Dumb Master Cylinder Question

I pulled my master cylinder to rebuild it and in forcing it apart was unable to determine the order for reassembly.
I checked my manual but as I have a single cylinder and the manual is for a system with a dual, it's not much help.
I do plan to do some brake upgrades but want to drive the jeep for a couple months to get familiar with where I'm starting out and what I need.
I got the old cylinder honed and a parts kit on the bench, if someone could just send me a pic or link to the assembly order, I'd appreciate it.

1967 CJ-5 with the V6, it seems odd that it has a single circuit system. I do have an external cylinder that hooks up as part of a tow hitch. Was that a factory last-gasp before going to a dual system or did it get changed to facilitate towing back in the day?

 

Didn't change until the Federal safety standards forced the change in 1969.

 

I've never rebuilt one, they are pretty cheap off the shelf, around $40 if I remember right. Food for thought if you give up.

 

Just buy a replacement. Not worth the effort to rebuild at the cost, and too important to have fail.

 

I appreciate keeping things as original as I can conveniently manage.
Regarding the importance of the system, I trust my assembly and inspection process far more than the low-wage worker or robot in China or Mexico.
I've never had a failure in a cylinder I have rebuilt, but I have had to take a brand-new or bought rebuilt cylinder back to the store for a replacement.

 

I have a working Master like yours that I will give you if you want it. I just replaced it with a dual cylinder recently. PM me and we can figure out details if you want it.

 

Try this link for a picture of a single circuit master cylinder. Should answer your question. FWIW I would put a dual circuit master cylinder high on the priority list.

Redirect Notice

 

The mandate was actually enacted in 1967 but there was a grace period for those vehicles already in production or on the assembly line. Some '67's had dual some didn't.

 

I'm afraid this link is now a redirect notice and dead. Any chance of another, or general directions of how to get there?

I am generally well-disposed to dual circuit systems as I had a total failure in my 1953 Dodge many years ago as well as my 1953 REO M45. OTOH, more recently I had a 56 Willys truck for a decade where the original brakes gave excellent service, though I would have changed to a dual system for piece of mind had I known such a conversion was as easy as I gather it now is.

thanks,

 

This picture should answer your question.

 

Perfect, thanks much.

 

I got the cylinder rebuilt and installed. I found something interesting while bleeding the brakes though. The rear brake hose (from the body to axle) was completely blocked, this despite feeling and looking fine in terms of not being cracked or particularly hard. I wonder how many of us are suffering less-than-ideal braking as a result of partly blocked hoses.
Needless to say, I've ordered replacements for the front hoses as well!

 

Is the duel master cylinder a direct bolt on, then just make up new brake lines?

 

I noticed Herm (the overdrive guy) has kits to do dual circuit conversions that include brackets and such.

 

Thanks for the reply. I will look into it.