#FLOOR JACK PDF#
Doing that will allow you to download a PDF of this Instructable for printing, or to view at any time later on your computer, assuming you wish to consult what I have done as a guide.
#FLOOR JACK PASSWORD#
If you want to attempt rebuilding a jack and you are not a member of Instructables, I would encourage you to pick a password and a screenname, and join. Further, I had to make several special tools to get the job done. Rebuilding this jack was much more difficult than simply replacing a few "O" rings, and it required more than the very few hours some say are required for rebuilding a jack. A word of caution: Rebuilding this jack presented several challenges that seemed almost insurmountable at the occurrence of each. From what I have read, forty years of service is a reasonable time for a hydraulic jack to operate before it needs a rebuild. If filling with fluid and purging air from the system do not restore function, there is probably internal leakage, even though fluid is not leaking from the jack. Finally, one day, the lift arm would not rise at all. At that time I raised the lift arm with the handle, released the jack's valve, and let the arm fall slowly several times to purge air from the system. A few months before this problem, there were bubbles coming up through the vents at the filler plug. I checked to be sure it was adequately filled with fluid, but that was not the problem.
(I was able to pull the lift arm up by hand and it settled slowly enough that I could make a photo with the arm partially raised.) The lift arm no longer rises when the handle is pumped up and down. It began to leak down a little a few months ago. Or, alternatively, you can buy a set of properly rated ramps, and use those to get enough clearance to work under all of your cars.This is a 1 1/4 ton hydraulic floor jack my father passed on to me. You can get a three-ton jack, or let someone who has one work on your Suburban. RAY: Similarly, you don't want to be under a Chevy Suburban that's held up by a jack that's quavering at the limit of its abilities. Does that mean we should all lie down and wait seven days between drinks? For instance, some scientists say a man can go seven days without water in 90-degree heat, as long as he doesn't move. TOM: It's never good to operate anything at the absolute limit of its ability. And unless the jack is absolutely, perfectly centered AND the weight of the car is perfectly centered (which you can't always count on), the jack's linkage bars can begin to distort under the maximum weight, causing the jack to flip and the car to come crashing down. But second, and more importantly, you leave no room for error. RAY: One is that it gets very hard to lift the car. But when you operate at the limit of the jack's ability, two things happen. It has to lift half of it - taking two wheels off the ground. TOM: Here's why: It's true that a floor jack does not have to lift all of the car's weight. RAY: So, if you want to work on your 7,000-pound Suburban, you'll need to get a three-ton jack, Isao. So, according to our rule, a one-and-a-half-ton (3,000-pound) jack could lift a car that weighs as much as 4,000 pounds - or two mothers-in-law. Our rule of thumb is that a floor jack needs to be rated for at least three-quarters of a vehicle's gross weight. If I plan to work on trucks and SUVs in the future, do I need to get a jack with a higher range? - Isao What do you recommend? If I have to get a three-and-a-half-ton behemoth, I probably would not bother working on the Suburban on my own.
But there were some that said I need to get a jack that is big enough to hold the whole weight of the truck, which would be more like three or three and a half tons. I tried calling some shops and was told by some that a one-and-a-half- or two-ton jack would be enough, since the jack will not be lifting the whole truck. However, we also happen to own a Chevy Suburban with a gross vehicle weight of 7,000 pounds. I know that a two-ton jack would be plenty to work on a regular car - e.g., a Civic, Altima, etc. I am looking for a floor jack for my personal use and need some advice on how big a jack I need to get.
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