38 replies to this topic

[Bill D]

Firestone says not to use the Daystar cradles: http://blog.truckspr...te-air-bag-kits

 

The instructions do say not to lift by the frame or damage may occur, but if you have to lift by the frame to deflate the bags. I would only try and jack up my truck with the rock rails if I had no other choice.

 

Since I installed my air bags I have upgraded my suspension to an OME lift with heavy springs and extra leaf in the rear, so the air bags are mostly redundant now and have little pressure in them.

 

Here is the actual instructions.  They reflect exactly what Stalking Light mentioned.

 

NOTE: Once the air helper springs are installed, it is recommended that the vehicle not be lifted by the frame, as over-extension may occur, resulting in damage to the air helper springs. However, should it become necessary to raise the vehicle by the frame, deflate both air helper springs completely. 

[wuck]

But I had no trouble using the stock/OEM bottle jack to jack up my F250 with FWC Hawk

 

Me too. Promontory Pt, Utah, F250 rear tire w/stock "Bottle Jack" on Central Pacific RR ROW.

 

150+/- year old spike, or the remnants of it.

 

[Bill D]

Me too. Promontory Pt, Utah, F250 rear tire w/stock "Bottle Jack" on Central Pacific RR ROW.

 

150+/- year old spike, or the remnants of it.

 

P1010902r.JPG

You should be a hand model 

[wuck]

You should be a hand model 

 

Gee, umm, thanks Bill, umm, I think. You know, my feet are really cute too. . . 

[Old Crow]

Just thought I'd post a comparison photo and weights and dimensions of two I've been trying to decide between for my rig.  I'm not quite convinced I can't just live with my stock jack but did find it a bit shaky when I used it on a recent trip.... and that was on a flat, paved surface.

 

On the left is a scissor jack a friend gave me after picking up several at a local military base's reutilization store.  It's a  3-1/2 ton unit from a M998 Humvee.  On the right is a US General (Harbor Freight) 1-1/2 ton compact aluminum/steel 'racing jack' I've used for several years (light use).

 

Weights: Humvee=23 pounds ; floorjack=27 pounds

 

Lifting ranges : Humvee=6" to 19";  floorjack= 3" to 15" (at saddle).

 

Movement of load:  Humvee= straight up ;  floorjack=saddle shifts back several inches as the load rises

 

Dimensions:  Humvee= 22L x 9W x 7H,  floorjack= 22L x 10W (max) x 8H (plus lever sections)

 

Other info:  the Humvee jacks are available on ebay and at military surplus stores.  They seem to be typically $75 to $100 or more.  Best price I found is Coleman's Surplus ($40) in PA but shipping to west coast is another $30 or so and may not include the bag.

Also- Harbor Freight has sales on the racing jack all the time.  Their 4th of July sale has their latest version of it for $68.  But is 3000# enough?

 

-OC

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Edited by Old Crow, 26 June 2015 - 05:44 PM.

[Advmoto18]

While I have never had the priviledge of raising a Humvee with the scissor jack, I have watched others perform the task.  The Humvee scissor jack is very robust jack.  I'm not sure I'd be using a block of wood over the chasis post for fear of cracking and load shift.  I have seen others use two hockey pucks with holes drilled for the jack's chasis post.

Edited by Advmoto18, 26 June 2015 - 08:21 PM.

[Old Crow]

advmoto- yeah, I agree on the wooden block. I've been looking for something like the axle cradle at http://www.amazon.co...ottle jack axle but that's not quite it.

 

That's a great tip on the hockey pucks.  Thanks!

 

-OC

[ntsqd]

The right species of wood I'd have no worries about. The wrong species......

[super doody]

There is also the inflatable jack: