Forum Discussion
JRscooby
Jul 30, 2021Explorer II
JIMNLIN wrote:
Interesting theory.
My 12t shorty hyd jack has non of your limitations you mention.
And my trailers (rv and commercial) axles don't travel in a big enough arc to be any kind of a issue.
This old jack is heavy and made all 1.2 million miles when I was towing for a living. It also been in three different 5th wheel rv trailers with countless thousands of miles for over 30 years.
Guess we have differing experiences with hyd bottle jacks.
Let me see, are you saying in all the times you have used your jack you have never put it in position, started to lift the load, then "oh snot" let it back down, and changed position to try again? I think it is often the arc putting side pressure that caused this.
Think for a minute. You and I have had enough experience doing this kind of thing, that while we are doing it we don't even think about why it is going wrong, we just stop and regroup. But we are not looking for info on what is the best size/brand of the wrong kind of jack to get. Now, sitting on the couch, trying to pass on experience thru a keyboard, without knowing anything about the skillset of the reader, I try to show what can happen/what to watch. And most important, the need to watch.
As for jacks leaking; Truth be told, old jacks unless abused are less likely to leak. That is why if I needed to say push a bin with 16+ tons of rock sideways I grab the 2 20 ton China made units because I don't want to put the side pressure on the good ones.
Cummins12V98 wrote:
Would someone explain why they would not use a TrailerAid or stepped wood blocks???
Not sure how you get a shorty bottle jack under the axle with the tire flat causing the axle to hang low.
If you suspension has a lot of travel or wide spread, it can take a lot of blocks under 1 axle to get the other off the ground.
I'm sure others have their favorite methods of raising a tire off the ground...but it don't worry me how others do it. Just get'r done.
This brings up a point; In the dark or rain, with traffic rolling by, is not the best place to go to school.
A nice day, in your driveway, (or better yard so you understand about soft ground under where working) change a tire. Know what doesn't work on your setup.
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