Brake Light Switch Replace, To Bleed Or Not To Bleed

ok while we are on the subject. I just looked at a youtube vid about the power bleeder and how to bleed all the brakes. Question, how does the power bleeder attached to one of our dual MC's? The video showed an old car with a convenient round opening that the bleeder just screwed onto. Been a good discussion, thanks.

 

You need a not-inexpensive adapter that covers the top of the MC - https://www.amazon.com/Mityvac-MVA8...id=1471204132&sr=1-9&keywords=bleeder+adapter

I have an inexpensive power bleeder I use with my VW, and one that I made from a pump sprayer. I made an adapter for my CJ-6 and J10 similar to the one pictured above using a thick piece of lexan and ruber gasket, and it mostly works (sometimes it leaks and then I fiddle with it until it does not leak). IMO the speed bleeders are a better solution in most cases.

 

The saga continues! So tried to replace switch and tore the brass elbow from the MC. Clamped the exhaust which was perfectly in line with the seared off fittting and easy outted the remaining threads. So, replaced with new elbow from NAPA and threaded on new switch. So at this point I gotta bleed. Can I just unscrew one of the old bleeder and bring to local auto parts shop for a sizing up to get speed bleeders now that I am this far into it?
Any and all additional bleeding advice would be great, thanks guys!

 

I bought my speed bleeders through Amazon. How savvy are you about thread sizes? There are not that many sizes to choose from. Your local hardware store or home center typically has a display that helps you determine the thread size of nuts and bolts. That would work for your speed bleeders too.

If you are committed to installing the speed bleeders, I'd say don't worry about removing the bleeder valves on one or all of the cylinders. You're going to bleed all the wheels, and it won't matter as long as you follow through with the bleeder installation and bleeding.

Or your Napa could help you. I'd warn that you could have a mix of sizes, potentially different front to rear, or even left to right. The replacement wheel cylinder makers apparently don't feel the need to match original bleeder valve thread size, in my experience.

There are a bunch of videos on speed bleeders - how to use speed bleeders - Bing video

 

a ha! I am sure you are right - could be 4 different sizes given what the PO has done! So with the MC installed. I don't need to bench bleed do I? Just bleed all for brakes. Just watched a you tube and it looks like you pour in brake fluid in MC then bleed each brake by attaching hose and pressing brakes. No I am not very thread savvy and have found those displays terrifically helpful! To be honest I am thrilled I got the broken threads out but would love to avoid a trip to the garage just for a bleed. My new brake lights should be here today or Monday. thank you!!!

 

Medford mass?!? I am in Lynnfield - funny small world. Thanks for the help!

 

Hey, glad I could help!

Yep, that's pretty much it. Not sure about the bench bleeding - how much fluid did you lose? Bench bleeding is meant to get the air out of an empty new MC - I expect that there's still fluid in the MC but if you drained a lot it might be a problem.

 

Yeah, that's not far! I'm up by the Middlesex Fells, a little over a mile from the Stone Zoo.

 

awesome! I actually didn't see any bf on ground so I think it is mostly 'full'. Yep we take the little cousins to the Christmas light show at stone zoo. Cool area up there. Thanks for chiming in! By the way, did you know or ever hear of the Pioneer Garage in Peabody? It was a jeep garage that started in the early 40's. My relatives were part of that - I unfortunately inherited NONE of there jeep know how!

 

You mention having converted to a dual master cylinder therefore I would think you would only have to bleed the front or rear brakes - depending on where the switch is located. You could bleed with the small tube into a jar of clean brake fluid - leave your bleeders open and keep adding fluid to the master cylinder. Using a clear jar allows you to watch for air bubbles if you can get someone else to pump the brakes. I have an under seat fuel tank I bought from a gentleman selling off stock from Pioneer Jeep - not sure what his relationship was to the garage. He had a beautiful Black Jeep wagon with a lot of chrome and a hot rodded orange cj3a that he said came from the owners of the dealership.

 

Ha interesting. My uncle and his brother started the shop way back although the brother was the lead person. Phil who started working there in 77 inherited the biz. Now he runs it along with his two sons. I think I am going to check all 4 wheels for size and get speed bleeders. Something tells me I better be prepared to go through this again in the future. Thanks for the feedback. Cheers