Engine Lift Hydraulics


Old 03-09-07, 03:19 PM
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Engine Lift Hydraulics

I had a leak in my engine lift ram, and fixed the "O" ring that was leaking around the small plunger. Since the leak let quite a bit of Fluid out before I got to it, I figured that was the reason that the ram was not operating smoothly after the new ring was installed. I removed the small plug in the side of the ram, and some air escaped, but I still think I should add some fluid back to the system. Will power steering fluid work in this application, if not what can I buy in a small amount to do this job. This ram is a Harbor Freight lift, probably made in Taiwan. Dont shoot me, it was a gift.
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Old 03-09-07, 03:43 PM
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You really need to try to find out exactly what fluid is already in it; not all fluids are compatible. It's quite possible what you have in there is ATF fluid; that's what runs in the hydraulic system of my wrecker.
Old 03-09-07, 04:20 PM
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You can buy little bottles of hydraulic jack oil [fluid] I think they come in pints or quarts. I think it is the same as the 2 gallon jugs of hydraulic fluid I buy for my tractor - at least I've used it one of my bottle jacks with no problem.

Probably best to find out fro sure. I haven't called in a long time but the tech reps for HF used to be quite helpfull.
Old 03-09-07, 06:36 PM
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If it is clear it is hydraulic jack oil. If it is red it is ATF as Tow Guy stated. Let the jack all the way down before filling it. Fill it, re-install the plug and run the ram up and down a few times. Re-check the oil. It should be good, but just in case there was some air trapped in there.
Hope this is helpful to ya,
Old 03-09-07, 07:17 PM
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Hydraulic Jack Oil

I poured some out on a white bench, and it sure looks green to me. Any clues on THAT color?
Im the original owner, so its what was in it from the factory...

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