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Power steering hi pressure line blocked

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Old 07-20-2018, 04:10 PM
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Power steering hi pressure line blocked

I rebuilt my stock steering box and ever since I reinstalled it it wont circulate fluid. I've narrowed it down to the hi-pressure line inlet being blocked. After unplugging the hi-pressure line from the steering box some fluid seeped out of the line. Upon unplugging the low-pressure (return) line from the steering box, it was dry and had no fluid in it. The hi pressure line is an o-ring type fitting, not a flared type fitting (just FYI).
Here is a picture of the hi pressure inlet on the steering box: It seems sealed, which would explain why no fluid seems to be getting into this freshly rebuilt box.

Last edited by Wickydooda; 07-21-2018 at 03:06 AM.
Old 07-20-2018, 05:13 PM
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Re: Power steering hi pressure line blocked

I've narrowed it down to the hi-pressure line being blocked.
No biggie. Pick one up at yer local corner parts store. Or order from rockauto.com.
Old 07-20-2018, 06:29 PM
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Re: Power steering hi pressure line blocked

Originally Posted by sofakingdom
No biggie. Pick one up at yer local corner parts store. Or order from rockauto.com.
WOW, mistyped on my part. I meant that the hi-pressure inlet on the steering box is blocked. The line is clear, hence why fluid came out when I unplugged it from the steering box.
Old 07-20-2018, 09:21 PM
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Re: Power steering hi pressure line blocked

OK den, pop it out and clean it up. Unscrews right out.

D00d, it's just a car. Not too much magic involved, really. There's like a BILLION of em in the world, apparently these ... HUMANS ... have figured out how to make as many as they want, and they work for the most part. If "they" can do it, YOU can do it. Go ahead, you can DO THIS.
Old 07-21-2018, 02:38 AM
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Re: Power steering hi pressure line blocked

Originally Posted by sofakingdom
OK den, pop it out and clean it up. Unscrews right out.
The line unscrews from the box, but nothing unscrews after that, unless you completely disassemble the steering box I guess.
Old 07-21-2018, 07:52 AM
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Re: Power steering hi pressure line blocked

Sorry, I had "pump" on my mind somehow...

You're right, you'd have to tear down the gearbox to get to that one. It's also possible that the problem isn't the fitting itself, but rather the spool valve in there, or one of the passages around it.

I think you can still get paper & rubber kits for those. They're not too hard to "rebuild". Not much goes wrong with them mechanically; they usually can be repaired pretty effectively.
Old 07-21-2018, 11:58 AM
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Re: Power steering hi pressure line blocked

Originally Posted by sofakingdom
Sorry, I had "pump" on my mind somehow...

You're right, you'd have to tear down the gearbox to get to that one. It's also possible that the problem isn't the fitting itself, but rather the spool valve in there, or one of the passages around it.

I think you can still get paper & rubber kits for those. They're not too hard to "rebuild". Not much goes wrong with them mechanically; they usually can be repaired pretty effectively.
Ive had 3 bad experiences with remanufactured steering gears/boxes at the shop where I work. They sit dry on the shelf for years. Also; they had to be rebuilt for a reason, and most have alot of slop or quickly get alot of slop in them.
Rebuild it. Always feels good to learn something new and save something that you'd otherwise use as a core or throw away.
Old 07-21-2018, 01:06 PM
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Re: Power steering hi pressure line blocked

Originally Posted by 82transm
Rebuild it.
This box was rebuilt already, not long ago.
Old 07-21-2018, 01:22 PM
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Re: Power steering hi pressure line blocked

If it's farkled, it's farkled. Doesn't matter who did what to it when or why. Mighta been rebuilt yesterday; but if it's gotta come apart, it's gotta come apart, and if you do that it needs new gaskets seals & O-rings when you put it back together. Which is all just another bunch of words for "rebuild".

To avoid both "slop" and "sticky" steering, set both the worm shaft and Pitman shaft preload properly. MUCH easier to do that with it off the car and in a vise.
Old 07-22-2018, 11:15 AM
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Re: Power steering hi pressure line blocked

The box was already rebuilt, the power steering pump and pulley are brand new, and the lines are unobstructed.
Does anybody have any past experiences that would help explain why fluid is not making it's way into, or out of, the steering box?
Old 07-22-2018, 04:13 PM
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Re: Power steering hi pressure line blocked

xplain why fluid is not making it's way into, or out of, the steering box?
Box is messed up.

You've got 4 parts (well, maybe 5, if you count the fluid; that's gotta be there too) in the whole system: pump, pressure line, gearbox, return line.

If the system doesn't work, gotta be one of the 4. (or 5) If it has fluid, and the pump works, and the pressure line is good, and the return line is good, only 1 part is left. Not a real intellectual stretch going on here.

If it's farkled, it's farkled. Doesn't matter who did what to it when or why.
Old 07-22-2018, 11:57 PM
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Re: Power steering hi pressure line blocked

If you are having issues with the box just take back If they have a warranty.
Old 07-23-2018, 11:35 AM
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Re: Power steering hi pressure line blocked

Originally Posted by sofakingdom
Box is messed up.
You've got 4 parts (well, maybe 5, if you count the fluid; that's gotta be there too) in the whole system: pump, pressure line, gearbox, return line.

If the system doesn't work, gotta be one of the 4. (or 5) If it has fluid, and the pump works, and the pressure line is good, and the return line is good, only 1 part is left.
Thank you for narrowing it down. Going to get a box today.

Originally Posted by Zspoiler
If you are having issues with the box just take back If they have a warranty.
Original 3.72:1 box, I must have messed up during the rebuild; likely the thrust bearing, just going off of memory.
Old 07-23-2018, 01:19 PM
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Re: Power steering hi pressure line blocked

Then just go through it again and have a shop go through it.
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