84-85 Trucks & 4Runners 2nd gen pickups and 1st gen 4Runners with solid front axles

Lspv help!

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Old Apr 23, 2018 | 06:25 PM
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86overland's Avatar
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From: Utah
Lspv help!

I have a 86 pickup and my wheel cylinder blew. Replaced it. While bleeding it a line blew. Replaced it. While bleeding it again another line blew. Replaced it. Now I’m bleeding it again and my lspv is only letting a very tiny amount of break fluid bleed out the rears. I’m sick of trying to find solutions to reset it but can’t find anything this is my last chance to fix it. I’ve tried everything from making a “fake leak” up front to try to trip it back to lifting up the adjustment bar to the bed and trying to bleed it. Nothing works can someone please explain how to trip it back so it works again or explain in detail how to add a manual lspv. Thanks reading my terrible grammar! Any advice helps thanks!
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Old Apr 23, 2018 | 07:18 PM
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From: Enoch Utah
1st off, your in the wrong section, this is for 84-85 trucks
With that said, there is not "reset" it's a valve!
Push it down and it slows the amount of brake fluid to the rear brakes, push it up and it allows more brake fluid to the rear brakes. I think you need a FSM (factory service manual)
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Old Apr 23, 2018 | 09:03 PM
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From: Utah
Crap sorry i have dislexia and read it wrong!
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Old Apr 23, 2018 | 09:04 PM
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From: Utah
Im also from utah!
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Old Apr 23, 2018 | 11:57 PM
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From: I live in New Tripoli Pa out in the woods
Red face

No biggie people post in the wrong section all the time.

That said These LSPV in the great rust belt are a royal pain .

It sounds like it might be time to replace all the steel and rubber brake lines

You just need to run a new brake line from the Master cylinder to the tee that goes to the rear brakes

Now is the time to buy a double flaring kit

The manual valve goes in this new line

I put the manual valve under the hood close to the Master cylinder so it is easy to access and adjust

Adjusting is trail and error the more the valve is opened more fluid to the rear brakes

Plug the lines at the front brake where the lines from the LSPV go.

Two plugs or make a short line in a loop.
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Old Apr 24, 2018 | 08:07 PM
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From: Enoch Utah
Originally Posted by 86overland
Im also from utah!
Where in Utah?
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