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Old 02-01-2014, 03:31 PM   #1
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Lippert Hydraulic Slide Pump Fluid?

I have a 2011 Forest River 40 foot 5th wheel with 4 slideouts and they are hydraulic. Can anyone tell me what type of fluid I should use in the hydraulic system? It is a Lippert hydraulic pump with a 2 quart tank... model number 643150. I know it is either transmission fluid or brake fluid but not sure which. I've looked everywhere for this info but can't find it anywhere. Any help would be appreciated.

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Old 02-01-2014, 03:40 PM   #2
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I have an '08 Challenger 5er by Keystone. I think it has the same pump. Mine takes ATF fluid.

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Old 02-01-2014, 03:43 PM   #3
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DexIII ATF. Basic, cheap stuff.
Be sure to check fluid level with ALL rams in. That includes, slides, and landing legs if they have rams.
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Old 02-01-2014, 05:28 PM   #4
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Brake fluid will ruin your exposed cylinder rods in no time. It can only be used in a totally enclosed system.
Power steering fluid similar.
So hydraulic transmission fluid is the way to go.
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Old 02-02-2014, 06:26 AM   #5
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Thanks for the info everyone.
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fluid, slide

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