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Somewhereville, Earth | don't worry about air, it will work its way out in opperation, thats not the ideal answer, but it does, and 95% of the hoses i replace (dozens daily), just hydrostatic lines you sometimes have to watch, cleaning hyd lines you can do what ever way suits ya imagination, the best way is a air operated plug pusher, that pushes foam plugs through em. petrol and brakeclean, all though won't immediately hurt hyd lines and rubber, it actually will break it down, so try not to use a cleaner that is too agressive
if you can take the hoses of the cylinders and a pin out of one end, and work the oil out of the cylinder, that works,
or take one hose off one end, and push oil out of the tractor into the other end, then put the other hose end, and take the first one off.......you will loose a bit of clean oil from the tractor , but you will work most of the oil out of the cylinders
have used a bit of diesel to flush trash/fillings from cylinders before too
i guess the true professional hyd person restonse is sorry sir you need to strip the cylinders down, replace them, and replace the lines, lol....but wheres the fun in that, now if you want to put oil into the lines when you re assemble, a sludge gun works and a loose hose at the other end,
make sure the chrome on the shafts is in good nic before moving the cylinders if the machine has been sitting, rust can stuff seals fast, light rust spots on chrome shafts can be sorted with those green pot scrubbers and a bit of water if ya patient | |
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Purging hydraulic systems
