Brake Pushrod Differences

I am converting the single reservior master cylinder on my '60 cj5 to a dual reservior setup. I got the stock dual setup from a 1970 cj5 v6. My question is, do the '69-'71 V6 models use a different pushrod than the '69-'71 4 cylinder models? I ask because the pushrod I got with the setup from the '70 v6 does not fit the pin on my '60 4 cylinder pedal setup. it is too large of a diameter.

Tha attached picture shows the stock pedal assembly for the dual reservior setup. you can see the pin on the pedal is "stepped". the pin on my '60 4 cylinder pedal is not "stepped", it's entire length is the smaller diameter, so the pushrod is extremely loose on it. i can easily find a bushing to correct this problem, but i am curious if the attached picture depicts a v6 specific dual reservior setup, or if it depicts the dual reservior setup used on all '69-'71 models? if it is the setup for all '69-'71 models, then it must be the pin on the pedal that changed with the introduction of the dual reservior setup and all dual reservior setups then use this larger diameter pushrod, while the single reservior setup uses a smaller diameter pushrod. can anyone tell me what the case is?

with all the dual reservior conversions done around here, i'm sure someone has run into what i am attempting to explain. i hope i didn't loose anybody..... i know i had to read it over a couple of times.....

 

The pin on the v6 models is stepped, I made a new one for Lynn's pedal arm about a year or so ago and pressed it on and re-peened it.

 

okay, so then the pushrod used for the dual reservior setup is different between 4 and 6 cylinder models?

 

thats right lynn. that is what i'm wondering.

 

Holy cow I just went thru this. Trying to remember....

I've at least got a few spare rods lying around, all with diffo inner diameters and lengths. If I recall correctly (IIRC), the smaller of the "stepped" protuberance is fashioned with a hole for a cotter key, no?

Linck, do you know the dimensions of the rod you're desiring? I can check my spares to see if'n any'd work for you.

 

The push rod is different, and the brake pedal is different as well. The pushrod for the dual m/c has a larger hole in it than the single.

So the stud coming off of the brake pedal is smaller for the single cylinder.

You ought to be able to fabricate a stud, or if not, I think that turner 4wd will be able to help you

1-800-the-jeep

I would not try to adapt the 4 cylinder push rod, but adapt (or replace) the parts necessary to make the dual push rod work.

 

ok, so you're saying the pushrod is different for the dual reservior setup vs. the single reservior setup. i figured that was the case. i'm wondering if the pushrod for the dual setup for a 4 cylinder is different than the pushrod for the dual setup for a 6 cylinder?

i do not plan to adapt the single reservior pushrod to work on the dual setup. i plan to make a sleeve to adapt my '60 4 cylinder pedal to work with the '70 dual reservior pushrod. as far as i can tell, its simply a matter of making a sleeve to make it work.

 

that answers my question. so my options are to get a pedal from a dual reservior setup, or to make a sleeve to adapt my single reservior pedal to work with a dual reservior pushrod.

thanks for the pic brian. i'm sure this thread will help out people doing this conversion in the future.

 

oh, one more thing....
brian, could you measure the length of the pin that the pushrod attaches to?
i would like 2 measurements. see the attached picture. i'd like to know the distance between:
1) the blue and green line
2) the blue and red line

thanks again