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wb power steering-WB Holden ute

Greetings all.
I have a slow weepy leak thats coming out of the high pressure hose side of the power steering pump.
Dribbles out and under the pump itself and drops itself straight on top of the rag joint , which is now munted. I have unscrewed the hose for a look thinking that it may have an O ring that is dried out but alas there is no o ring of any sort.
Is there supposed to be an o ring around the threaded end so when its tightened up it seals ?
I spoke to Repco who found a listed part but its only the size of the flared end of the pipe itself.

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Sorry cut my self off there ,
Does anyone know if there is an o ring there ? Would it be big enough though to go on the outer edge shown in the pic?( the rusty ring)
The o ring I have would only be as big as the black ring ion the pic which is where the flared end seats itself

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the WB had a metric rather than imperial pump - it had an O ring whereas the earlier pumps relied on a compression fitting in the pump outlet. If you look at WB hoses for sale they come with an o ring - like this:
https://www.ebay.com...
a couple of pics from my WB book attached...so it's possible you have the wrong type of hose and someone has tried to make it fit, have it the wrong way around if possible, or your car wasnt originally fitted with power steering and it's had an earlier model pump, hoses and box fitted...you can easily tell from your hose if it's the type to have an o ring they are quite different.

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Andrew

that is awesome , thankyou for that . My end looks like the male inverted flare where it went into the pump.
I will pull the other end off to see if it is the wrong way around.

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Your attachment says metric attaching bolts
Mine has 9/16 bolts to the brackets with a 5/8 fitting but that bolt pictured is a 17mm

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yes this is how Holden ref the WB pumps compared to the earlier ones HQ-HZ. You need a 14mm spanner for the pump to bracket bolts - not 9/16 that is too loose. You need a 5/8 inch for the hose to pump and an 11/16 for the hose to box . The pump to hose pipe bend is less than 90 degrees and the hose to box pipe bend is about 90 degrees. When you buy a replacement hose you need to know if you have a metric or imperial pump. The metric pump as described above has a different flange and o ring compared to the imperial. So you need to check your hose and pump. If your attaching bolts are 9/16 that suggests you have an imperial pump (not from a WB) - do you know history of car/engine etc? Anyway if you have the imperial pump - the hose would just have the flange and not an o ring - so if you do have an imperial pump and it's leaking that suggests the flange or the pump outlet is the problem. If you have a metric pump and it's been fitted/modified to an imperial bracket then you would need the O ring hose. PS that bolt in your photo is also 17mm on my WB pump - I don't know what that would be on an imperial pump..

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Andrew

Its an 11/1981 253 car originally but the engine is a VT prefixed 308- so anything from Vb to vk engine wise(?). I have no idea what its history is besides that.
From my first picture that I posted, is it possible to tell if that is a WB connection or not? that internal hole is about 5mm across.
Probably unlikely considering the bolts are imperial. Just trying to ascertain what hose to get
thanks again for your help Andrew, much appreciated

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tell from your first pic of the pump outlet..but sorry I'm not sure which type it is. I'm thinking you have an imperial pump if you have imperial mounting bolts - (unless someone tapped out to suit)... So the flanged pipe would be right. It can be confusing sometimes without knowing the history what someone has done. But its not unusual for cars of that age to have had replacement pumps and boxes fitted or even power steering fitted from an earlier car if it didn't have it from build. You could possibly try a soft washer about the size of the flange and see it that when compressed stops your leak..you should be able to unscrew that entire fitting and take it to a shop that has a metric hose and see how that fits...just some ideas.

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Andrew

Well after all that, I dont think it is leaking from there.
I tried a little thread tape just to see what would happen considering it was such a small leak. Put my hand underneath and it is still leaking. Finally got a good picture of it and its coming out of the hex nut that the hose screws into. I thought that was part of the casting of the reservoir but judging by some of the pics on this site it comes off and there would have a seal behind it ? EDIT: This is the fitting that you were referring to in your last post?

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that fitting if you remove has an O ring...also if you have a look at the photo's on this link - esp the third photo in the sequence (Saginaw were the pump makers) you will see the two types of fittings and from your original photo it does not look metric..so you prob have the right hose...you could remove that fitting and see if you can find a suitable o ring...maybe a simple fix..unless a problem with the casing which also has an O ring to the pump body but the pump needs to be dismantled to replace that one
https://www.hotrod.c...
the attached pic is also representative and you can see an O ring in the pressure union

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Andrew

Ive been looking for that picture for ages, I didnt know saginaw made it . I think it is the pressure union gasket that is leaking looking at this picture. Looks like I'll be putting a seal kit through it.
Thanks again for your help

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I'd take that fitting out first and replace that one O ring on the pressure union...you should be able to do that without taking the pump off the car...hopefully that will fix your leak...if not then it's possibly leaking past the O ring fitted between the housing and body...in that case you would need to put a kit through it...good luck...maybe no need for the PTFE tape either...depending on what you have used some of that stuff can be affected by oil

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Andrew

yes I think the tape was a waste of time in hindsight, but I guess it helped me realise the issue at hand .
I will give that a burl first as you suggested.

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Very handy Andrew, Thankyou. Iโ€™ve saved for future reference

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Bryan

don't call him Handy Andy for nothing ya know๐Ÿ˜Ž๐Ÿ˜„๐Ÿ‘

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Cheers Al....
.......... _._________
............__|_____|__
.........../____|___ |__\___
..........|__(โ€ข)________(โ€ข)]

Just to follow up on my post.
Replaced the o-ring in the pressure union only as suggested.
Took it for a spin and there was some oil again under but it must have been a bit of residue that I missed as there is no more leak.
Now I can replace the rag joint without it getting covered in PS fluid.

Now to attack the oil pan gasket- again -but thats another story.
Thanks for your input Andrew for putting me on the right track

John

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good to hear some feedback..that PS/trans Fluid can go a long way...hopefully it's fixed the problem - give the pump body a very good de-grease/clean and check/monitor over time...you also know now you don't have a WB power steering pump fitted but one from an earlier model...so the original may have been replaced - not unusual or never had PS when built and retro fitted later

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Andrew

Good to hear an update. Hopefully youโ€™ve got it licked.

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Bryan

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