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Believe me, I don't get under anything unless there are redundant devices for safety. I always cringe when I see people walking underneath the bucket of a backhoe, or other device that is held up by hydraulics. If a hose ruptures, said bucket immediately drops.
I have short pieces of 8x8's, 10 ton jackstands, 6 ton jackstands and regular jackstands.
Please note, Quickjack instructions instruct you to place jack stands under car after lifting. Quickjack alone is not a "safe" way to work on the car.
My instructions never said that and neither did the QuickJack tech department back when I purchased them directly from QuickJack/Ranger in 2015!
Mine have a beefy metal bar on each side that I have to manually pivot down into a pocket that will not allow the jacks to collapse.
I believe the newer jacks have this bar as well but they now automatically click into place as you raise the jacks.
Did they make the new ones cheaper?
The instructions on their website has it in the "Safety section"
• Make sure both Lock Bars are engaged before nearing an elevated Vehicle. • As an added precaution, you must always use auxiliary safety stands under the Vehicle while elevated on both QuickJack Frames.
I actually went ahead and found my instructions from 2015. It says absolutely nothing about using additional jack stands to supplement the QuickJacks.
So I wonder if they have changed something with the newer jacks?
I actually went ahead and found my instructions from 2015. It says absolutely nothing about using additional jack stands to supplement the QuickJacks.
So I wonder if they have changed something with the newer jacks?
If yours is different, it could be before the failed Quickjack happened (joking, don't know if there was a failure but something may have happened, Lawyers?). Following are 2 photos. One has the warning to use auxiliary jack stands attached to my TL7000 Quickjack. The second is virtually the same warning on page 34 of my manual.
Sticker on Quickjack. See top of second column of the English warning Quickjack manual, page 34, Operation section. See second warning up from page number
It is kind of funny (not in a good way) that they recommend the jack stands with the Quick Jacks.
I mean if I am going to pull out my jack stands (I know it is only two stands) what is the point of using the QuickJacks?
I may have had second thoughts on purchasing them back then if using jack stands with the QuickJacks was necessary.
I've had mine for years. Once car is up I make sure locks are engaged. I've spent hours under the car that way. Once car is fully up, you let it down until the locks are fully engaged. IF that failed, you still would have to have a hydraulic failure for it to leak down....believe me I'm a very safe person, but there is no way this could fall on you. However, i do have a stand in the front and rear in case karma decides to stop by....
It is kind of funny (not in a good way) that they recommend the jack stands with the Quick Jacks.
I mean if I am going to pull out my jack stands (I know it is only two stands) what is the point of using the QuickJacks?
I may have had second thoughts on purchasing them back then if using jack stands with the QuickJacks was necessary.
I discovered this only after my purchase. Had I known it required the stands, I would not have made the purchase. Placing the stands are a real pain as the resting height of the locking arms is usually between "step notches" of the stands. Makes placing the stands a bit of a guess.
I've spent plenty of time under my Escalade ESV with the quick jacks, and no other support, other than the locking bar. It's what the locking bar is designed for. I don't see how the quick jack could fail if the locking bar is pressed against the stop firmly. Even if the hydraulics failed, the bar would hold the vehicle up.
I would never adjust the height of the quick jack with myself or someone under the car. And I give the vehicle a little shake to make sure everything is firmly seated on the jack.
Having an added measure of safety isn't a bad thing though.
I have to say that I have been under my car for many hours at a time; two clutch replacements, oil pan gasket, headers, exhaust installs, RideTech coilover install, regular maintenance.
I have always felt comfortable beneath the car with the QuickJacks, more so than with the 6-ton jack stands I used to use. My car also sits raised on the QuickJacks in the winter months without any problems.
I just can't see how these QuickJacks could collapse if the lock bar is in place. I know that you can never be too careful working under a lifted vehicle but like everyone has said it is probably a legal deterrent that has them recommending that jack stands be placed under the QuickJacks.