 | Home > Maintenance & Modifications > Jacking up maximum height using Hi-Lift type jack? |
 
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11240   
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Safety in this scenario is very much a relative term
 , but in theory all the way to the top of the jack. Be damn careful though. Darren
110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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30th Sep 2011 11:58pm |
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| MrFlips Member Since: 27 May 2009 Location: Cardiff Posts: 682  
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As a nosey neighbour, seeing you walking towards your car with two high-lifts would make me rub my hands together with glee thinking this is going to be a bloodbath!
Do you have massive suspension travel, or do you just want the axles really high up? Peter 2008 SWB Truck Cab 1952 80" Soft top |
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1st Oct 2011 12:06am |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2109  
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Mermoto
I will not do that for a long time. In my case one of the holes in the rear members fails 2 times changing a flat tire, leaving the car very unstable. So I bougth a bottle jack instead. Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo"  Click image to enlarge |
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1st Oct 2011 12:08am |
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| leeds Member Since: 28 Dec 2009 Location: West Yorkshire Posts: 8578
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Hi lift jacks and safety?
Using two high lift jacks and axle stands suggest that you intend working at home. For home use a 3 tonne trolley jack with high rise, decent size saddle and a good footprint. Otherwise a good bottle jack. High lift jacks are at bottom of list for working on vehicles. If you must use them learn how to use them 'safely'. Learn how to restrict suspension movemnt. Makes life a lot safer Brendan |
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1st Oct 2011 12:42am |
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| BigMike Member Since: 13 Jul 2010 Location: Lancashire Posts: 2253
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I agree with Brendan but say that hi lifts shouldnt be used at all, ever, for working on vehicles. thats not what they are designed for.
so at home, trolley jack then axle stands. leave trolley jack in place but sloly release the weight to the axle stands and use the trolley jack as a safety device. |
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1st Oct 2011 8:17am |
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| leeds Member Since: 28 Dec 2009 Location: West Yorkshire Posts: 8578
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By design, high lift jacks are inherently unstable!
A 2-3 tonne vehicle lifted at one end on to the top of a 4 or 5 ft rack which has a base with a tiny footprint of say 4 x 6 inches with no side supports? That is a recipe for instability. Small movement at top of rack takes load outside of base footprint. Result.......???? Give the rack a 'hinge' as the connection between rack and base and inbuilt. Stability is out of the proverbial window! This instability gives the high lift jack the ability to 'cast' out of ruts. IMO the high lift jack is a much over rated bit of kit. Brendan |
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1st Oct 2011 9:38am |
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| Green Machine Member Since: 19 Nov 2010 Location: North Yorkshire Posts: 1226 
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I've never lifted a vehicle onto axle stands, but always thought that this is the way you would do it - with a trolley jack. I have always wondered though where you would locate the jack and the stands? Presumably you really want them both in the same place, which is obviously impossible. Also, what is the correct technique for lifting the whole front, or rear, axle onto stands? Do you need to use 2 trolley jacks? Once one side of the axle is on an axle stand, it doesn't seem too safe to then lift the other, allowing it to hinge on the stand already in place? As you can tell - I have no knowledge of this and it is something I've wondered about in the past. 2005 Td5 | 90 Station Wagon | Tonga Green |
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1st Oct 2011 10:36am |
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| Bobble Member Since: 21 Aug 2011 Location: Hampshire Posts: 223
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Two trolley jacks is the way forward for a two-wheel lift.
Failing that, just about the safest way is to lift either end of the axle (by whatever means) just enough to raise the axle stand to its next stop/latch/pin hole or whatever, lower the weight on to that, then raise the other end of the axle likewise, so it goes up in the smallest stages possible keeping the axle as horizontal as possible through out. I have no issue with a Hi-Lift by the way, and can't see what all the fuss is about. The jacks aren't dangerous - people are. If mermoto wants to lift his car that way, who are we to say he doesn't know what he's doing? |
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1st Oct 2011 12:37pm |
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| paulnb57 Member Since: 18 May 2011 Location: Isle of Wight UK Posts: 38 |
Dont do it - it will end in tears! Hi lifts are incredibly unstabe and 2 side by side - oo noooooo!
Use a trolley jack and go up a bit on each side and support on an axle stands........... Paul |
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1st Oct 2011 12:40pm |
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| Happyoldgit Member Since: 14 Sep 2007 Location: Norfolk Posts: 3471 
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Scary Steve.
Owned numerous Land Rover vehicles of all shapes and sizes over the decades. Current Defender: A non tarts hand-bagged Puma 110 XS USW. [Insert something impressive here such as extensive list of previous Land Rovers or examples of your prestigeous and expensive items, trinkets, houses, bikes, vehicles etc] http://forums.lr4x4.com I used to be Miserable ...but now I'm ecstatic. |
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3rd Oct 2011 2:07pm |
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| Bobble Member Since: 21 Aug 2011 Location: Hampshire Posts: 223
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Yer know, the more I think about it the less dangerous this scenario seems.
The general assumption appears to be that the vehicle would be lifted as high as possible on the Hi-Lift(s), then have the axle stands inserted. If it were raised incrementally, raising the stands to support the axle as it went, I can't really see a problem since the Hi-Lift would only be lifting the vehicle an inch or so at a time. I can't see a need for it as such, but at the same time it doesn't strike me as the route to a early grave that everyone seems to think it is. |
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3rd Oct 2011 2:15pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5438 
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They would have to lift it a certain height before being able to get axle stand under there.
They will have to go under the vehicle many many times to keep adjusting the stands. When a vehicle falls off a high lift jack it goes sideways, not just down, so little chance of landing on the stands, if it goes wrong. If I was raising vehicle with pair of high lifts, I would like one person on each, and operate them together. I would go from the ground to the required height in one movement, so as only need to go under the vehicle once, and if it does fall off the jacks, I don't end up with an axle stand stuffed through my floor, or fuel tank. But would much prefer a trolley jack Oh and make sure diff locks, and in gear, Andy |
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3rd Oct 2011 2:36pm |
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| mermoto Member Since: 21 Sep 2011 Location: Essex Posts: 326 |
Bobble seems to have the idea I was getting at. Two jacks in place using the adaptor, chock the wheels at the other end and jack it up a few clicks at a time each side. Move the axle stands up as you go. I am suprised that no one has come up with a jack system that uitilises both holes simultaneously with some sort of box section joining the two and a central jacking point for a heavy duty jack. Click image to enlarge Mermoto |
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3rd Oct 2011 2:37pm |
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| markb110 Member Since: 22 May 2010 Location: Guildford Posts: 2537  
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Hi Mermoto
I believe that Hi Lift did have a divice in the past that allowed a stable base and two feet to sit under a squared bumper. A single Hi Lift was then used centrally to move the unit and hence the front of the car upwards. From looking on the web i can't seem to find it. You picture is a similar idea but using a trolly jack The main issue that you have is that you are in effect jacking up the chassis/ body long before the wheel will leave the ground. Based on the length of your shocks it can be frightening. On my last 110 (lifted / longer shocks) i could get the wing up to my shoulder before the wheel would lift off the ground - let alone any higher to use an axle stand or god forbid get underneath it. If you tried this on the back the opposite spring (again my last 110) the opposite spring would not compress enough and hence the back end would skip to one side as the jack fell over. Magazines dont help as i have seen numerous pictures over the years where the owner has left the jack handle in the horizontal position and not verticle. As the others have rightly said these can be dangerous if used incorrectly. There is no reason at all to put yourself in a dangerous position - we need you in one peice on this forum 
Buy yourself a good trolly jack - its coming up to Christmas so worth checking Halfords as they may have some deals coming up. My 3 tonne jack came from Sealys years ago when they had a summer reduction. In the car a keep a bottle jack if i need to change a tyre, the Hi-Lift only goes in for green lane trips and has only been used for moving large branches and burnt out cars out of the way. Good luck with your chosen method Rember hindsight is something you learn after the event 
Mark |
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3rd Oct 2011 3:59pm |
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