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From: Noozer on 18 Oct 2007 19:11 > I don't mean to be picky, and you obviously have more > experience than I have with automobiles, but the > way you're rotating tires from front to rear means > you're only using /one/ jack stand while two wheels > are off the ground. You're using the floor jack to > support the front tire and the single jack stand to > support the rear tire. Take the whole procedure step by step. You have the rear wheel up in the air, it's on a jackstand. Now you put the front end on the jack and jack it up. At this point do you do... (a) Crawl under the car to place the jackstand, then swap the tires, then crawl under the car and remove the jackstand. - or - (b) Swap the tires. ....then lower the car. Seems a lot safer to do (b)
From: Built_Well on 18 Oct 2007 22:02 The car ramps available at Walmart are unique. The ramps are constructed in a way that allows one to fit inside another. Each single ramp can support 3,000 pounds, so a pair would be good for 6,000. But if you stack 2 together (one on top of the other), a set of 4 ramps can be used to lift the front end tires of a 12,000-pound vehicle! That's what the stickers on the ramps say, anyway.
From: news on 18 Oct 2007 23:25 Mike Romain wrote: > Built_Well wrote: >> Mike Romain wrote: >> >>> If I 'must' use a sheet metal notch as a jack point, >>> I use a 2x4 on the saddle of the jack or stand to help >>> spread out the pressure. >> ======== >> >> I don't know if this would be a safe idea. I think I saw >> on the box of some Craftsman jack stands a warning not to >> place anything between the stands and the car. >> >> And here's a quote from the '06 Camry manual relating to >> the jack itself, though not the stands: >> >> "When raising the vehicle, do not place any objects >> on top of or underneath the jack." >> >> The same probably applies to the stands. >> > > Note I said 'if I must'. I 'really really' try not to use rocker panels > for lifting or bracing. > > Maybe not the safest, but you will see what I mean soon enough likely. > > I think spreading out the weight is safer than the jack going through > the rocker panel. > > If you live someplace where they don't use salt on the roads, you might > not run into this, but up here in the rust belt, the bottom of the > rocker panels go soft first usually and that bottom edge seam is always > ratty. > > The factory jack went right on up through the last two Volvo's I owned > pressed seam jacking points on the rockers and neither of these vehicles > was showing any rust. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's - Gone to the rust pile... I've often got my race car in the air with NO wheels on it. First thing you do when it's on the stands is rock the sh&t out of it. Better it falls now then when you're under it. And the first thing you should do with a factory jack is toss it in the trash and get a $19.99 hydraulic jack and stand set from walmart. NEVER work under a car held up with just a jack, especially a factory one. FWIW, I own one small cheapo hydraulic, one big hydraulic, and probably 10 jackstands. (I use 4 for storing my Trans Am in the winter and with the race car there have been times when I've needed both jacks and 6 stands - how else do you hold a rear end in place with the car jacked up? My buddy has a lift in his garage - I'm jealous. Ray
From: Built_Well on 18 Oct 2007 23:28 Noozer, you're not suppose to crawl under a car if it's only supported by a jack. Very dangerous thing to do.
From: Ray O on 19 Oct 2007 01:16
"Built_Well" <Built_Well_Toyota(a)hotmail.com> wrote in message news:1192731899.113285.29290(a)e34g2000pro.googlegroups.com... > Mike Romain wrote: >> Built_Well wrote: >> > Mike Romain wrote: >> > >> >> My last few vehicles recommend front to rear rotations, so only one >> >> side >> >> goes up with a stand under the rear axle. (more room usually at the >> >> rear >> >> for a stand)_ >> >> ____________ >> >> If they are getting crossed, then the stand goes under the rear axle >> >> and >> >> the other side front corner goes up to swap those. Then the opposite >> >> is >> >> done.____________ >> >> ______________ >> >> It is much safer still having two tires down on the ground, things get >> >> really touchy when all four are hanging.... >> > ======== >> > >> > Having only one side of the car raised sounds dangerous to me. >> > I remember reading a warning on the box of a Craftsman or Walmart >> > jack stand that said the stands should /not/ be used to lift only >> > one side of the car. >> > >> > It's okay to lift one /end/ of the car (front end and/or >> > rear end), but not one side (left side or right side). >> > At least that's what the box said. >> > >> >> None of it is 'safe'. >> >> You used to be able to lift the rear end of vehicles by putting the jack >> under the pumpkin so both back wheels came up at once. Same for a front >> crossmember. >> >> Now a days they make them so cheap, like the aluminum Dana 44 on some >> Jeeps, the rear end will collapse under the weight of the vehicle if you >> do this even when brand new! >> >> One bad jacking and the thing will never hold a wheel bearing again.... >> >> I don't jack up 'one' side at a time, I do one corner at a time with the >> vehicle in gear and the wheels touching the ground chocked. >> >> Mike >> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >> 88 Cherokee 235 BFG AT's - Gone to the rust pile... > ======== > > Thanks for the interesting discussion, Mike. > >>From the archive, it sounds to me like Ray has even had > all 4 of his tires up on /ramps/ at the same time! > > It appears he drove the front wheels up onto ramps, then > raised the rear with a floor jack and used two more ramps > and placed them under the rear wheels. > > So he has had a car up on 4 ramps with no jack stands. > Interesting. > I prefer not to lift up the car from the side, although I've done it. I prefer to lift either the front, the rear, or both. Hachi uses ramps, I use a jack. I also have ramps but don't really like them so I rarely use them. -- Ray O (correct punctuation to reply) |