Installed PSC Resi, system won't bleed

K30_Blazer · Feb 28, 2015

So I installed my PSC resi into my steering system today. I have had some challenges with the lines and connections but I cannot get the damn thing to bleed. I figure I must have an open connection in the system somewhere but don't know where to begin pulling things out.

I run from the box to the finned cooler back to the resi and back to the pump and back out to the box.

I am having trouble getting an adequate fitting for the return line on the chevy PS pump so I had to use hose and a barb fitting and that didn't connect perfectly to my AN fitting on my line. I wrapped the barb with teflon tape and as far as I can tell it isn't leaking.

Same issue with the non pressure line on the box. I bought a Russell fitting that I thought would thread, but it didn't

My other issue is the PS pump itself. The ps cap leaks and since the resi is above it my fluid slowly drains unless I use a radiator hose to extend it. Pretty ghetto.

Anyway, here is how the system looks, any one have the exact size on the steering box non pressure port and what fitting to use on the return line on the ps pump that would be awesome. Not sure what I am gonna do about the PS pump cap either, I have tried three and they all leak.

Here is the entire system. As you can see I had to step down the return line on the resi from 10AN to 6AN.

here is the ******* filler tube. Still kinda leaking but only at the top, not at the pump.

here is one of the barb to AN fittings I had to rig. This is on the return line to the PS pump, doesn't seem to be leaking but......

and here is the one on the non pressure line of the steering box.

K30_Blazer · Feb 28, 2015

forgot to mention, had the truck up on stands and cycled the steering probably 100 times. Keeps blowing bubbles and volume varying too much. In my experience there comes a point where the system should find some sort of equilibrium volume wise.

Also when I turn the engine on it just foams the resi, puke fluid and starves the ps pump

isbj60 · Feb 28, 2015

No hose clamp on that lower barb?

K30_Blazer · Feb 28, 2015

no, I need to add one, but there is no leaking there. No idea what is going on now though. I swapped the lines and that stopped the foaming and constant bubbling but I can't get a consistent fluid level in the resi. If I fill it and cycle the steering it will overflow. If I let it settle and drop down to about 1/3 of the resi, it will take longer to overflow but still overflow. If I start the engine it sprays fluid. In looking at the schematics, I need to have the 10 AN line feeding my pump and the 6AN the return from the cooler. I swapped them to see if that was the problem, but nope.

I can't figure out why this won't stop foaming and bubbling

WTF

isbj60 · Feb 28, 2015

The fitting without the clamp may not leak out, but it could be leaking air in.

You might be having problems since you essentially have two reservoirs. Most remote res systems I've seen with the Saginaw pumps have a back cover on the pump that does not have a built in reservoir. My 85 K30 crew cab with the 454 is that way. Might be a source for a back cover for you.

K30_Blazer · Feb 28, 2015

that is the only thing I can figure. I have ordered some fittings to replace the barbs and will see if that helps. Would it still be sucking in air even if the pump isn't running. I have only been cycling it without the engine off.

When I was trying to bleed it there was definitely the feeling that I was sucking air in. It seemed to never change the level of bubbles coming out no matter how many times I cycled it.

I would love to take off the ******* hose to, but can't figure how I might go about sealing the leaking ps cap.

isbj60 · Feb 28, 2015

Getting rid of the ******* hose alone won't solve your problems with level. You have two high points where air is settling out, each establishing their own level. try chopping the ******* hose down a ways so the top is lower than the bottom of the remote res and venting the top of it back to the remote reservoir and see if level stabilizes out better. Your best bet is to have only one high point for air to be separated out into. And that should be your remote res.

see if you can find a PVC cap that will fit inside the hose to seal it off. Clamp it well and it should at least hold long enough to troubleshoot.

flatblack51 · Feb 28, 2015

Is your cooler above the resi at all?

K30_Blazer · Feb 28, 2015

The cooler is not above the top of the resi but it is above the return and supply fittings on the resi

isbj60 · Feb 28, 2015

The cooler location shouldn't matter too much. It loops above the res on my 95 suburban. It has through flow.

K30_Blazer · Feb 28, 2015

what I have been seeing is that the fluid in the resi will keep dropping until it equals the level in the ******* hose. The ******* hose will leak until the resi drops its level and they equal.

isbj60 · Feb 28, 2015

Gotta get rid of that second res. Something like this. Off of my K30 I mentioned above.

K30_Blazer · Feb 28, 2015

I have an LQ9 I will be dropping in the truck in the near future so I am trying to not throw money at the SBC. Guess I could use that pump with the new motor too though....

nshay · Feb 28, 2015

your "return" which is the feed to the pump is to small. it needs to be at least -8 and suction rated hose. -10 would be better. it is sucking air through the barbed fitting. the feed to the pump needs to be bigger than the pressure line.

K30_Blazer · Feb 28, 2015

But the return line fitting is small. Isn't that the bottleneck? I needed someway of stepping down the 10AN to a 6AN and so did it right at the resi. If I ran 10AN line wouldn't I still step down at the fitting?

flatblack51 · Feb 28, 2015

I recommend the CBR pump and the relocation bracket from goatbuilt if your linked up front. Package is nice for the LS series

65Chevy4x4 · Feb 28, 2015

you basically installed a reservoir in the return fitting. That should be feeding the pump. Junk that can on your pump and get one like above.

K30_Blazer · Feb 28, 2015

So essentially the system is fighting having two reservoirs? Pulling from one and fluid being pushed from the other causing cavitation? Is this what could be causing th foaming in my system? Is it worth investing in a Howe or PSC pump or just getting a reman cardone good enough?

4x4clif · Feb 28, 2015

Just replace the can with this Remote Fill P Pump Reservoir Can # 10 JIC Feed O-ring Side-SR2545 : Reservoirs and Coolers, Reservoir Cans | PSC Motorsports - performance steering components, power steering
And a hose kit. Or just the 10an fitting and hose.
Reservoir Hose Kit Non-Hydro boost-HK2100 : Steering Hose and Fittings, Hose Kits | PSC Motorsports - performance steering components, power steering

Reuse on the LQ9 install.

crashinaz · Feb 28, 2015

You installed a buffer in the return line that isn't capable of getting fluid back to the original resivoir at the rate a straight return would. That's all. Lose the 2nd res until you're ready for it.

K30_Blazer · Feb 28, 2015

so I have this 10 AN fitting I can run straight off the return line on the resi.

Gonna order a couple feet of the 10AN hose for the return line to replace the 6AN line that I currently have in there.

I will still be stepping down to 6AN fitting at the return line at the pump using this fitting

I will still need to use the reducers just down at the pump end not the resi end to get the line adapted down to the PS pump fitting.

I guess the overflowing problem I was seeing at the resi was a result of the volume returning to the resi overwhelming the volume of the return line to the pump.

This will move the bottleneck down to the pump, will that make this much difference?

Sorry for the ignorant questions.

:homer:

K30_Blazer · Feb 28, 2015

looking at the PSC pumps not really sure what the difference in all three offered is apart from a different return line AN size. Looking at the 8AN return line size, not sure why they don't offer a 10AN return line when that is what their resi has

80 & Newer Hi Performance P-Series Pump with Remote Can -6 AN : Off-road Steering Components | Pump Systems and Components | GM | Pumps Only | PSC Motorsports - performance power steering

Just to confirm, this will bolt up to my SBC with stock bracketry and swap over the LQ9 also? I just use my stock pulley?

CTD NUT · Feb 28, 2015

^ That pump you linked has #12 feed and a #8 pressure fitting. You will want the pump I linked in my previous post.

CTD NUT · Feb 28, 2015

Yes, the pump is the same mounting pattern that you have now. The only thing that is different is the sheet metal canister that the pump sits in.

All you really have to do is get the remote res can from PSC that has the #10 fitting in the top. Then plumb your #10 hose from your res to the can.

Do not waste your time plumbing #10 in a system if you are going to step it down to #6 at the fitting. You are wasting your time as the system will only flow as much as the smallest fitting will allow.

K30_Blazer · Feb 28, 2015

I think I am just gonna order a PSC pump and run the 10 AN line down to the 8AN fitting on the pump. Not sure why they don't make a 10AN fitting pump.....

CTD NUT · Feb 28, 2015

They do make a remote res can with a #10 bung. They even make one with a #12....at least they used to. I run their can with the #12 bung.

DEER TICK · Feb 28, 2015

PSC P-pumps are fed with AN-10.I don't know why you keep saying you are going to down size at the pump.Your resi should have an AN -10 fitting for feeding your pump.When you get your PSC pump, it will have an AN-10 fittng for the feed, and an AN-6 that feeds high pressure to your system.Do not down size your pump feed! !

CTD NUT · Feb 28, 2015

PSC pump with #10 feed fitting and #6 pressure fitting: 80 & Newer Hi Performance P-Series Pump with Remote Can -6 AN : Off-road Steering Components | Pump Systems and Components | GM | Pumps Only | PSC Motorsports - performance power steering

K30_Blazer · Feb 28, 2015

Sorry I was reading it wrong. I thought the size referenced the feed not the pressure. Cool, I will pick up a 10AN. Thanks

Installed PSC Resi, system won't bleed

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