Hydraulic repair failed on steering

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belaprops
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Joined: 05 Dec 2019, 23:20

Hydraulic repair failed on steering

Post by belaprops »

Hi all,

After a lot of cleaning and plugging ports and pipes it seems I have bought into a problem with my power steering hydraulic.
As you can see on the pics the oil is dripping from the low presure pipe and some kind of substance has been used to seal it into the port. It's rock solid and I can't get the pipe out.

I'm pretty good with mechanic and I can't aford a new garage repair... thanks to covid.

Any suggestions are welcome to keep my C5 steering even if I have redo it again after a while.

Many thanks
Bela
20200801_152733.jpg
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20200801_152632.jpg

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KennyW
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Re: Hydraulic repair failed on steering

Post by KennyW »

Bela,

Have a read of this thread

viewtopic.php?t=65040

a lot of discussion re the rack and the pipes.

Kenny

belaprops
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Re: Hydraulic repair failed on steering

Post by belaprops »

Thanks Kenny, nothing about fixing a botch job.. lol.., I'm gona try to heat the area up, get as much stuff out and the liquid metal it. I see no other option.

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KennyW
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Re: Hydraulic repair failed on steering

Post by KennyW »

I was think about using the Xantia Mk 2 power steering pipes and adapting them to the X7 system. But, time was of the essence and required a quicker fix. Fortunately, I found a company in Glasgow who had a refurb'd rack so bought that and gave them my rack as part exchange.
My HP and LP power steering pipes were in very good condition, only required new seals and careful fitting.
So far no leaks.

Kenny

belaprops
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Re: Hydraulic repair failed on steering

Post by belaprops »

Where did you get the seals from, you mean the o ring on the pipes going into the steering rack

Filberton
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Re: Hydraulic repair failed on steering

Post by Filberton »

This may be a non-starter but I came across this About aluminium brazing for pin-hole leaks.

Mike

belaprops
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Joined: 05 Dec 2019, 23:20

Re: Hydraulic repair failed on steering

Post by belaprops »

It's been a very long time since I have brazed a piece, but I have got the pipe out the port. But now having murder with getting the wheel off to access the fixing to ease the pipe .
They used some kind of sealant on the pipe, but I'm trying to see if the o ring is the problem.
Any idea where I can find those, are they just rubber or different.
This one is pink if I can see right , the high pressure one was blue.

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white exec
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Re: Hydraulic repair failed on steering

Post by white exec »

O-rings of any size from polymax.uk, in Bordon, Hants.
Use Viton (FKM) for this application.
Available in small quantities, and quick online ordering/delivery.

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KennyW
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Re: Hydraulic repair failed on steering

Post by KennyW »

As per Chris's reply the sizes you require are 8mm x 2mm and 9mm x 2mm. These are internal diameter and width.
Steel Pipe Dims.jpg
Steel Pipe Dims.jpg (24.74 KiB) Viewed 55 times
Alu Pipe Dims.jpg
Alu Pipe Dims.jpg (22.15 KiB) Viewed 55 times
A: Swage Dia 16.70mm
B: Pipe Dia (same as F) 11.95mm
B1: Section Length 3.30mm
C: 'O' Ring Groove Dia 9.45mm
C1: 'O' Ring Groove Width 2.45mm
D: Section Length 8.60mm
E: Overall Length to Base of Swage 14.00mm
G: Swage Dia 14.90mm
H: Section Length 3.70mm
I: 'O' Ring Groove Dia 8.30mm
I: 'O' Ring Groove Width 2.78mm
J: Overall Length to Base of Swage 11.58mm
K: Section Length 5.10mm
L: Pipe Dia 10.95mm

Thanks must go to Bobbins for these measurements.

A to E is the Aluminium Pipe and G to L is the Steel Pipe.

Kenny

belaprops
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Re: Hydraulic repair failed on steering

Post by belaprops »

Well, just got the last post, thanks a million, that's is language I can understand.
Let's hope it's just the seals which degraded and not something else

belaprops
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Re: Hydraulic repair failed on steering

Post by belaprops »

Just one question , what ShA and FDA do i chose, or is this trail and error

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white exec
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Re: Hydraulic repair failed on steering

Post by white exec »

ShA (shore hardness) of 75 will be ok, Viton (FKM) quality.
I suggest ordering the next small increase in thickness as well as 2mm.
PSA are known to be not very generous with OE O-ring sizes, and a fraction of a mm oversize might be needed to get a really snug fit.
Cheap enough, and avoids need for a second order.
Lubricate with silicone grease/vaseline as you fit, to prevent scuffing.

belaprops
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Re: Hydraulic repair failed on steering

Post by belaprops »

Thanks Chris, the suggested supplier only does big quantities, so I need to find another supplier.
Who are PSA... sorry am a little thick.
I found other suppliers, but they sell 2 rings for 4 pounds...

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Hell Razor5543
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Re: Hydraulic repair failed on steering

Post by Hell Razor5543 »

PSA are the Peugeot Group; Peugeot Société Anonyme.

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bobins
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Re: Hydraulic repair failed on steering

Post by bobins »

Plenty of suppliers on eBay and elsewhere. Bearingboys https://www.bearingboys.co.uk/Metric-Orings-1631-c and Simplybearings https://simplybearings.co.uk/shop/Seals ... index.html are a couple of the countless suppliers that can supply Viton and other 'O' rings.