Recent content by Christos

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    Need help! Maxjax Pump Replacement or Fix.

    Here is what I ordered on Amazon: https://www.amazon.com/dp/B0CCLM3CZV/?tag=atomicindus08-20 But that's not what I got. I received a valve that was black and different shape, see picture. It worked, but the handle no longer fit properly on the pump body because of the longer valve. It can...
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    Need help! Maxjax Pump Replacement or Fix.

    Well, I got my Halloween present! First, I replaced both the lowering valve and the relief valve with a pair I bought on Amazon. Note that I bought a 72mm lowering valve, but the lift needs a 62mm valve (see picture in my previous post). Nevertheless, the 72mm valve worked, although the...
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    Need help! Maxjax Pump Replacement or Fix.

    I was finally able to investigate more. I currently suspect the release valve. When the lift is under load, I can hear a periodic "squirt" sound, which I believe is coming from the valve (I used a mechanic's stethoscope). I was able to remove the valve and inspect it (see picture), but could not...
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    Need help! Maxjax Pump Replacement or Fix.

    Thanks everyone, great discussion. I will disassemble the unit and see if I can fix it. As finn said, these things are not very complicated. I will report back in a week or two. FYI, I tried taking it to a tractor repair shop and they adjusted the check valve, charged me $100 and returned it to...
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    Need help! Maxjax Pump Replacement or Fix.

    You are assuming that finding the specs to compare is easy. I wish. Let me contribute some material. The first is a picture of the label on my power unit. Important numbers: Wuxi Deli Hydraulics Co. www.wx-dl.com P/N: YBZ5-E0.8B 8F 1/AMQOT4 Pressure: 1920 psi Tank: 1.56 GAL RPM: 3450 The...
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    Need help! Maxjax Pump Replacement or Fix.

    Which one? Some Chinese power units are under $200, Bendpak seem to be over $600.
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    Need help! Maxjax Pump Replacement or Fix.

    Perhaps you are right. I tried talking to them three years ago when I first installed the lift (long story, different house and a move during COVID), but all they would say was that I was not the original owner and warranty does not apply and wanted to sell me a new motor/pump assembly for $500...
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    Need help! Maxjax Pump Replacement or Fix.

    Resurrecting an old thread, but I have the same question. I bought an older MaxJax new, installed it, and it is not able to lift cars. It lifted my old VW Jetta, which weighs very little, but anything heavier would not lift. I suspect a problem with the pump. I did bleed the cylinders many, many...
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    MaxJack alternative power units?

    Thanks guys, I will start taking things apart and see what I find. I will check for foaming first in case there is a leak or a crack in the pickup tube. Then I will go into the pump itself. Correct me if I am wrong, but the fact that the noise from the motor does not change under load tells me...
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    MaxJack alternative power units?

    That's exactly what they did. They set the relief valve for max pressure, but it was still well below the operating pressure for the unit. This was without opening the unit for further examination/repairs. At $100/hour they correctly said the repair may easily exceed the price of a new unit and...
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    MaxJack alternative power units?

    I can certainly relate to your Danmar customer experience. Some customer representatives were more helpful than others, but at the end they would not do anything for me either. Which unit did you buy from Harbor Freight? it appears they are not selling any hydraulic power units anymore. Chris.
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    MaxJack alternative power units?

    Thanks to everyone who replied! Here is some more information. Initially, the lift would not raise the car (a '94 Altima, weighing about half of the lift's rating of 6,000 lbs) mor ethan a few inches from the ground. Without a car, the arms would rise all the way to the top, which allowed me to...
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    MaxJack alternative power units?

    Hi MaxJack owners, Has anyone used a different power unit on the lift? I bought my lift from someone who had stored and never used it. After I installed it the power unit seems defective, it does not produce enough pressure to lift. The lift is out of warranty and the company will not do...
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