer to the sampler.
Each sleeve includes a spatula to first scrape away dirty grease with the broader spoon-end, then the other narrow end is used to obtain 1 gram or more of representative grease. This is then loaded into the opened GT injector cup, and the GT Injector plunger is inserted. The Grease Thief is screwed into the GT Injector thread, and the grease is then extruded by depressing the plunger into the GT Injector cup. Once the Grease Thief® is filled, it is then capped to engage the taper of the threads. The filled Grease Thief® is then placed into the shipping tube and the barcode label is affixed to the tube.
Posted by Michael Barnes, PM, H47 Lubrication Optimization Study on 2nd Feb 2024
When formerly employed with Boeing, now retired, I had engaged Rich and his team to allow Chinook operators to use the "grease thief" to capture grease from many rotor, drive and other grease point locations ( shaft splines, rotor head, bearings, etc) on the Chinook Helicopter at defined maintenance intervals. A carefully constructed sampling program used the GreaseThief to capture grease. We sought to to study and re-establish more precise intervals based on our sampling program where wearout/degradation over time was assessed. This was one of our last projects to fully redefine and substantiate through a tribology study (chemical analysis ) the helicopters scheduled maintenance program lube intervals. Led to reduced maintenance time especially for invasive tasks requiring significant disassembly/reassembly. The kit now has enhancements for grease capture, transfer, containment, instructions and labeling all aimed to improved quality controls to shipment time, identification and purity of sampling.