J & S Jack Problem
Seasoned HDF Member
Joined: Feb 2016
Posts: 8,001
Likes: 6,905
From: NC
Are there any manufacturer numbers to identify this air jack? I already have the J&S jack and the air seems like a nice upgrade. Apparently, the "Strongway 5-ton air/hydraulic bottle jack " is not longer available. Looking via google initially only shows 20t versions now.
Last edited by Goose_NC; May 6, 2026 at 10:05 AM.
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Cruiser
Joined: Apr 2020
Posts: 112
Likes: 57
From: Illinois
Are there any manufacturer numbers to identify this air jack? I already have the J&S jack and the air seems like a nice upgrade. Apparently, the "Strongway 5-ton air/hydraulic bottle jack " is not longer available. Looking via google initially only shows 20t versions now.
Actually this one looks similar to the one I have. Not sure if it has the same vertical release which is really nice to have.
https://www.google.com/aclk?sa=L&ai=...BAgJEDE&adurl=
Last edited by TimP 117; May 6, 2026 at 04:59 PM.
Road Master
Joined: Mar 2013
Posts: 877
Likes: 2,185
From: Wisconsin
Rob..the second lowest setting..with the cross bar underneath the slots. Again, I’ve used it a lot, but I’m always suspicious of the mechanical stops being partially blocked by the cross brace underneath.
Road Warrior
Joined: Dec 2016
Posts: 1,845
Likes: 938
From: Lincolnshire, IL
I can't picture what you're referring to when you wrote: "with the cross bar underneath the slots".. My J&S has two safety locks, one on each side. There are 5 "holes" or stop positions for each safety lever to lock into. That's basically it.
I will say that the J&S's design moves the cycle's full weight directly over center as it raises higher. So the higher you raise it up the MORE stable the jack is, especially IF you plan on moving it around under load. (I always raise it up to either the highest or second highest position for safe maneuvering around my garage.)
I will say that the J&S's design moves the cycle's full weight directly over center as it raises higher. So the higher you raise it up the MORE stable the jack is, especially IF you plan on moving it around under load. (I always raise it up to either the highest or second highest position for safe maneuvering around my garage.)
Last edited by Rob175; May 7, 2026 at 10:22 AM.
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Road Warrior
Joined: Dec 2016
Posts: 1,845
Likes: 938
From: Lincolnshire, IL
THANKS for the picture....now I know what you're referring to.
Mine is exactly the same as your pictures show. Although I typically don't leave it stopped in that #2 hole position, I don't see a safety issue IF you prefer to leave it there. If, you check underneath one of the holes to see how much of the "safety stop bar" protrudes when placed in one of those hole positions, I think you'll agree that only a fraction of the safety bars protrudes below the hole.....and the cross bar is welded far enough below the holes to allow the bar to lock...same as it does in the other holes.
As I mentioned before, The BEST position for maximum stability is the highest or second highest lift position. The jack's design moves the weight up and over center the higher the lift raises up. So, I strongly suggest you use one of the two highest lift positions all the time. Other than that, bleed the system (yearly) ...but also shoot some grease in the grease fittings on all of the wheels.
Thanks again for the pics.....
Mine is exactly the same as your pictures show. Although I typically don't leave it stopped in that #2 hole position, I don't see a safety issue IF you prefer to leave it there. If, you check underneath one of the holes to see how much of the "safety stop bar" protrudes when placed in one of those hole positions, I think you'll agree that only a fraction of the safety bars protrudes below the hole.....and the cross bar is welded far enough below the holes to allow the bar to lock...same as it does in the other holes.
As I mentioned before, The BEST position for maximum stability is the highest or second highest lift position. The jack's design moves the weight up and over center the higher the lift raises up. So, I strongly suggest you use one of the two highest lift positions all the time. Other than that, bleed the system (yearly) ...but also shoot some grease in the grease fittings on all of the wheels.
Thanks again for the pics.....
Last edited by Rob175; May 8, 2026 at 10:42 AM.
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