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Discussion Starter · #1 ·
Hi there,

I just finished replacing the high pressure and other hoses hose and bled the power steering system. I tried to empty it as much as I coudl by blowing in all hoses, almost 1 litre came out... anyway, now I see there is a small nipple on the power steering box...



and this:

Technical - Steering Boxes | Power Steering Specialists

"Most power steering box systems are self bleeding but if air is trapped inside the power steering box the steering assist will feel a bit vague. This will generally only be in one direction and is more apparent when the steering wheel is turned quickly. This is due to the air trapped inside the steering box compressing, this air will give the feel of vague steering assist"

Well mine does not feel 'vague' - as not vague as GQ steering can be LOL...

My questions are:

1) DO I have to bleed it from there? Is there any advantage / drawback from trying / anyone ever did it? Considering I have emptied the system... (ie took the rubber hose off on the return and the high press off the inlec ton the psteer box and blew in the pipes to expel as much as possible - coudl air be stil trapped?
2) If I do it, how do I go about it...
a) engine on or off
b) wheels off or on ground
c) having to move the steering wheel while opening and closing the nipple

THe gist of the matter is, I wonder whether I should try it anyway if no harm done and how exactly to do it to be effective...

Thank you
 

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nissan patrol
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shouldnt need to bleed it, top it up and run engine for min, but try it anyways and see if any air comes out with engine off, will gravity bleed, shouldnt be any air in line
maybe they do this at factory, so they dont have to top it up after its been running
 

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Discussion Starter · #3 ·
shouldnt need to bleed it, top it up and run engine for min, but try it anyways and see if any air comes out with engine off, will gravity bleed, shouldnt be any air in line
maybe they do this at factory, so they dont have to top it up after its been running
Yeah I did all the power steer pump 'bleeding' by the book with engine off (didn't have any effect) and on (thats when it gulped the fluid in) and wheels off the ground, I got in almost 900ml, level stabilised now nicely on TOP mark... maybe I shoudl leave it alone, I saw nothing about this in the repair manual or the CD I got... they only talk of the bleeding we know, on the pump... Used Castrol DX3 (Dexron III). BTW they shoudl say that to change the fluid you should empty the pump, lines but also the box AND the cooler loop near the radiator else you only replace like 60% of it...
 

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nissan patrol
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Normally the box will self bleed. If the steering feels normal, and the pump isn't screeming then I wouldn't worry about it.
 

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Normally the box will self bleed. If the steering feels normal, and the pump isn't screeming then I wouldn't worry about it.
x2 ive never had to after new pump fitted, new box fitted and numerous flushes in the mean time. just fill start and top up as required.
 

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@brianwood does this mean that now i have tightened up the hoses to just fill with oil and start it and powersteering system will self bleed .
Because i removed hoses to the little radiator behind bullbar to get enough clearance to get block into engine bay then when i re assembled the first start of a freshly rebuilt donk was too nerve racking for me and i had forgot to tighten it back up.
I have left a trail of fluid stain out front of neighbours houses and i dont think they are impressed . Ive tried degresser to no evail . So iam thinking trying to scrub with hydrochloric as the trail is quite bad and a massive patch next door were they are selling and having open house on weekends
 
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