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with the above said just check that there is not an o ring or a seal missing as hydraulics use compression type fittings and dont seal on the thread ,the thread only hold the joint tight .hope you can understand this as its maybe not very well described
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with the above said just check that there is not an o ring or a seal missing as hydraulics use compression type fittings and dont seal on the thread ,the thread only hold the joint tight .hope you can understand this as its maybe not very well described
This is what confuses me. Theres no fluid leaking up through the middle of the union(nut with pipe through it) so presumably the pipe is adequately sealed by the nut. Given that the cross threaded union has gone in about 4-5 mm and can't be tightened up anymore even with brute force, I can't see how an appreciable amount of fluid is coming past the thread unless I've fractured and spread the casing or something.
I assume the fluids coming past the thread as after wiping dry with kitchen towel, after 5 minutes running, theres traces of fluid around the nut/ thread again - enough to make a cup size patch on the drive after standing 3 hours.
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As the nut is not square on ie cross threaded,one side is sealing the pipe other is not.danger as mentioned is pipe may have split due to force in tightning/possibly nut cracked,you could try removing and reseating the nut back in normal possition.I have done this with some success but not all
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Steve
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might be worth slackening the nut and looking to see the pipe is bedding properly in the hole,as a rule if its flat on flat face it will have a seal of some kind if it has a taper it wont ,sometimes just a slight move of the pipe can make the faces seal.
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Many thanks for your help Defender (and everyone else)If the end of the pipe (which from memory has a rubber seal on it) isn't bedding properly surely the fluid will escape up through the middle of the nut and appear around the pipe - this area is totally dry, the fluid is seeping from the thread area.
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Is this a banjo fitting with copper washers or a compression fitting with a male threaded screw in like a larger sized brake pipe fitting. Regards Peter
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Its the latter I think. A threaded nut/ union thats loose on the pipe. Pipe has a flared end with a rubber seal. You screw the nut into the threaded hole in the casting on top of the rack and presumably it pulls the pipe up tight inside the casting.
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as long as you have not done any major damage to the threads just slacken it of and seal it with plumbers thread tape
If you mean PTFE do not use it for this,it will dissolve into a gungy mess in no time.I would suggest undoing the union and using a tap and die to realign the threads.
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