truck lift

[bobsmanstuff]

I want to lift my 1930 pickup up and put it on jack stands. Is it safe to lift it up with a floor jack under the pumpkin? Thanks

[jw hash]

Yes it is, that is the best place under the rear. the front put the jack under the center of the axle.

[Railcarmover]

always support and lift by the axles,never use the frame.

[dustyp489]

I do it all the time , I like lifts under under my wheels in place of jack stands,more clearance to work. Just my 2 cents.
Skip

[Joe K]

And don't forget the "two redundant means of support" when working under a vehicle.

Mark "The Bird" Fidrych comes to mind.

Joe K

[veggie]

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Hi Ayers

I have a motorcycle jack to pick up the front end under the axle and also works on the rear under the rear end.
It works perfectly!
31 pick up
31 coupe

[bobsmanstuff]

Thanks a lot guys I appreciate the help.

[katy]

Originally Posted by Joe K

And don't forget the "two redundant means of support" when working under a vehicle.

Mark "The Bird" Fidrych comes to mind.

Joe K

Please elaborate on "two redundant means of support", never heard that one before.

[Joe K]

Originally Posted by katy

Please elaborate on "two redundant means of support", never heard that one before.

Simple thought. When using a jack - back it up with a "jack stand" or a second jack such that if the first jack should fail, the load is taken up by the second. The jack stand need not even carry any load initially - but "be there" in case of a failure.

Having a single jack under four corners of a vehicle may not cut it by itself. Sometimes when one means of support fails, it cause other supports to be "out of line" or otherwise less than optimally applied and fail successively.

The failure of a "skywalk" at a Hyatt Regency Inn a few years back comes to mind. Any single support of that reinforced concrete was enough - more than enough - to support that single section alone. But when used in combination, a failure of a single support caused a "cascade" failure of the rest. https://en.wikipedia.org/wiki/Hyatt_...lkway_collapse

I have the typical Harbor Freight type hydraulic pump jacks - yunno - the ones that look like a baby brother to a "real" garage jack. I frequently use two of these, one under each side at one end of the car. A failure of one of these might give one a start - but probably won't drop the car on top of you being supported as it is on the other side. Still, I am known to put up the el-cheapo "jackstands" (you know - three legs and a telescoping top with a cross pin to hold it to size) adjacent to the Harbor Freight devices.


Joe K

[bobsmanstuff]

I do plan on putting 4 jack stands under the truck. Just wanted to make sure I could jack it up under the rear end. Thanks

[Ruth]

Originally Posted by Joe K

Simple thought. When using a jack - back it up with a "jack stand" or a second jack such that if the first jack should fail, the load is taken up by the second. The jack stand need not even carry any load initially - but "be there" in case of a failure.

Having a single jack under four corners of a vehicle may not cut it by itself. Sometimes when one means of support fails, it cause other supports to be "out of line" or otherwise less than optimally applied and fail successively.

Joe K

We do it the other way around. Put the car on good jack stands and leave the jack under the car 'just in case'. Never get under a car depending on a jack.

[katy]

Joe K, thanks.

Never get under a car depending on a jack.

Ditto

[Joe K]

Originally Posted by katy

Joe K, thanks.
Ditto

You both and my Dad would be in agreement.

I may be getting "lazy" - but not stupid yet.

Thanks for the reminder.

And need I mention the stability difference between the three-legged "telescoping" jack-stands and the more substantial (and costly) four legged ratchet version.

Telescoping



Better


And even the better design can be compromised. Hence the two visible means of support.




Dad had a saying "The best tools are none too good." Considering the challenge of ANY job, its best to have the best available to do it with - and eliminate at least that possible failure path.


Joe K

[katy]

Many years ago I remember seeing axle stands made from Model T rear axle housings. They were non adjustable. "one size fits all" sort of thing.

[Osage Orange]

I was a reporter for 17 years, and saw a lot of ugly carnage. One of the worst was the guy doing work beneath a double-wide trailer that had been using concrete blocks and no backup. Aaaagh!

[vern hodgson]

Originally Posted by veggie

Hi Ayers

I have a motorcycle jack to pick up the front end under the axle and also works on the rear under the rear end.
It works perfectly!
31 pick up
31 coupe

Ditto

[Synchro909]

Originally Posted by Osage Orange

I was a reporter for 17 years, and saw a lot of ugly carnage. One of the worst was the guy doing work beneath a double-wide trailer that had been using concrete blocks and no backup. Aaaagh!

I was about to say something here about using blocks under the car and your post highlights what I was going to say.
I sometimes use big blocks of wood as a backup. The wood must be solid and dry. Wet or green wood can slip. I NEVER use masonry of any kind. If it so much as cracks, its strength is reduced to zero.
Fortunately, I've never needed the backup and hope I never do. I would feel nervous about crawling under a car without knowing some other support was there for me.

[updraught]

Originally Posted by Joe K

And don't forget the "two redundant means of support" when working under a vehicle.

Mark "The Bird" Fidrych comes to mind.

Joe K

I had to look up "The Bird".
Some interesting statistics there:

“According to the report, in 2007 more than 168 people were killed by falling vehicles, and more than 10,000 people were injured in hoist or jack incidents."

So there were just less than 10,000 with some bit of their anatomy turned to strawberry jam.

[Purdy Swoft]

I would also avoid the use of a bumper jack , if at all possible .

[old31]

I thought it was just me being a little sissy.

Before I got my lift I always used 4 - 6 ton stands, 2 under the front axle and 2 under the rear axle and a jack under the pumpkin and a jack under the middle of the front axle. Just in case a stand let go.

Also, for those that have slanted garage floors. It is a very good idea to chock the front wheels before lifting the rear end with a jack.

[cjkohnast]

Besides the two jacks and jack stands I have a pile of 2X12 lumber 3feet long. I pile them up on both sides of me. You can really relax under there with these next to you.

[California Travieso]

Originally Posted by cjkohnast

Besides the two jacks and jack stands I have a pile of 2X12 lumber 3feet long. I pile them up on both sides of me. You can really relax under there with these next to you.

The higher you pile the lumber, the more unstable the pile becomes. I would be concerned that the piles of lumber would shift unless there was some way of supporting or bracing them to prevent that.

David Serrano

[nhusa]

I got rid of the tubular Jack stands many years ago.
I now have 6 of the "better ones" and never get under a vehicle unless at least one end has TWO jack stands backed up by a floor jack that has the pressure slightly released.


When I want both ends of the vehicle raised up I do one end and then the other
AND I use 4 jack stands.


I never use two jack stands on one side as shown in the failure picture.


When I was a kid - before jack stands I used big wooden blocks - not stacked.
My dad would have shot me if I tried to use cement blocks.

[whirnot]

Here's a good option

[bobsmanstuff]

about 50 years ago my uncle was under a 56 buick with the front tires off. The jack tipped and the car feel on him. He laid there most of the day and could only move one thumb at first. He dug a whole eventually big enough to crawl out. He was pretty banged up but did recover.

[Tom Wesenberg]

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Originally Posted by nhusa

I got rid of the tubular Jack stands many years ago.
I now have 6 of the "better ones" and never get under a vehicle unless at least one end has TWO jack stands backed up by a floor jack that has the pressure slightly released.


When I want both ends of the vehicle raised up I do one end and then the other
AND I use 4 jack stands.


I never use two jack stands on one side as shown in the failure picture.


When I was a kid - before jack stands I used big wooden blocks - not stacked.
My dad would have shot me if I tried to use cement blocks.

X2 When I was younger and thought less about safety, I sometimes would get under a car supported by just the floor jack. No more of that!
Years ago I bought 6 of the widow maker 3 legged stamped tubular jack stands. One collapsed on me, and I immediately got rid of those pieces of junk.