Minuteman III Motor-Generator Bearing Grease Replacement
Final rept. 5 Jun 2012-11 Jul 2013
ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
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The study was initiated to developfind a lubricating grease s and preserve oil to replace Texaco Multifak AFB2 grease and Capella WF-68 oil currently used in the MINUTEMAN III Motor-generator M-G Bearing Systems. Due to the unavailability of the Multifak AFB2 grease, Hill AFB is currently seeking its replacement. As a part of the test plan, nine lubricating greases and five preservative oils used in the current military and commercial bearing applications were evaluated in a comprehensive series of laboratory tests. The evaluation included compatibility test to ensure the replacement products can be mixed, in the bearing, with the currently used products, i.e., Multifak AFB2 grease and Capella WF-68 oil. To certify the candidate grease selected from the laboratory evaluation, the grease was evaluated in the actual M-G systems as the final performance indicator. The test results showed that MIL-PRF-10924H grease was chemically compatible with Multifak AFB2 grease and its lubrication performance is equal or better than those of Multifak AFB2 grease. Therefore, TARDEC recommended MIL-PRF-10924H grease as a replacement of Multifak AFB2 grease. In addition, MIL-PRF-6085 preservative oil and MIL-PRF-680 Type II solvent were also recommended to replace Capella WF-68 oil and Isopropyl alcohol currently used to clean and preserve stored bearings.
- Lubricants and Hydraulic Fluids