5 Ton Jacking Procedures

[Ajax MD]

Before we get started, I did read the -20 TM and the procedures provided (and illustrated) are for using a mega floor jack, not bottle jacks.
Most people here seem to use bottle jacks except for hardcore professional types.
I also searched the archives but as usual, my search key words and phrases may not have uncovered the best threads.

I understand the kind of cribbing needed *underneath* a jack or stands. My questions are related to the top of the jack.
In this deuce thread: https://www.steelsoldiers.com/showthread.php?152065-Jacking-up-Deuce-front-end-(from-the-frame)

there are excellent photos showing the bottle jack placement at leaf springs and other areas, but what I am concerned about, is jacking the pumpkin or axle ends with a bottle jack. It would seem to me, that the contact point of a bottle jack is too small, and risks damaging the pumpkin. I was surprised to see in these photos, no protective cribbing between the contact point of the bottle jack and the truck.

I may be overestimating the forces at work here, but what kind of wood cribbing would be sufficient to protect the pumpkin or axle ends for jacking with a bottle jack?
Plain, Home Depot grade pine might be too soft and split open while jacking, punching through to the pumpkin.

Bottle jacks lack the stability of floor jacks. With the proper cribbing, do you guys feel secure jacking the axles from the pumpkin with a bottle jack or do you just jack up each axle END and then slip the jack stands under the axle?

Sorry if I'm over-analyzing this, but there are some pretty powerful forces at work here and it's a safety item. Thanks.

 

[simp5782]

Get a 8 ft 6x6 and a 10ft 4x4. Cut them up at around 2 ft in length. So you have plenty. In the event of a blowout and it goes down to the ground then you will need alot to grib the drum and reset your jack. You want to raise the truck on the rear using the flat spot on the leaf spring saddles under the axle where the dog bone insert goes in above it.

It is flat on the bottom so the jack has a good point to hit and be steady.
You can then install your jack stand just inside of the torque rod on the axle tube
It's a 5 ton Rockwell your bottle jack will not knock a hole in the axle tube. You do not want to jack it up under the pumpkin

If you are working on a hub or whatever on the truck it's best to work on 1 at a time unless it's some massive project.

 

[Scar59]

Find some rough cut oak to make your cribbing, pine will crush/split. Follow Simp's instructions.

 

[Ajax MD]

Great, thanks for the specific locations.

- Use oak
- No jacking under the pumpkin
- Try to limit jobs to one side at a time

Home Despot is such crap. I'll hit the 84 Lumber.

 

[porkysplace]

The -10 covers jacking with a bottle jack .

TM9-2320-260-10.pdf
TM9-2320-260-10 Operators manual for the M809 series truck.

 

[Ajax MD]

The -10 covers jacking with a bottle jack .

TM9-2320-260-10.pdf
TM9-2320-260-10 Operators manual for the M809 series truck.

Cripes, I have got to keep digging before I post questions. I really didn't think jacking instructions would be in more than one manual.

 

[BenRoberts]

pic of when I did seals. Not sure if it helps

 

[porkysplace]

View attachment 754637 pic of when I did seals. Not sure if it helps

The cement block on it's side isn't going to do anything but blow apart , they have no strength on there sides . Pretty much unsafe any way you use them for blocking.

 

[BenRoberts]

It's 2 stacked in top of each other. Been a decent set up so far.....till it's not

 

[BenRoberts]

That other block is just there it's not doing anything

 

[162tcat]

The cement block on it's side isn't going to do anything but blow apart , they have no strength on there sides . Pretty much unsafe any way you use them for blocking.

The two landscape blocks are probably OK but I personally would not trust them. It would be better if you had a piece of wood sandwiched between them and the asphalt, each other and the Jack. The cinderblock on its side is a definite no-no. That thing is just waiting to crumble and fall to pieces.

 

[BenRoberts]

The two landscape blocks are probably OK but I personally would not trust them. It would be better if you had a piece of wood sandwiched between them and the asphalt, each other and the Jack. The cinderblock on its side is a definite no-no. That thing is just waiting to crumble and fall to pieces.

The block was never used in the lifting of the truck. It was thought about but decided not to. Never moved it till I was done

 

[Ajax MD]

View attachment 754637 pic of when I did seals. Not sure if it helps

What is the small Jack stand in the center for?

 

[simp5782]

Just safety in case the whole trunion falls. Impractical with both jack stands having to fail together . You only use a jack there when you are lowering the trunion for the spring packs being removed

 

[BenRoberts]

What is the small Jack stand in the center for?

Made me feel better

 

[simp5782]

i say you all just need to quit with the jack technique questions and just buy yourself a wrecker to lift it and place it on the jackstands. It is a pretty good reason to tell your wives as to why you now need a wrecker to match your cargo truck. Or in the event you break down she can come save you in it. used the wrecker to put 1600s on the M786A1

Some friends don't mind helping when it comes to not having to do much work other than sling a chain and push a lever.

 

[BenRoberts]

i say you all just need to quit with the jack technique questions and just buy yourself a wrecker to lift it and place it on the jackstands. It is a pretty good reason to tell your wives as to why you now need a wrecker to match your cargo truck. Or in the event you break down she can come save you in it. used the wrecker to put 1600s on the M786A1

Some friends don't mind helping when it comes to not having to do much work other than sling a chain and push a lever.

Amen brother!!

 

[Ajax MD]

i say you all just need to quit with the jack technique questions and just buy yourself a wrecker to lift it and place it on the jackstands. It is a pretty good reason to tell your wives as to why you now need a wrecker to match your cargo truck. Or in the event you break down she can come save you in it. used the wrecker to put 1600s on the M786A1

Some friends don't mind helping when it comes to not having to do much work other than sling a chain and push a lever.

Love it! I only have a half acre though, and some of that is taken up with large trees. I'm probably limited to one truck, a small trailer or maybe a HMMWV...as well as the limitations of my wallet!
I know I'm going to need help with a repair at some point in the future but I'm going to try to be as independent as possible first.