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Concerns about operational difficulties with the ASTM D2882 Test Method and whether the Vickers 104C vane pump will be continued in production has prompted the need to develop a replacement test for the ASTM D2882 Test Method. ASTM Section D02.N.7 has been investigating for the last five years such a potential replacement test using the Vickers 20VQ5 vane pump. The goal is to develop a replacement test that uses a pump of current and expected future manufacture that will provide results consistent with results obtained previously using the D2882 Test Method. The initial study that was the basis for test development was originally published in May 1992 in the STLE publication, “Lubrication Engineering”. Since that time there has been an ongoing effort to complete a comparison using four (4) reference oils in nine (9) laboratories, including European participants. Difficulties and problems related to test operation and test cartridge preparation have occurred and are reviewed in this paper.
antiwear, hydraulic fluid, vane pump, pressure, galling, rippling, vane tip contours, vanes, cam ring, internal leakage, flow rate
Project engineer, The Lubrizol Crop., Wickliffe, OH
Manager, Fluids Laboratory, Vickers, Inc., Rochester Hills, MI