SeanStone
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| posted on 12/4/12 at 10:45 AM |
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Hydraulic Fluid
I went to use my engine crane over the easter weekend and it wouldn't work (only got it last April), so I presume I'm in need of replacing
the fluid
Is there any particular fluid I need? Or will the standard stuff from Halfords/Machine mart (if they do it) do the trick?
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designer
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| posted on 12/4/12 at 11:02 AM |
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It's standard stuff.
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Daddylonglegs
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| posted on 12/4/12 at 11:38 AM |
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Sorry to hijack, but I have similar trouble with my trolley jack. Seems to pump up then go straight down again. Would it be seals or just knackered?
(it's quite old).
Ta,
JB
It looks like the Midget is winning at the moment......
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itsawindupuk
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| posted on 12/4/12 at 12:00 PM |
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i had a similar problem with one i got off ebay. A made in china job. Seals were knackered before it was out the box, but also they sometimes need
bleeding. Basically open the valve (release), and pump. It should get rid of the air. Then close and try it. I have to do it a lot with my old trolley
jack as air gets into it.
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JeffHs
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| posted on 12/4/12 at 12:59 PM |
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A hydraulics specialist told me that often the problem with trolley jacks is a bit of muck stopping the seal from seating. He suggested the first
thing to try is to stand on the axle and then pull the jack open by hand fast. This pushes fluid backwards and can shift the muck.
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Chippy
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| posted on 12/4/12 at 03:32 PM |
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I have a "very" slight leak on my trolly jack and just needs topping up with ATF about once a year. Always works, but just loses a slight
amount, have never needed to bleed it. HTH Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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laptoprob
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| posted on 12/4/12 at 03:46 PM |
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Its a very basic single acting cylinder and nearly always is down to seals being worn or broken.
Other cause is pitting on the chrome which obviously kills the seals.
Any std hydraulic oil will be fine.
http://www.youtube.com/watch?v=ajlF4nWJtGA
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dhutch
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| posted on 12/4/12 at 04:39 PM |
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Halfords do a 'Jack Oil' dont know if its any good or not, but cheap enough on trade and works in my jack. The jack says on it 'use
clean sae 10 grade oil' but it was made a million years ago.
Daniel
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