It seems that the problem is that if the jack is lying on its side, and the release lever is depressed, it can leak hydraulic fluid. So it sounds like both things need to happen to get a leak: (1) jack on its side, (2) release lever is depressed.
Here is the storage information from page 8 of the ARB manual for the jack:
View attachment 7800525
Here is a link to the manual:
https://www.manualslib.com/manual/1982590/Arb-Jack.html?page=8#manual
Here is a review of the jack, and he discusses storage of the jack starting at 9:10
And here is a review of the jack from someone on Expedition Portal, who opened the shipping box to find that the new ARB jack that he had purchased had leaked during shipping:
Christmas came a few days early this year when my new ARB Jack came in the mail. Since first reading about ARB’s new Jack and all of it’s benefits compared to the competition I could not wait to get my hands on it and put it to work. I thought about all different places I could mount it on the...
expeditionportal.com
Thanks! I’m familiar with the manual and the jack, I own one. I appreciate the citations, that’s most helpful.
I was puzzling about the claim that ARB recommends vertical storage and spoke to ARB HQ before purchasing.
They insisted that they do not, and have not ever, instructed owners to store in a vertical position - I note they are stored on their side awaiting sale at my local ARB outlet.
That’s HQ however the message may have arisen in the provinces, for legitimate reasons.
The concern seems prevalent on US forums so I wonder if ARB USA was the source, hence my question.
Having not yet taken it on an expedition I can’t attest to field durability but it’s a very nice bit of kit in the hand.
It clearly sacrifices durability for reduced weight when compared to a farm jack, which as we know will survive an apocalypse.
I know a few others who have had several years of ownership/use however and have the sort of enthusiasm one might have after spending that much on a jack.
That last customer appears to have received a DoA product. Not sure why he didn’t return immediately under warranty.
nb. Pressure Relief Button warning was mentioned by ARB, with the solution being to use the carry bag and be mindful stacking on top of it.
