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Tool Talk Discussion Forum

High Lift Jacks

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Gary Alford

03-03-2008 10:16:05




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Does anyone know of a high lift jack that has a better stability than the usual ones sold? I can"t count how many times I"ve had one tip on me.




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Gary Alford

03-05-2008 04:23:16




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
I once had a tripod bumper jack back in the day when cars had bumpers, it too was very stable, too bad someone doesn't make a heavier version for tractors.



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2x4

03-04-2008 20:26:58




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
like Fred says, oil is one key to safety. This flys in the face of reason, as you would think the drier the better grip. But that's not the way they work. Several accidents I have seen after using one 40 years, was while jacking up, the pins suddenly release & the jack sides down to the bottom when you aren't expecting it. This can be caused by dry pins. Use oil.



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36 coupe

03-05-2008 01:46:05




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 Re: High Lift Jacks in reply to 2x4, 03-04-2008 20:26:58  
The pins dont release,they never make it into the hole in the beam if the pins are rusty or gummed up.The pins are pushed into the holes by coil springs.Have some one operate the jack while you watch the pins work.



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Ron in Nebr

03-04-2008 23:13:31




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 Re: High Lift Jacks in reply to 2x4, 03-04-2008 20:26:58  
This is kinda backwoodsy, but in a pinch out in the middle of nowhere with a handyman jack that'd been riding in the back of the pickup for who knows how long, long enough for any oil to be long gone and replaced with dirt, rust, and crud anyway, it's common practice to, um....take a leak on the pin mechanism to "lube" it. Sounds crude I know, but it's usually enough to get those pins sliding good enough to get the job done.....

Myself, if I have one of those jacks in a vehicle, I try to make darn sure I have a can of WD-40 in there someplace as well.

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36 coupe

03-05-2008 01:39:03




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 Re: High Lift Jacks in reply to Ron in Nebr, 03-04-2008 23:13:31  
WD 40 leaves a gummy residue behind when it dries, the last thing you want on the climbing pins.WD 40 is made to displace water,not a lubricant.If a climbing pin binds it wont go into the hole in the beam and the load will drop.



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Fred Martin

03-04-2008 10:49:21




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
Everyone pretty well stressed the bad points about the high lift jacks. I bought a new one and found another one slightly bent at the bottom at the local junkyard. It was an easy straighten job in the fifty ton press. I always wondered why the previous owner tossed it. After using the jacks for a while I kinda sorta seen why...not only will they tilt on you, you have to be very careful or they'll take the face off of you. That lever will jump up at you faster than you can get out of the way...not all the time...but just as you start to gain confidence in the thing...bingo...it comes flying up to do bodily harm. So, the word of caution here is to NEVER stand in line so it can hurt you...and keep the climbing pins WELL oiled to try and prevent that first uh-oh. It almost got me and I want to be a quick learner in cases like this and prevent you from doing it too. ohfred

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Gary Alford

03-04-2008 10:07:51




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
I get what everyone out there is saying, I was a heavy equip. mech. for over 30 yrs. and still have all my parts, and yes there were a few close calls as we worked out in all conditions, but I am always looking for a better tool!



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Stan in Oly, WA

03-04-2008 09:53:11




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
Hi Gary,

A few years ago I was having coffee with a woman I was working for when she had to excuse herself to take a phone call from her sister. What she learned was that her sister's husband had just been killed when his car fell on him in their garage. The surprising thing about it was that he was a high school auto shop teacher and was well known for always making a big point of requiring students to block up any vehicle they were working on---even if they wouldn't be under it. He wouldn't let his son and his son's friends work on a car in the family garage or driveway if any jacking was involved until he had personally inspected the stability of the blocking they had used. I'll bet his last thought was one that I'd never want to have.

All the best, Stan

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Stumpalump

03-04-2008 08:46:57




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
This one is nice if your in a hurry.http://www.kingshocks.com/accessories.php?action=accessories



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Stumpalump

03-04-2008 08:48:37




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 Re: High Lift Jacks in reply to Stumpalump, 03-04-2008 08:46:57  
Better link



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T_Bone

03-03-2008 13:11:36




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
Hi Gary,
I think it depends on how your using the jack. I've observered alot of people that with any type of jack used, try to raise the load too high too fast without adding any type of stability blocking as the load is raised.

The higher the load is lifted off a stable platform the more likey that load is to shift and fall. As a load is raised it will also change the angle of the lifting device from being a perfect vertical support. That's when the load needs to be set on blocking and the jack needs to be repositioned back to perfect vertical alignment. Without this repositioning of the lifting device, the load will pull the lifting device over and fall.

Most all high lifting devices use out riggers to add stability to lift loads very high without adding temporary blocking. Examples would be cranes, 2-ton cherry pickers, backhoes, scalfolding, etc;. All of those type of lifting devices use external stablizers around the lifting device as the load is being rasied.
Then why would not a person need to add out riggers to a high-lift jack when ecpecting that jack to lift loads very high without using temporary blocking and moving the jack in small raising steps?
The other use of a high-lift jack is for horizontal pushing and pulling (winch) of loads. This is where the length of the jack would be greatly needed and works very well.
T_Bone

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What I Do

03-03-2008 15:37:18




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
I've always bolted the base to a section of heavy C channel...big enough that the jack will stand by itself.
Used them for the past 40 some years without a problem. But common sense is the most important thing to remember when using them.



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Use your brain

03-03-2008 12:32:55




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
The stability of any jack can't be controlled by brand or even quality if the user doesn't use their brain and some common sense when using it accidents can still happen.



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36 coupe

03-04-2008 05:43:51




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 Re: High Lift Jacks in reply to Use your brain, 03-03-2008 12:32:55  
These jacks compare to a shotgun,you can shoot your toe off or get a couple of rabbits for a nice stew.Ive used one for 35 years.The climbing pins must be kept clean and you have to keep a firm grip on the handle.I would stay away from import fakes.Likes most tools ,if you misuse them, you will get hurt.My biggest problem is keeping friends from borrowing it.



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Crem

03-03-2008 16:29:48




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 Re: High Lift Jacks in reply to Use your brain, 03-03-2008 12:32:55  
My brothers and I used them pretty recklessly back when we were growing up. I always wondered why they didn't break off in the middle as we pried and pushed them around. They sure would jack up a car from the fifties well though especially stock cars. :o)) I still use one but with a lot more caution though.



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jokers

03-03-2008 15:58:54




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 Re: High Lift Jacks in reply to Use your brain, 03-03-2008 12:32:55  
That`s the thing, a person needs to shore up whatever he`s lifted with cribbing to prevent it from falling down, preferably progressively as the item is lifted further away from the ground.

I took part in a really interesting demo of Vetter air bags quite a few years ago. The guy providing the technical expertise on the demo, a man who had experience from many hundreds of extrications of people from crushed vehicles, couldn`t stop and stress enough to make sure that every lifted or pried item was adequately cribbed to prevent the gap from reclosing.

I`ve had a Hi Lift jack for about 20 years and it`s a great multi purpose tool.

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Mattlt

03-04-2008 05:35:38




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 Re: High Lift Jacks in reply to jokers, 03-03-2008 15:58:54  
"Lift an inch, crib an inch."



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KIP in MX

03-03-2008 11:10:27




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
This is what we use, but they aren�t cheap!



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Gary Alford

03-04-2008 04:26:57




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 Re: High Lift Jacks in reply to KIP in MX, 03-03-2008 11:10:27  
Those are definately nice jacks but I am shure we can't afford them.



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Gary Alford

03-04-2008 04:13:29




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 Re: High Lift Jacks in reply to KIP in MX, 03-03-2008 11:10:27  
What do they cost?



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Mike M

03-03-2008 10:46:04




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
Widow Maker Jacks !



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Goose

03-03-2008 10:37:41




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 Re: High Lift Jacks in reply to Gary Alford, 03-03-2008 10:16:05  
I avoid them all like the plague.

I had a car fall off of a jack onto me when I was 16. I wound up with just bruises, but it was a lesson that stuck with me since.



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36 coupe

03-05-2008 01:31:21




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 Re: High Lift Jacks in reply to Goose, 03-03-2008 10:37:41  
I had a tripod type bumper jack that was very stable.It had 3/8 handle that went thru the raising screw.There was a thrust bearing between the jack frame and the crank handle.While I was jacking the car to change a tire the raising screw broke where it was drilled thru for the crank handle.It dropped the load.I have had my HiLift jack drop the load when the climbing pins were dirty.Fellow I knew died under a car and I worked with a fellow who got pinned under a car when a jack slipped.I saw a friends Jeep come off a pair of ramps sideways on black top on a hot day, front edge of ramps cut into blacktop.I put a square of 3/4 plywood under the front edge.

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