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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

690B swing gearbox lube

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j schlosser

04-28-2007 17:31:13




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On my 690B excavator, there is a swing gearbox below the hydraulic (swing) motor. The manual calls for 80-90W gear oil in this gearbox. However, due to the age of the machine, I think the seal in this gearbox is leaking out the 80-90W oil, and it drains down to the main swing gear (which is supposed to run in texclad grease.) The swing works fine. Would it work to use a heavier lube in the swing gearbox that is not as liquid as the 80-90W, and would not leak past the seal as quickly?

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Roy Suomi

04-29-2007 18:43:03




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 Re: 690B swing gearbox lube in reply to j schlosser, 04-28-2007 17:31:13  
Sure , anything is better than nothing....Someday you will have to rebuild it or pedal it.. I;ve made a slurry of grease and gearlube with a power paint stirrer for the "57 Gallion grader at work....



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