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Hey folks,
Can any of you provide information on the adjustment of the brake pedal. I know there is an adjustment screw on the pedal arm that adjusts were it stop when coming up. There is also an adjustment of the plunger where it enters the master cylinder.
Is there any documentation on how these two should be adjusted?
I just replaced the master cylinder and rebuilt the wheel cylinders on one of the front wheels, they are bled and everything seems to be working just fine.
This is for my 1950 Desoto custom.
Adjust it until it is in firm contact with the piston in the MC, then back it off half a turn. Should be close enough. If it is too tight, the brakes may lock up after several braking attempts. Too loose isn't good either, should be just a touch of play..
Have a nice day
Steve
Here is info on brake pedal free play adjustment from the shop manual.
- Igor.
I'm having some problem with attachments not showing up... Hope you'll see the images below:
Thank you for the images. I have several manuals and haves seen these before. My issue had to do with adjusting the plunger and the stop screw on the pedal down near the base of the pedal.
Again thanks folks.
Darin,
I can't find any instructions on adjusting screw on the pedal arm, however, looking at my car which currently doesn't have engine and front clip installed (I have a nice unobstructed view), I think that screw on the pedal arm is for adjusting pedal relative "start" position. I would start with this adjustment making sure that pedal's rubber boot (draft pad) is pressed firmly enough against opening in the firewall cover. Once it's done, I would adjust "plunger" screw so that the pedal's free play (A) would be within 1/8 to 1/4 inch as specified. This free play is defined by the clearance (A) between the push rod (9) and the piston (14) as shown in Fig.4 and is adjusted by the push rod nut (8). This is the free play where pedal should move free until brake fluid is starting to be pushed through the relief port B. If for some reason plunger nut won't be enough to achieve this clearance, I would try to play with that screw on the pedal arm to try to work both adjustments together.
This is only a suggestion based on my observation, as I have not done this adjustment myself yet; if someone knows better - please come forward and correct me.
Hope this helps,
- Igor.
Thanks Igor,
You have confirmed my suspicions and I will leave this alone for now. I will do the other adjustments and see how it goes.
I think at this point Ineed to bleed the brakes also.
