Author Topic: PSC Power Steering Pump Cavitation Issue  (Read 5147 times)

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ChadStich

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PSC Power Steering Pump Cavitation Issue
« on: Dec 29, 2016, 12:00:02 AM »
I Put a PSC TC pump on my truck and I'm having issues with cavitation. I put the front up on jack stands and did the normal bleeding procedure and it worked great. No more wine and the pump was silent. Started driving it and I made it a few miles and it started to wine and cavitate. Took it back home re bleed it, took it for a drive and same thing. Ive done this multiple times and alway the same result. Does anyone have any idea or experience with what the problem could be? I checked all the lines for leaks and I can't find any.

Here are some pictures of the setup.







94 2wd extra cab sas, 3rz, 4.30 e-lockers f/r, dual stock cases with marlin adapter, longs, 35s, RUF, Chevy 63's

http://board.marlincrawler.com/index.php?topic=99269.0

Ritchie

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #1 on: Dec 29, 2016, 05:22:11 AM »
Can you provide a pic of the pump & reservoir together?

I had the same issue and found the fill level mark inside the reservoir was below the low pressure input on the pump.  I raised the reservoir and it cured 90% of the whine.

When I change the fluid, I'll be using Valvoline Pro V series power steering fluid.  Doesn't foam like other products, creating whine.

Good luck.
'03 Prerunner, ARB's F/R w/5.29's, 4WU 3 link, Diamonds F/R, Fox shocks F/R, Shrockworks front bumper, self made rear bumper, WARN M8000S, Inchworm Lefty, Deaver 8 pack, MC sliders that hold air & a bunch of other stuff.

ChadStich [OP]

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #2 on: Dec 29, 2016, 09:50:19 AM »
Here is a couple pictures. The first one shows the height differences in the lines.


94 2wd extra cab sas, 3rz, 4.30 e-lockers f/r, dual stock cases with marlin adapter, longs, 35s, RUF, Chevy 63's

http://board.marlincrawler.com/index.php?topic=99269.0

megaphoneman

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #3 on: Dec 29, 2016, 01:13:22 PM »
Do you have a ram on it?

ChadStich [OP]

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #4 on: Dec 29, 2016, 02:10:23 PM »
Do you have a ram on it?

No ram on it just the pump for now.
94 2wd extra cab sas, 3rz, 4.30 e-lockers f/r, dual stock cases with marlin adapter, longs, 35s, RUF, Chevy 63's

http://board.marlincrawler.com/index.php?topic=99269.0

megaphoneman

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #5 on: Dec 29, 2016, 02:40:34 PM »
No ram on it just the pump for now.
thats part of your problem.. they pump so high that they do that..i pulled my ram off and it quickly got super hot and would cavitate.. you need a tad more height for sure but the psc pumps don't like not having a ram i guess..


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Ritchie

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #6 on: Dec 29, 2016, 03:19:51 PM »
I noticed the height difference of the fittings on your reservoir.  Both of mine are at the bottom... not sure if that matters.

'03 Prerunner, ARB's F/R w/5.29's, 4WU 3 link, Diamonds F/R, Fox shocks F/R, Shrockworks front bumper, self made rear bumper, WARN M8000S, Inchworm Lefty, Deaver 8 pack, MC sliders that hold air & a bunch of other stuff.

ChadStich [OP]

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #7 on: Dec 29, 2016, 03:53:56 PM »
thats part of your problem.. they pump so high that they do that..i pulled my ram off and it quickly got super hot and would cavitate.. you need a tad more height for sure but the psc pumps don't like not having a ram i guess..


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Mine isn't getting hot at all lucky it just makes a whole bunch of noise. Ill be getting a ram soon though so Maybe that will help.

I noticed the height difference of the fittings on your reservoir.  Both of mine are at the bottom... not sure if that matters.

I see that. I might have to build another reservoir and but them both at the bottom.
94 2wd extra cab sas, 3rz, 4.30 e-lockers f/r, dual stock cases with marlin adapter, longs, 35s, RUF, Chevy 63's

http://board.marlincrawler.com/index.php?topic=99269.0

Ritchie

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #8 on: Dec 29, 2016, 04:15:38 PM »
... come to think of it, if your top outlet on the reservoir is feeding the pump, that could be an issue in that there is a chance of the pump pulling air instead of fluid.  Think of your truck on an angle, fluid will go to one side or the other.

Anyway, just a thought.
'03 Prerunner, ARB's F/R w/5.29's, 4WU 3 link, Diamonds F/R, Fox shocks F/R, Shrockworks front bumper, self made rear bumper, WARN M8000S, Inchworm Lefty, Deaver 8 pack, MC sliders that hold air & a bunch of other stuff.

ChadStich [OP]

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #9 on: Dec 29, 2016, 04:57:31 PM »
... come to think of it, if your top outlet on the reservoir is feeding the pump, that could be an issue in that there is a chance of the pump pulling air instead of fluid.  Think of your truck on an angle, fluid will go to one side or the other.

Anyway, just a thought.

The bottom hose is the feed line the top is the return coming from the cooler. Its just the way the picture is taken. But like you said maybe the fluid level is below the return and causing it to aerate the fluid causing the cavitation. The return is pretty close to the top but I think I can get the fluid level past it without it overflowing. Im going to give it a shot.   
94 2wd extra cab sas, 3rz, 4.30 e-lockers f/r, dual stock cases with marlin adapter, longs, 35s, RUF, Chevy 63's

http://board.marlincrawler.com/index.php?topic=99269.0

Ritchie

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #10 on: Dec 30, 2016, 05:17:40 AM »
My Howe system is pressurized as well, not sure if that changes things up.

I'll get a better photo of the reservoir once the sun is up.
'03 Prerunner, ARB's F/R w/5.29's, 4WU 3 link, Diamonds F/R, Fox shocks F/R, Shrockworks front bumper, self made rear bumper, WARN M8000S, Inchworm Lefty, Deaver 8 pack, MC sliders that hold air & a bunch of other stuff.

Ritchie

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #11 on: Dec 30, 2016, 03:34:50 PM »
Here are a couple pics for you.
'03 Prerunner, ARB's F/R w/5.29's, 4WU 3 link, Diamonds F/R, Fox shocks F/R, Shrockworks front bumper, self made rear bumper, WARN M8000S, Inchworm Lefty, Deaver 8 pack, MC sliders that hold air & a bunch of other stuff.

ChadStich [OP]

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #12 on: Jan 01, 2017, 05:11:43 PM »
Cool thanks. I might just build a new one
94 2wd extra cab sas, 3rz, 4.30 e-lockers f/r, dual stock cases with marlin adapter, longs, 35s, RUF, Chevy 63's

http://board.marlincrawler.com/index.php?topic=99269.0

OOPS

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #13 on: Jan 03, 2017, 06:23:25 PM »
The best fluid you can run.
David & Theresa Fritzsche, 1990 Ex-Cab with a few mods!!!!!!!!! Roseville, CA Sobriety =Serenity

ChadStich [OP]

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Re: PSC Power Steering Pump Cavitation Issue
« Reply #14 on: Jan 03, 2017, 10:29:38 PM »
The best fluid you can run.

thats what I'm running
94 2wd extra cab sas, 3rz, 4.30 e-lockers f/r, dual stock cases with marlin adapter, longs, 35s, RUF, Chevy 63's

http://board.marlincrawler.com/index.php?topic=99269.0

 
 
 
 
 

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