comes in 3's

[johnakay]

thats what they say.
1st wrong item sent and now this.
I bought a 20 Ton Hydraulic Air Bottle Jack and guess what the thing doesn't work.
all I'm getting is click click.done as instructed.
now I'm not sure if my compressor pumps enough air out.
115 psi max - 6.3 cfm
52cfm @ 40psi if that make any sense.
the jack ...air pressure range 0.8-1.2
https://www.ebay.co.uk/itm/20-Ton-Hydraulic-Air-Bottle-Jack-Pneumatic-Lifting-Stand-Ram-Car-Van-Truc k-Lorry/323876785302?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

 

[Matchless]

Is the valve shut at the bottom front? does it work if pumped by hand?

 

[johnakay]

valve is shut and work with hand pump.
I wouldn't of thought I need to put jack oil the big bottle?
never did on ordinary bottle jack.
the instruction isn't clear on this other that stating oil must over flow the hole?

 

[Nick DV]

Are you getting air through the lift valve? Did you have to connect the lift valve and associated hoses? If so, were there any small plastic caps in the openings that may need removing?

 

[johnakay]

it came all assembled .
I removed the lift valve to put a little bit of jack oil in and re assembled.
what I didn't do is fill the bottle up to the rubber plug hole.
maybe that might be the cause of it not working.
so I'll check tomorrow.
the instruction doesnt mention putting oil in but does say ensure the oil level is below the plug hole.

 

[Nick DV]

Fingers crossed you sort it

 

[m_c]

Are you sure this jack will lift a load with air?
Looking at the pictures on the ebay listing, the chamber at the back for air looks like a basic air over hydraulic cylinder, which would suggest the air is only for the initial extension, then you need to use the manual pump.

Have you tried the jack standing on it's own?

 

[johnakay]

this how it work

 

[Matchless]

I had a foot operated air / hydraulic pump for my 20ton portapower kit at work, that would pump all the way to max using air, in fact it only had air, no manual system. sounds like you may have air in the oil lines or not enough oil in the system, the ticking will be the pump operating,

 

[Wallace]

When you press the air valve, can you hear the air cylinder cycling back and forth?

 

[johnakay]

I dont have very good hearing.its trying. probably need oil in the plug hole .
I'll do that tomorrow.

 

[Wallace]

They are quite simple in operation. All the air cylinder does is cycle back and forth when air is applied and does the same hydraulic job as the hand pump. If you put something solid in the press and pump by hand to see if it loads up that will prove the manual side and jack. Air wise it will work OK off your compressor if it is getting up to pressure.

 

[johnakay]

put some oil in up to the level of plug hole.
still not working.
pump is fine.
I even put a plate under the jack and pump it till it wont pump no more and does return unless I release the valve.
quite possible there'll be an air lock in it some where.
my son is a trained pump tech amongst other things .
so I'll ask him to have a look.

 

[Hopefuldave]

Sounds like either there's air in the air-over pump where there should be oil (and it needs bleeding, don't ask me how!) or the air-over is faulty - as far as I can tell from looking at an exploded diagram there's no valvery between the air-over "output" piston and the hand pump piston - the output piston just shuttles oil back&forth like the hand pump, the usual check valves (balls on seats (ooer Mrs)) translate that into pumping?

Diagram I found was in:
http://pdfstream.manualsonline.com/e/e816d5b6-a3bc-4531-82f7-43d4ff8c7a47.pdf
Page 11 is the air-over, parts list doesn't mention balls for valves...

My guess is they're all pretty much identical (same factory in China?)

Dave H. (the other one)

 

[johnakay]

cheers Dave theres more info on that than there is in my booklet.
just printed it all off .thanks

 

[Hopefuldave]

OK, a quick test, if you can't hear the air-over working can you feel air pulsing out of the vent on the side of it? it shold be a few pulses per second if it's shuttling the air piston (A09 in the diagram).

I was planning to buy one of these when I get the Circular Tuit, be good to know they work...

Dave H. (te other one)

 

[johnakay]

what do you call this type of spring? tension spring?
looking ebay all look weak.
the b/jack is heavy so I need to fit 2 extra ones one.
at the mo its seems flimsy.

 

[Seadog]

Tension.

 

[Hopefuldave]

what do you call this type of spring? tension spring?
looking ebay all look weak.
the b/jack is heavy so I need to fit 2 extra ones one.
at the mo its seems flimsy.

In my case, I have a stock of trampoline springs...
Watch Freecycle for a trampoline being given away?

Dave H. (the other one)

 

[johnakay]

thats what I had on my other press.still got them. thanks