May have found something on my brakes.

[Kenall]

I'm sorry, what do you mean?

well if the fluid in the MC was lo, where did it go?
did it leak out all from the combo valve?

[serehill]

LOL

Yeah sorry guys. I was given the option to either buy a new one that would ship immediately and be refunded when the old one made it back, or return my old one and get a new one shipped when it arrived.

I chose the latter. Just waiting on the part. No rush right now because I'm leaving town for a week on Wednesday.

Makes you love mail order.

[Dr. Marneaus]

well if the fluid in the MC was lo, where did it go?
did it leak out all from the combo valve?

From what I can tell, yes. It was all gone from the front res on the MC the rear was still topped off. No other unions or flares were wet or anything on the front. It all leaked out by gravity it seems, over about a 2 week period. The ground wasn't all wet but I assume it droned out sooner than that and dried up.

[serehill]

yu know you right

Hope you're fooling because teflon tape does NOTHING for compression seat fittings

But it works on the adaptors.

You see the adaptors on the PPV?
I know there is mixed emotions about this but it works well & with the cheap junk adaptors & valves it serves well. Google it it's used more than you think.

[Kenall]

But it works on the adaptors.

You see the adaptors on the PPV?
I know there is mixed emotions about this but it works well & with the cheap junk adaptors & valves it serves well. Google it it's used more than you think.

i use TT on all threaded fittings.

[asphaltrockdweller]

Any luck on your brakes Drew?

[Dr. Marneaus]

I'm in NH right now, bj's called me on Thursday and said they would be shipping the new valve out to me in the next day or two, so hopefully it will be waiting for me when I get home on Wednesday.

I should probably have it in and be able to test everything over the weekend. Woo!

[dummy]

Same thing happened to my '78 Cherokee's original proportioning valve assembly and then to the replacement I installed.

Finally ordered one of these and got the brakes working right: http://inlinetube.com/Prop%20Valves/VML102.htm

Not sure if you have front drums. If so, probably one of the early '70s GM car units would be a direct bolt-up.

[serehill]

Yeah same one I used but mine was faster & cheaper.

After dealing with cheap 2 ones people were making a high mark up on I found you could get better quality cheaper.

http://www.ebay.com/itm/disc-disc-PROPORTIONING-VALVE-COMBINATION-VALVE-w-Fittings-for-four-wheel-disc-/230775945538?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item35bb517942

This is a good PPV same as dummys' this guy will send you disk, disk or drum, drum for the same price.

[Dr. Marneaus]

I maybe should have gone that route. I still dont have the new part.

It will have been 3 weeks since I mailed mine back before i have the replacement. Kinda ridiculous.

[Dr. Marneaus]

still a no go.

New prop valve is in and 100% leak free. Something I noticed is that this one, the pin on the front stays in at rest, but when you press the brake it pops out, then goes back in when you let off.

That tells me the metering valve is workting or at least moving.

The old one never did that.

I'm still stuck though. I even put in a new master that I had laying around, everything is exactly the same. the front wont grab, back will still lock up.

Pedal is mushy and goes to the floor if you press hard enough.

Front calipers are moving. Just not what seems like enough.

[pcoplin]

Bummer! Frustrating.

Did you ever try to vacuum bleed it?

[Dr. Marneaus]

Nope.

Well, i have a MightyVac but the line is too big or something, and it cant pull enough to "fill" the clear line so I cannot see if it's got bubbles.

[Fury5]

That pin that you see moving outward when you press on the break pedal, I have a dim recollection that on the older rigs that pin has to be held in the outward position while bleeding the front brakes. I think the TSM showed a special jig to place up under the pin to hold it out while bleeding. Sorry, but I can't recall which years this procedure applied to.


Just a thought.

[Carnuck]

on http://oljeep.com is a pic of the S and D style valves. One is pushed and the other pulled during bleeding

http://oljeep.com/edge_brakes.html