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Old 06-05-2003, 08:05 PM
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Post Hydraulic Jack has stopped working??

I have a 1 ton shop crane that is used to pull engines. This is the type where the two legs roll under the engine, the top comes down with a hook, and a heavy duty long ram hydraulic jack lifts the motor out when you pump the handle. I bought this a year ago, pulled 3 engines, let it all the way down, stored it for a year and now it does not work. When you pump the handle, nothing happens. Anyone have a clue why this happened and how to fix it. There is no sign of fluid leak. Fluid level is OK. I have several other smaller hydraulic jacks I have had for 30 years and they all still work with no problem.
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Old 06-05-2003, 08:42 PM
akm akm is offline
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try lifting the lift arm and pumping. if it doesn't pump up you have a bad seal.
might try going to a hyd. shop to find a new one.
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Old 06-06-2003, 02:02 AM
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all thats in there is steel and orings. chances are that an o ring dried out, and ripped when you started pumping. this happens a lot in air nailers etc.ps . did you check the fluid level??its probably rings. mike
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Old 06-06-2003, 03:55 AM
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That happened to mine last year when I loaned it to a buddy and I had just used it the day before. It had a small weep and over the years(about 20) it had gotten so low it wouldn't pump. If you raise and lower the arm as suggested, you may find the level is down. That's all it took to get mine going again, I'll have to check it again in another 20
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