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A 997 up on 4 axle stands?

annaandjohn1

annaandjohn1

New member
Hi
Has anyone ever put their 997 on 4 axle stands? Mine is currently on two axle stands at the rear wheels, but when I went to buy another pair of axle stands there was a warning on the packaging NOT to use more than one pair?
Does anyone know what the problem is with having all four corners on axle stands?
I would be grateful for any views.
Regards
John McCulloch
 
How do you intend to get the four wheels onto the axle stands? I can see how you could do two but what happens then, would you not need to lift the other end up and put the stands underneath?

Or if you tried to drive up on all four you would not be able to get them underneath the car for the back end? Or some of them may be pushed out of the way by the power/weight of the car?

Or did I miss something?

David

 
As far as I can see,whether you do a side at a time or front & then rear(or vice versa),the imposed loading on the jacked up side/end tends to rotate the stands even if the trolley jack rolls freely & the stands are not designed to take those loads -they are designed for compression loads only.

Personally ,I would always drive onto ramps at the front then lift the rear so that the wheels take the rotational force with the trolley jack rolling towards the front as it lifts-I presume the car can be lifted using a plate under the engine to spread the load,otherwise lift each rear end side at a time although this has a rolling action on the stand.

The lift the front at the centre to insert front stands.

No animals or humans were hurt in this research!
 
Yes, I agree. Jacking up the front whilst the rear is supported on stands is a recipe for disaster.
Use ramps on the front and chock the front wheels to prevent it rolling back, then raise the rear onto the stands. I usually do this one side at a time and in small increments to prevent toppling.

It's good practice, even if you're not intending to work underneath, to place a buffer under the car, a couple of old car tyres roped together one on top of the other is ideal. There is constant temptation to reach under the car for a dropped spanner or recalcitrant nut and bolt and this is a safety measure in case the car becomes unstable.
Regards,
Clive
 
Hi all
Thanks for your replies. It seems that putting all four corners on axle stands is a potentially risky thing to do. I'm glad I asked the question before potentially causing myself a serious problem.
The front wheels are chocked while the rears are on the axle stands, and the reason for all this is cleaning wheels and calipers and checking on tyres and brakes.
My rear tyres are likely to need replacing very soon because they are showing 3mm of tread and with a 911, I would have thought that going to the legal minimum of 1.6mm would be very bad move.
Regards
John McCulloch
 
John,
Do one side at a time. A decent trolley jack under the rear jacking mount (see our technical section to find where that is) will lift the car sufficiently high to remove both wheels on that side (but loosen the wheel bolts first!). [;)]
Regards,

Clive.
 
I lifted my Boxster on to 4 axle stands. back first, then the front, then raised each corner a little at at a time until I achieved the height I was looking for. however the Boxster is mid engined and the balance is better; I have a 993 for which i have not yet worked out how to raise it, but I will probable use a combination of axle stands and ramps.
regards
john
 
I do exactly as Clive says every year to clean and wax the wheels, clean the calipers and inside the wheel arches. It works really well and does not feel unsafe - but I do still put something underneath in case the worst happens.
 
I went for the Garage Car lift and take the weight off all wheels for the winter! E-bay item: 121773479335 Highly recommended, i had to put two scaffold boards each side to gain the ground height for the 997 to get up and over but this way I can park the car over the lift when its not in use or required. It is a heavy bit of kit though and not easy to move around on the floor but once positioned it doesn't really need to be moved again.....until you move house :)


Car%20Lift_zpsxz9qyl2o.jpg


 
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