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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

LSPV Removal

Old Nov 30, 2006 | 06:13 AM
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LSPV Removal

Well I removed my ABS system this week and thought while I was tearing stuff out of my truck I might as well get rid of the LSPV while I'm at it.

Here is the rusty POS I started with:
[IMG][/IMG]
[IMG][/IMG]

LSPV removed:
[/IMG]

Last edited by neoworm0; Nov 30, 2006 at 06:42 AM.
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Old Nov 30, 2006 | 06:17 AM
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Removed the fluid return line first. This line just returns fluid to the front brakes and won't be needed anymore. It is the bottom line going into the LSPV and this connection on the "T" inside the passenger fenderwell:
[IMG][/IMG]
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Old Nov 30, 2006 | 06:21 AM
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Going to replace the LSPV with this:
[IMG][/IMG]

It's a Wilwood manual adjustable proportioning valve. Adjustable from 100 - 1000 psi. Fully open it allows 100% brake pressure to the rear brakes and fully closed reduces brake pressure by up to 57%. Or so says the propaganda.

I decided to place it in the same location as the original PV, however you could put it in line of the rear brake line anywhere you want. I think most people like to put it under the hood just after the MC (Master Cylinder) however my truck isn't a DD and stays pretty clean so I think it will be fine there. I can access the knob easily through the wheel well and it was the least amount of work to put it there. I removed the mounting bracket from the LSPV and used it to mount the Wilwood.
[/IMG]

One note: The Wilwood came with fittings that accepted SAE flare nuts not metric. I wasn't able to locate any metric to SAE adapters so I had to cut the metric flare nut off the Toyota line that runs from the MC and flare a new nut on. For the hard line that runs from the PV to the SS flex line I just made up a new line with one SAE end and one Metric end.

Last edited by neoworm0; Nov 30, 2006 at 06:44 AM.
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Old Nov 30, 2006 | 06:38 AM
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Once that was done I needed to plug the "T" in the fenderwell where the return line was connected. Again I couldn't find a 10mm - 1.0 plug.

I did find an adapter with a metric male and SAE female though so I used that and added a 3/16 plug to it. It's kind of ghetto but It will do for now until I can locate a metric plug.
[IMG][/IMG]
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Old Nov 30, 2006 | 06:48 AM
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Lastly I ground off the tab that the arm pivot was attached too.

Before:
[IMG][/IMG]

After:
[IMG][/IMG]

Last edited by neoworm0; Nov 30, 2006 at 06:49 AM.
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Old Nov 30, 2006 | 06:52 AM
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The finished product:

Before:
[IMG][/IMG]

and After:
[IMG][/IMG]

Last edited by neoworm0; Nov 30, 2006 at 06:57 AM.
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Old Nov 30, 2006 | 07:01 AM
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I have M10x1.0 male and female brake line plugs available. They run $12.00/ea.:

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Old Nov 30, 2006 | 07:10 AM
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The plugs Roger shows above work obviously, but I too could not find any when I did my rear disc swap...so I took the old 10mm fitting that did go to that tee and soldered/welded up the end of it.

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Old Nov 30, 2006 | 08:30 AM
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I took the old 10mm fitting that did go to that tee and soldered/welded up the end of it.
I thought of doing that as well but I figured there had to be a metric plug available somewhere.

I have M10x1.0 male and female brake line plugs available. They run $12.00/ea.:
Those look good Roger, but my current setup cost $0.73 CDN. As much as I don't really like it I think I'll get used to it. Meanwhile I'll keep looking locally. Thank you though.
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