Hydraulic scissors jack
Submitted: Thursday, Sep 15, 2005 at 13:24
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Member - Willie , Epping .Syd.
Howdy all ,
Have any of you guys or gals ever used one of these jacks on a large 4WD . They seem to be a low height when closed , so it would slip under the car easilly when you had a flat .
If they are suitable for a large 4WD , could you let me know a brand , or where to buy them .
I am not sure what the strength a jack should be able to lift to be suitable for a large loaded 4WD- can someone let me know please .
Thanks ,
Willie
Reply By: V8troopie - Thursday, Sep 15, 2005 at 15:08
Thursday, Sep 15, 2005 at 15:08
Willie, you got me curious now, I never have seen a hydraulic version of these jacks, only the screw type mechanical. It would require a horizontal ram for the hydraulic version.
The design is simple enough but it is not efficient at low heights, the way the leverage works you get maximum efficiency when the jack is near its full heigth. So it would have to be a brutish design to cope with a big 4WD's weight.
What I do on my troopy is to lift the flat wheel with the high rise jack from a steel tube that fits over the bearing housing. Once the wheel is up high enough I place an ordinary hydraulic jack under the axle and remove the hi lift to change the wheel. Most times there is enough room to let the new wheel down on the hydraulic jack, if the car stopped on a shoulder I reverse the high lift jack procedure to get the wheel back on the ground.
Klaus
AnswerID:
130242
Follow Up By: Member - Willie , Epping .Syd. - Thursday, Sep 15, 2005 at 16:45
Thursday, Sep 15, 2005 at 16:45
Klaus,
My mate uses the combo of the two jacks like you , but it seems crazy to me - there must be a better way !
I really don't want to carry a high lift jack - they are just to heavy . There must be another way around the problem of getting a jack under the car .
Thanks for you input ,
Willie .
FollowupID:
384718
Follow Up By: Member - Davoe (Widgiemooltha) - Thursday, Sep 15, 2005 at 21:37
Thursday, Sep 15, 2005 at 21:37
It is quite simple to change tyres with the standard jack. If you have larger tyres you may need a jacking block (a jacking block makes the job easier anyway). With a dead flat tyre there is loads of room to fit the jack under the axle (with leaf springs you need to have the jack between
the springs and diff) The jack will not reach the axle until it is about 1/2 unwound. There is enough travel left in the jack to jack it up far enough to get the tyre off and on with standard tyres but the job would be easier and essential if running bigger tyres to use a block of wood a few inches high underneath. If in sandy ground a hole can be dug to get the jack under the low parts of the
suspension. If in rocky ground a rock can be placed under the offending wheel and driven onto again giving access to low parts of
suspension (last 2 ways or using the block save alot of winding but it all works)
FollowupID:
384751
Reply By: Member - Geoff M (Newcastle) - Thursday, Sep 15, 2005 at 18:06
Thursday, Sep 15, 2005 at 18:06
Hello Willie,
I carry a piece of 6" x 4" treated pine about 12" long.
If the whole show is so flat the jack won't fit, I just drive the flat wheel up on to it and then shove the jack under.
The obvious flaws are sand, steep slopes. Anywhere you can't move until the tyre has been changed. Then it's the highlift like Klaus mentioned.
Don't know if this helps,
Geoff.
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AnswerID:
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Follow Up By: Member - Willie , Epping .Syd. - Thursday, Sep 15, 2005 at 20:02
Thursday, Sep 15, 2005 at 20:02
Geoff,
That is a bloody smart thing you do and it's so simple I can't help asking myself why I never thought of it . I will fashion myself some kind of ramp .
I have been struggling with this problem for two years and I cannot thank you enough .
Cheers ,
Willie
FollowupID:
384737
Follow Up By: Member - Geoff M (Newcastle) - Thursday, Sep 15, 2005 at 21:37
Thursday, Sep 15, 2005 at 21:37
You know Willie, that's the true power of this
forum.
Next week you'll post something, I'll look at it and say, "Willie, you are a genius. I'd never have thought of it myself."
Anytime,
Geoff.
| Geoff,
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Reply By: Member - MrBitchi (QLD) - Friday, Sep 16, 2005 at 09:58
Friday, Sep 16, 2005 at 09:58
FWIW, the scissor type mechanical jack would easily lift a 4WD. I have one in the Statesman (standard equipment) and it has no problems lifting the front end of that (5Lt V8).
In fact, when you position the jack to change the rear tyre (correct position is under the B pillar) it actually lifts both front and rear tyres of the ground at once!
Cheers.....
AnswerID:
130380
Follow Up By: Member - Willie , Epping .Syd. - Friday, Sep 16, 2005 at 10:27
Friday, Sep 16, 2005 at 10:27
MrBitchi,
But that is a wind up jack and I really need to know about the hydraulic type .
Thanks ,
MrWillie
FollowupID:
384830
Follow Up By: Member - MrBitchi (QLD) - Friday, Sep 16, 2005 at 10:30
Friday, Sep 16, 2005 at 10:30
As V8Troopie said, never seen an Hydraulic version :-(
FollowupID:
384832
Follow Up By: Member - Willie , Epping .Syd. - Friday, Sep 16, 2005 at 11:33
Friday, Sep 16, 2005 at 11:33
John ,
Just Google
hydraulic scissors jack
Cheers ,
Willie
FollowupID:
384850
Reply By: Truckster (Vic) - Friday, Sep 16, 2005 at 10:39
Friday, Sep 16, 2005 at 10:39
most scissor jacks wouldnt handle a 3+ton 4b..
AnswerID:
130390
Follow Up By: Member - MrBitchi (QLD) - Friday, Sep 16, 2005 at 11:42
Friday, Sep 16, 2005 at 11:42
I beg to differ. As I said the Holden one easily lifts one side of my Statesman. To change a flat tyre you only need to lift the weight of that corner of the vehicle.
I'll check the load rating of
mine over the weekend.
Cheers....
FollowupID:
384854
Follow Up By: Patrol Freak (NSW) - Friday, Sep 16, 2005 at 12:00
Friday, Sep 16, 2005 at 12:00
A loaded 4x4 would be a little bit heaver than a statesman. scissor jacks are prone to collapse under heavey weights.I would use a squat bottle jack with adjustable ram.
FollowupID:
384858
Follow Up By: Truckster (Vic) - Monday, Sep 19, 2005 at 16:26
Monday, Sep 19, 2005 at 16:26
yea thats what I was gettin at, loaded 4b V statesy..
but then again, you are also as you state lifting 1 corner...
if an airbag jack can do it....
FollowupID:
385257
Reply By: Willem - Friday, Sep 16, 2005 at 14:06
Friday, Sep 16, 2005 at 14:06
I carry a small 1.8ton trolley hydraulic jack. Works
well and easy to use jacking up the GQ. Thinking of taking the
wheels off and putting a skid plate under it. The jack fits behind my front
seat.
AnswerID:
130418
Reply By: angler - Friday, Sep 16, 2005 at 20:04
Friday, Sep 16, 2005 at 20:04
In one of the early Tojo handbooks it statec how to change a flat tyre.
Put the spare on the ground and drive the flat tyre up onto the spare. Place jack under spring and jack up vehicle. When high enough remove the flat tyre and replace it with the spare.
No blocks required and plenty of room under the truck for the jack.
I have done this a coulple of times with every success.
AnswerID:
130455
Follow Up By: Member - Howard (ACT) - Sunday, Sep 18, 2005 at 21:48
Sunday, Sep 18, 2005 at 21:48
angler,
thats because totota know that the standard jack is to high to fot under the diff housing when the tyre is flat and are too tight to supply a jack that will.Its always a ereace whenever I hear air escaping to grap the jacxk and get it under the truck before the tyre goes to flat otherwise its out with the shovel.
Maybe we should write to toyita and tell them about 3 stage jacks
cheers
Howard
FollowupID:
385183