Thread: New Jack For Discovery 4

Originally Posted by d3syd

It is just a cheap one from Super Cheap Auto. Made in Japan though, so quality is pretty good. The brand is "Masada" and it is rated for 2 tonnes. They had a few others with different lift capacities in the store.

Wanted to reopen this thread with a quick question - what should be the minimum lifting capacity of a jack with the D4 (3.0SE, if it makes any difference)? I know the car is 2.3 tonnes unladen, and if only lifting using the standard jacking point for tyre changes etc, then not the whole load of the car is on the jack.

Is 2 tonne enough?

Also with the extension required, can one just keep the door open to prevent the air suspension from self lifting higher?

As with the other posts, I claim it takes two jacks to change a tyre easily; one to lift on the frame and carry the weight of a corner, and the second jack to lift under the A arm to get the rubber off the road. An air bag jack is actually the best alternative and only one is required.

Stability is my concern, particularly of the jack lifting the frame. A two tonne bottle jack would probably lift one corner of the frame but it would be working hard. I use a 3 ton trolley at home and a 6 tonne bottle on the road with a piece of wood set under the bottle jack to hopefully add stability. It does but it does not look very pretty however and stability is always a question. Chocking the other wheels is very necessary.

The jack under the A arm is a baby bottle jack; looks like it might be good for 500 pounds on a nice day but rated at 2 ton per my previous post.

My belief is that you cannot be certain under any circumstances that the air will not let go from the air springs.

When preventing an air release really matters, on my 3, I pull the F26E fuse or disconnect the battery. I assume the D4 has a similar fuse that depowers the air suspension computer and hence removes the ability of the exhaust valve to power up and release any air under any circumstances.

Originally Posted by Peter

So I noted a few hieroglyphics on the jack and it suggested raising the suspension first and using the scissor jack at specific points.

Absolutely. Raise the suspension, leave a door open, use the jacking points in the chassis rail.

I carry a 2 stage bottle jack I got delivered from Gasweld. Have a look at this thread. Note the attachments I had made on page 2.

http://www.aulro.com/afvb/d3-d4-rrs/...ttle-jack.html

Originally Posted by CaverD3

I use an exhaust jack and a car stand for safety.

Obviously changing tyres and recovery jacking are totally different things, and good practice for tyre changing is to at least have the extra wheel under the sill for backup...

On a flat hard bit of ground the OEM jack'll be fine... What do ppl think of the exhaust jacks compared to hi-lift jacks for recovery work?

These electric scissor jacks are effective:

Camping/Trailers | Accessories | KCI Electric Scissor Jack for 4WDs | 4WD WORLD - A World of 4x4 Accessories & Suspension Information

Note though, it won't quite fit under the chassis if you're down on the bump stops - you'll still need the LR jack for that.

Cheers,

Gordon

SELSON AIR JACK

Has anybody have or use one of these jacks?

There is a 2.5t with 465mm lift with various accessories available.

For emergency use in offroad environment these appear to be a viable alternative to me. Particularly since most off roaders carry an aircompressor, the jack has a reasonable "foot print" and is flexible enough to move off axis as the vehicle is raised.

I'd be interested in any comments


Air Jacks*|*TES - Air Spring Specialists, Industrial & Automotive Airsprings

I appreciate you finding that style of jack and writing it up. I had never seen anything like that before - have seen the air spring on lots of trucks, but have never seen an air spring used that way - well maybe for building and equipment lifts but not solely as a bottle or trolley jack replacement.

As for bush use, I think I would continue with the exhaust bag jack as it supports well in bad ground conditions and does seem seem to care where you place it under the vehicle - other than on the muffler or exhaust pipes.

For shop use, I have a trolley with one of those pin adaptors that fits into the under frame hole that Land Rover provides. I do see that the air spring jack has optional "tops" so I suppose one could rig up one of those pin adaptors oneself.

I guess I see the air spring jack as a more elegant trolley or bottle jack replacement for the shop, but a bit "un compact" and I perhaps heavy for trail use.

Originally Posted by AGRO

SELSON AIR JACK

Has anybody have or use one of these jacks?

There is a 2.5t with 465mm lift with various accessories available.

For emergency use in offroad environment these appear to be a viable alternative to me. Particularly since most off roaders carry an aircompressor, the jack has a reasonable "foot print" and is flexible enough to move off axis as the vehicle is raised.

I'd be interested in any comments



Air Jacks*|*TES - Air Spring Specialists, Industrial & Automotive

Airsprings

Yes, we have one in the workshop. I think you will find that the general automotive 12 volt compressors, will not have enough grunt to use them as a practical jack. It would be worth checking that side of it out before investing in one. The inflation controls are simple push buttons, and with high air pressure can be a problem to adjust if you are looking for fine movements. That may actually be ok with lower pressure. ( if it works ) I will have to try it out on 12volt.