Porpotioning Valve

I'm sorry this is terrible picture but I'm hoping you can tell what it is. I "think" it is a porportioning valve it sits right in front of my master cylinder under my feet on the frame. The vehicle I'm working on is a 70 CJ5 V6 my problem is that it leaks just a little tinny bit no matter how tight I screw in my brake line so I'm hoping I can easily replace it?

 

My CJ5 did not come with a prop valve.. so I'm not sure what you have there.. but it does look like one. My CJ5 had a 4 way block.. after the master cylinder. Which line is leaking ? you may try replacing the line first.. as the line could be the problem.

 

My 1971 CJ5 has a block that looks like that but I think its just a coupling. The line could also be your problem.

 

Those blocks are usually (on other vehicles) made of brass. It looks to me like a fairly standard one. While you have the line that is leaking off, pull out your magnifying glass and check for a damages seat in the brass.

 

on the other side of the block, does it have 2 hoses and a switch between them?

 

If there's only one line going in and two coming out as it appears in the picture it's not a proportioning valve, just a splitter block. You'll also want to check the flare on the brake line to see if it's split. Assuming the brake line is double flared?

 

Re: Brake line combiner

I think that I am using the wrong word to describe it based on what others have said. It has 2 lines going in and 2 lines coming out. What is interesting about it is that there are 2 different sizes of connectors going into it. Regardless I have put 2 different brake lines on the port that continues to leak ruling out the line in my opinion. I can't think of a way to fix it because it is a soled block of brass. I was hoping someone would jump up and say you can get them here or I have one one on a shelf in my garage I wouldn't mind parting with?

 

If I have time today to look I might actually have one sitting on the shelf, or in a box, or in a coffee can R). Does sound like a problem with the block though.

 

The FSM just calls it a line tee, but that never made sense to me, I would just call it a terminal block as it dose not really divide the brake line, just contines on. If it "tee'ed" the line, it would ruin the purpose of having a dual master cylinder for safety. I think you can get them at NAPA or other places like that. Good luck

 

Sounds to me like its a block to reduce the line size. Coming out of the master cylinder would be 1/4" line, then out of the block would be 3/16" right ? My cj5 (one as it was single chamber)had 1/4" line coming out of the master to the block, then it reduces to 3/16" line. If thats all this block is.. then you should be able to pick up a brass reducer at a good parts store.. but you may have to get 2 blocks instead of one. It would be a SAE inverted flare type that reduces 1/4" line to 3/16" line with female ports.

 

Had a look and I don't have one. Jeepster had them too but they were a different part number, probably due only to the way the bracket was mounted. The original part number is 941703, probably not going to help much since a quick Google search and a search on Walcks didn't bring anything up.

 

Thank you so much for checking I never really looked that close but if it is just a splice or pass through block then I would think it would be easy enough to find a replacement? Guess I will start making some phone calls tomorrow to find out.