What have you done to your square lately??

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RetroC10Sport

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Yeah, I need to get over there and get on that. Just seems like no matter what we do, it doesn't want to get the back brakes to work.
 

raylanr

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Does it have a rear load sensing valve? Look at the diff and see if it has a small arm connected to what looks like a prop valve with brake lines running to it. I'll bet if it has one, it's failed.

Okay, I will do that later this afternoon, thanks!
 

HotRodPC

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Yep, I was gonna say, the load leveling valve is on 84-88 3/4 and 1 tons. Bypass that ****. It's legal to do so, and GM even reccomends it. Chegny I think it was posted a TSB about that.
 

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HotRodPC

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It appears not ALL 84-88 got that load sensing arm. My 86 C20 didn't get it.
 

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raylanr

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Yep, I was gonna say, the load leveling valve is on 84-88 3/4 and 1 tons. Bypass that ****. It's legal to do so, and GM even reccomends it. Chegny I think it was posted a TSB about that.

Okay I see 2 pair of lines, the rubber ones and the hard lines. which ones are the ones I need to look for.

Edit: I should have look at the C20 picture too...
 

robert8096

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Got the engine and trans back in and running.

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Finished the rear flip.

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Got to replace the master cylinder and bleed the brakes so I can move it outside for better pics. Complete rewire and Dakota VHX gauge install up next.
 

foamypirate

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Okay I see 2 pair of lines, the rubber ones and the hard lines. which ones are the ones I need to look for.

Edit: I should have look at the C20 picture too...

You'll be looking for the hard lines. There should be a hard line coming off the frame that runs over to the load sensing valve, and then another hard line off of that that runs over to the rubber hose on the diff.
 

foamypirate

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Got the engine and trans back in and running.

You must be registered for see images attach


Finished the rear flip.

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Got to replace the master cylinder and bleed the brakes so I can move it outside for better pics. Complete rewire and Dakota VHX gauge install up next.

Wow, that looks immaculate! Very nice job!
 

raylanr

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Well it looks like I have one.
 

raylanr

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Foamy you should have remember, you spend at least an hour down there when you weld the muffler! LOL
 

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HotRodPC

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Got the engine and trans back in and running.

You must be registered for see images attach


Finished the rear flip.

You must be registered for see images attach


Got to replace the master cylinder and bleed the brakes so I can move it outside for better pics. Complete rewire and Dakota VHX gauge install up next.

I love the look of the engine compartment. So nice to see the OE look for a change.
 

HotRodPC

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Okay I see 2 pair of lines, the rubber ones and the hard lines. which ones are the ones I need to look for.

Edit: I should have look at the C20 picture too...

It's very easy to work around. You'll see the hard line coming in. That's the line you want to connect up to the rubber line that goes to the tee. All you are doing is getting around the valve.

This is probably another project we need to have it's own thread so that it doesn't get lost in the What did you do to your ... thread. Just do what you do, and I'll transfer it over.
 

raylanr

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It's very easy to work around. You'll see the hard line coming in. That's the line you want to connect up to the rubber line that goes to the tee. All you are doing is getting around the valve.

This is probably another project we need to have it's own thread so that it doesn't get lost in the What did you do to your ... thread. Just do what you do, and I'll transfer it over.

I will add it to my built threat, thanks for giving me hope on getting this perra stopping. because it moves.
 

HotRodPC

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Foamy you should have remember, you spend at least an hour down there when you weld the muffler! LOL

I have another question about this. Do you have the Full Floating rear end, or do you have the Semi Floating axle???

I'm wondering what the difference is and why my 86 C20 doesn't have this get up. :shrug: My 84 and 85 C20 both have it but they both also have the Semi Float rear axle, and my 86 has the Full Float.
 

raylanr

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I have another question about this. Do you have the Full Floating rear end, or do you have the Semi Floating axle???

I'm wondering what the difference is and why my 86 C20 doesn't have this get up. :shrug: My 84 and 85 C20 both have it but they both also have the Semi Float rear axle, and my 86 has the Full Float.

Full Floating Rear 14 bolt.
 

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