Reply With QuoteSo what are the specs on the bottle jack and what make is it,,,, looks great on the right side.... Very neat !,,
Master
My OEM Scissor Jack died last week, and despite the possibility of the Merc Sprinter alternative Replacement Jack - Group Buy which sadly didn't pan out, I could't even wait that long. I needed to find a solution in a hurry.
Here are the measurements of the ground clearance to the underside of the D3 chassis (extended height mode) that I took in working toward a solution.
- clearance when all wheels are at road pressure = 280mm
- clearance when one tyre is completely flat = 240mm, less 10mm just to be sure = 230mm. This is the amount of room you've got to put a jack under the car -
- an estimate of how much extra clearance is needed to put the inflated spare on the wheel hub (120mm).
- Giving a total jacking height clearance needed of 400mm.
These measurements above are what I worked out for my D3 sitting in the carport. You may come up with different numbers. (I also stuffed around trying to work out a theoretical ground clearance with a flat based in tyre dimensions, this is before I decided to just let all of the air out of the tyre)
Using these measurements I looked up details for about 15 different Jacks - Some mentioned previously on this forum.
The five key characteristics for a jack being:
1. The jack fits under with a flat tyre
2. The jack's lift , or stroke (without the use of any screw extensions) will give the wheel enough clearance to get the spare on.
3. The jack's load rating
4. The size and weight of the jack - It's got to be practical to fit in the car.
5. Price
Here's a spreadsheet that examines a number of jacks. Feel free to play with this and make improvements. You might come to a different conclusion than I did.
Jack-D3-2013-08-18.xlsx
According to my analysis, the best bottle jacks for a D3 are the ones made by Weber Hydraulik in Germany. Both the 3 Tonne and 5 Tonne have double pistons, with a very long strokes. It's no surprise that the Merc Sprinter Jack is thought to be good also. It's made by the same firm. Weber's Australian rep is PTHydraulics in Melbourne, but they don't import these jacks. These Jacks are not available in Australia as far as I can tell.
The Toolex 12 Tonne Jack, double ram has the stroke - but it's a heavy unit at 12kg, and I'm not sure how it tucks away in the car. - It's available from Gasweld
The Torin 4 Tonne double ram Jack - comes very close - but misses out by a whisker with the piston stroke. However it's not available in Australia - You can buy it from the US on ebay - but freight is the killer.
Most of the other jacks I looked at are single piston jacks, and these don't have the stroke that the double rams achieve.
However as I said I needed to find a solution in a hurry.
In the end I bought two jacks. I purchased a 4 tonne and 2 tonne jack from Supercheap Auto. The 4 Tonne were on special (still are I think). With both these jacks I can achieve the height. The 4 tonne jack has the height when the screw extension is used. The 2 tonne Jack will lift things up enough to slip the 4 tonne jack under with the screw fully extended. Then the 4 tonne will take it the rest of the way.
Each jack is on its own small enough and light enough to tuck away in the car. I put the 4 tonne jack where the old scissor jack was stowed.
4-tonne-jack-in-place.jpg
I put the 2 tonne jack on the other side. Tied down with some shock cord onto some shackles that I fitted and enough foam jammed around it to stop things knocking.
2-tonne-jack-in-place.jpg
It's not ideal - but it's a darn sight better than where I was last week. Sure it'd be better to have a Weber 3 or 5 Tonne jack - But I shudder to think what they'd cost to fly in.
Master
So what are the specs on the bottle jack and what make is it,,,, looks great on the right side.... Very neat !,,
Master
You can see the specs for all the jacks I looked at in the spreadsheet in my post above. Just download and open in excel.Originally Posted by herrBlick
The supercheap jack specs are:
4 Tonne, 214mm to 430mm (Lift 140mm) ~4kg
2 Tonne, 183mm to 352mm (Lift 115mm)~3kg
They get them made in China under their own brand, however I think they,re identical to the Orcon jacks sold by Autobarn.
The right hand side jack fits nicely in the styrofoam stowage area after a bit of careful work with a Stanley knife. The left hand side is much harder to do neatly. There's not much there to work with. Not even a platform to sit it on.
Master
Awesome thank you.
Do you think you need two?
Master
That's what I figured. My calculations indicated that the 4 tonne didn't have enough lift to do the job on its own. The thing is you need to be able to get the 4 tonne jack under the chassis (with a flat) with the screw fully extended. Only then will it raise the car to the height necessary.
A note of caution though. I haven't changed a wheel with this setup yet. (Although I have jacked the car up and it gives the clearance) but actual practice may result in an change of opinion, or the need for some judicious placement of wood blocks.
Anyway I took the safe option and got two. If your OEM scissor still functions then you can use that to get the lift started if you need it.
Master
I have been talking to my local mechanic and what you have to consider is that your not lifting all the car, so he thinks on jack should be enough. I have changed out the the spare wheel with the scissor jack and it was ok on flat ground, enjoying action though....just wondering what is men't to be on the left hand space as mine was empty but some foam and strapping was there?
Wizard
SupporterOn the passenger side is for the tow hitch, UK style one.
2014 SDV6 HSE - LLAMS, Tuff Ant Tree Sliders, Tuff Ant 18" rims, Nitto Ridge Grappler tyres 265/65 R18, Custom Lipo4 battery, Custom Drawer storage system https://www.box.com/s/jem0ilac3cner2mexq64
A Keeper of the TGO
BSM is saying that you need two because the smaller one is too short to provide the clearance to change the tyre and the tall one is too tall to get under the chassis when the tyre is flat. So, you need the short jack to lift the car enough to then fit the tall jack under to finish the lift.
Cheers,
Sean
“Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.” - Albert Einstein
ChatterBox
So how much more distance is need for the 2 ton jack to be high enough?
Master
OIC. I understand now
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