What situation would satisfy you? Toss a perfectly good jack in a trash and buy another? Or hire a couple engineers to repair it and run some tests.
I get a feeling there is no satisfying you.
Unscrewed the "DO NOT ADJUST" port from HF Jack (2 tons) - help!
- Thread starter RandomUserOnInternet
- Start date
I get a feeling there is no satisfying you.
Big Bad Dad
Well-known member
I don't need you to satisfy me. I just remarked about how you are posting your guesses as good advice. You are not able to accurately know where you are setting the adjustment. What you say to do will probably work. Or maybe it won't. But you don't know for sure where you are setting the adjustment. It is just a guess. > "maybe one more turn"..... SO, exactly how much does that one more turn change the pressure setting? THAT is what I asked you. And you cannot answer.
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Well, your comment after I said to find something close to the limit of the jack, and set the relief so it does not lift it didn't satisfy you either, so that is why I wondered.
driftpin
Well-known member
I've already posted my view. Safety over economy (returning an unknown quantity to the workplace).
The discussions are stopping just short of hard feelings and I for one think this topic could be retired, until some other contentious issue arises in another thread. IBTL.
The discussions are stopping just short of hard feelings and I for one think this topic could be retired, until some other contentious issue arises in another thread. IBTL.
oldmachinenut
Well-known member
I have an opinion on this and I hope it doesn’t offend anyone. I don’t understand the need to ask others opinion on every little thing…. Then do the opposite or argue or keep asking till you get the answer you like. This is not aimed at the op, I think it happens on all websites. Maybe I am old school but I study the problem, form a plan of action and go for it. I am talking about the people that ask for opinions on everything they do. A good example is “what car, truck, armored personnel carrier should I buy” There are a lot of very decent, knowledgeable people on this site that give lots of great advise. Part of my reason for posting this is a lot the time threads turn into arguments. I am sorry to say I have regrettably participated in some of them.
I appreciate you all
I appreciate you all
JRC3
Well-known member
I call them "askholes." Again, not aimed at anything in this thread.
Years ago when I really kept fish, was very accomplished and gave lots of advice to newbs on forums as did other smart and accomplished fish keepers. I got fed-up with askholes ignoring proper suggestions and just picking and choosing things that fit their wants and needs and not the live creatures they chose to have. I'd just tell them, "There are many knowledgeable fish keepers on this forum willing to help and give great advice...The advice is free- What you choose to do with it gives it value."
niget2002
Well-known member
There's a lot of people out there that aren't looking for an answer to their question ... They're looking for justification to do whatever it is they had already planned.
like2wheel
Well-known member
Right.
But there are also plenty of people that reply "the sky is falling!" to questions that they really don't know the answer to, and because of that would be uncomfortable doing themselves. Almost like they are trying to hold people down to their level. Or to justify their personal choice.
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BigGarage
Well-known member
JRC3
Well-known member
OK, now that's been put to bed, I have another question...I just fixed my leaking compressor tank with a few screws and some JB Weld...How long should I let the JBW cure before using?
mike93lx
ALLIANCE MEMBER
It cures almost instantly when you use a welding torch.
Natty Bumppo
Well-known member
I guess I had the last page or so in mind. Beginning at post 60 or so...this thread seemed to get a bit chaotic IMO. Post #70 poorUB commented the thread is "going off the rails."
After that I saw several dudes arguing, a mention of "safety Nazis", accusations of personal insults, Chinese politics, and my favorite...a recommendation to never try lifting a bus full of nuns with a jack.
But yes, all perfectly normal and useful.
I still agree with you though...think this was all the work of a troll.
niget2002
Well-known member
I let mine sit overnight.
driftpin
Well-known member
O.P: 11 posts, all in the thread he started, no other posts in any other threads. Have you noticed this odd behaviour? His spelling follows the King's English, and not that of the US of A! Someone ask him "what type of motor oil should I use in my Jowett Jupiter," and we'll expose him when he answers with authority.
PugetDude
ALLIANCE MEMBER
Keep in mind that offgassing from your PVC airlines will retard JB Weld cure time.
JRC3
Well-known member
bubinga
Well-known member
Jim greengo
Well-known member
Go to bottom of the harbor freight .
Grab a screwdriver off the shelf,adjust the screw in till it stops,counting turns as you do it.
Theres your unscientific way of solving the problem ,or you could just buy another jack while you're there.
bubinga
Well-known member
And if they say "can I help you" while you're doing that, tell them, "no I'm good"
BigGarage
Well-known member
This just isn't as much fun when I have to explain it but here goes.
The OP didn't cause any chaos, the people in this thread with "lower than their shoe size IQ's" caused it.
That is all.
Dennis
Walkers
Well-known member
Finally someone with some sanity. My other go to method is to go buy a new jack, save the receipt, and return the old jack just prior to the warranty ending.
Natty Bumppo
Well-known member
Fair enough. I see what you're saying. Since we are both wasting energy on a bizarre thread discussing my use of the word "chaos" I will only add that I don't think the OP did anybody any favors when he posted this thread, which I think you and I both agree, is a complete fabrication. So no Random Internet User = no chaos.
But I digress....
Str8Shootr
Member
Yeah I've needed one of those signs occasionally
PugetDude
ALLIANCE MEMBER
I hope the OP is able to post an update on this thread; haven't been able to sleep worrying about that HF jack blowing up.
strutaeng
Well-known member
Looks like OP only lived 2 days on GJ...
niget2002
Well-known member
I've heard GJ is better in smaller quantities.Looks like OP only lived 2 days on GJ...
Hohn
Well-known member
How does someone with 11 posts here and an entitled attitude despite being less than wise have any "pals" here already? Curious minds want to know.
Hohn
Well-known member
If you set it too high, you simply have to make sure you don't try anything more than 2 tons, which shouldn't be too hard to do.
racecougar
Well-known member
This thread has been dead and done for over a year and a half.
Sounds like what I have been doing since age three lol.
afinepoint
Well-known member
- Joined
- Jul 16, 2024
- Messages
- 197
Harbour Freight Technical support: 1 (888) 866-5797. They don't make it but then again despite the odds there's always a lottery winner. Good luck. Perhaps this is fate telling you to trade up.
PugetDude
ALLIANCE MEMBER
Done, never dead.
It's feeling much better.
Best read ever, thank you GJ for the entertainment. Lots of good common sense answers here, and a whole bunch of FUD. I’m an actual aerospace engineer who has designed and flown hardware to space. Half the people on this thread would need a change of pants if they knew what type of flaws are acceptable and how skinny the safety factors are for crewed flights. Go have a look at NASA-STD-5012 if you are curious.
For ground hardware like a jack, HF would be crazy to make the metallic structure subject to possible failure at max bypass pressure (screw all in). It probably has at least a 4-to-1 factor on the max rated load. You’re more likely to be injured using the stairs or texting while driving. Maybe lay off the beers in your home shop if you care about safety. Y’all ever worry about heart disease? Use your own judgment, and this isn’t advice or a recommendation. Fu*k it, Fly it boys and girls.
For ground hardware like a jack, HF would be crazy to make the metallic structure subject to possible failure at max bypass pressure (screw all in). It probably has at least a 4-to-1 factor on the max rated load. You’re more likely to be injured using the stairs or texting while driving. Maybe lay off the beers in your home shop if you care about safety. Y’all ever worry about heart disease? Use your own judgment, and this isn’t advice or a recommendation. Fu*k it, Fly it boys and girls.
finn
Well-known member
Maybe not.
My son folded up a HF aluminum jack while lifting his stock late seventies Toyota FJ 40.
Hydraulics didn’t burst, safety didn’t bypass. Safety never molested.
The jack folded up.
That seems like a fos of a lot less than one.
Watching the fuel filter on a Airbus A320 be replaced wants me to never want to fly again.
With regard to the aluminum harbor freight jack failure that leads us into the difference between “reliability engineering” and “structural safety margins”. It’s certainly possible to design something with beefy safety margins for structural loads and then absolutely screw the pooch on reliability engineering. A company needs to build parts to print, test like they fly, and have a work order process and quality control system to catch deviations from the known good formula. Even if all that happens just perfectly, given a large enough sample size bad things will happen. Six Sigma quality products kill people all day, and it’s the best quality money can buy. Point being it’s way less dangerous than staircases and heart attacks. Someone has to get hit by lightning eventually. Fortunately it sounds like your son didn’t get hurt, basic common sense helps a lot here.
The easy to find internet failure of a HF jack letting go was due to a circular clip popping off a cross shaft attached to the hydraulic ram, allowing two tabs to be liberated as shown below. This is a reliability engineering problem. It is also why PFMEA (process failure mode and effects analysis) is important. Typically something changes like coating thickness, groove cutting tool profile, snap ring supplier, and out pops a new failure mode nobody but Murphy planned for. It wasn’t a structural problem, it was a reliability and quality problem.
Everyone should do what they think is best for themselves. In some possible scenario a guy decides touching the pressure relief screw on his jack was dangerously irresponsible so he falls down the stairs or crashes his car on the way to harbor freight to buy a fresh replacement. Perhaps he tosses out his perfectly reliable steel jack and replaces it with an aluminum one like below, opening up a new failure mode possibility.
Personally, I don’t mind the occasional sketchy lift using arborist rope and a bowline knot, but I try to avoid standing directly under it. Some folks are crazy enough to climb K2 when they know it has a 23% mortality rate. Smoke ‘em while you got ‘em and yeah they come with a warning label.
The easy to find internet failure of a HF jack letting go was due to a circular clip popping off a cross shaft attached to the hydraulic ram, allowing two tabs to be liberated as shown below. This is a reliability engineering problem. It is also why PFMEA (process failure mode and effects analysis) is important. Typically something changes like coating thickness, groove cutting tool profile, snap ring supplier, and out pops a new failure mode nobody but Murphy planned for. It wasn’t a structural problem, it was a reliability and quality problem.
Everyone should do what they think is best for themselves. In some possible scenario a guy decides touching the pressure relief screw on his jack was dangerously irresponsible so he falls down the stairs or crashes his car on the way to harbor freight to buy a fresh replacement. Perhaps he tosses out his perfectly reliable steel jack and replaces it with an aluminum one like below, opening up a new failure mode possibility.
Personally, I don’t mind the occasional sketchy lift using arborist rope and a bowline knot, but I try to avoid standing directly under it. Some folks are crazy enough to climb K2 when they know it has a 23% mortality rate. Smoke ‘em while you got ‘em and yeah they come with a warning label.