Jack
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Senior User
Joined: Jan 2006
Posts: 374
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From: Las Vegas,nv
Jack
When working on your trucks what tonage rating is your jack. I want to buy a floor jack but the most I can find is a 4 ton thats 800lbs short of what my truck weighs. I understand I wont have all the weight of the truck on the jack at once so would this be safe or no?
Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
For some reason automotive jacks are rated for the vehicle total weight, not for the actual lift.
I have hard time to lift one corner of 3000lb car with 2-tons jack.
Once I used 5-tons HD stand on my motorhome, that has 15-tons total.
Even assuming, that the rear corner is heavier, than 15/4= 4 tons, when I let the hydraulic jack go, the stand split in half with no visible resistance.
They built them with some safety margin, but I am not going under my low-clearance motorhome without putting some 4x12 planks under.
I have hard time to lift one corner of 3000lb car with 2-tons jack.
Once I used 5-tons HD stand on my motorhome, that has 15-tons total.
Even assuming, that the rear corner is heavier, than 15/4= 4 tons, when I let the hydraulic jack go, the stand split in half with no visible resistance.
They built them with some safety margin, but I am not going under my low-clearance motorhome without putting some 4x12 planks under.
