Steering hose leaking at pump

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Grrrmachine
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Post Sat May 04, 2013 6:11 pm

The top power steering hose weeps as soon as you turn right; I can see the fluid seeping out between the bottom of the hose fitting and the top of the pump. I've tried copper crush washers on there but I'm just not getting a proper seal, and I don't want to overtighten it because I've snapped one banjo bolt already.

Is there anything else I can use to help seal it, like a liquid gasket or PTFE tape?
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Brianmoooore
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Post Sat May 04, 2013 9:09 pm

Washers should be aluminium, not copper. I suspect copper is too hard to deform enough to seal.
There's also a type of crush washer available that I've come across on high pressure hydraulic systems, which has a neoprene rubber seal built into its inner edge.
Grrrmachine
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Post Sat May 04, 2013 9:44 pm

Ahhh, that explains it. I'll try and get my hands on some alu ones then. Thanks Brian.
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gromgsxr
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Post Sat May 04, 2013 10:02 pm

dowty washer have a rubber seal on there inner edge
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Brianmoooore
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Post Sat May 04, 2013 10:19 pm

gromgsxr wrote:dowty washer have a rubber seal on there inner edge
That's the name of the things I was thinking off! Couldn't remember until I saw it written down.
smithysmith
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Post Sat May 04, 2013 10:22 pm

Brianmoooore wrote:Washers should be aluminium, not copper. I suspect copper is too hard to deform enough to seal.
There's also a type of crush washer available that I've come across on high pressure hydraulic systems, which has a neoprene rubber seal built into its inner edge.
The aluminium washers were original spec the copper ones were released in 1995. Both still available take your pick.
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Post Sat May 04, 2013 10:31 pm

These are the dowty washers

Image

Very good design IMO, tighten down to the steel and the rubber has sorted the sealing part.
I supply these as part of my custom pipe kits, pm me if you want some sending out mr Grrrrrrrr :D
Grrrmachine
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Post Sat May 04, 2013 10:49 pm

Don't trouble yourself Dan, I'm sure I can grab a couple somewhere :D I'm buggered if I know what they're called in Polish though...