New to the forum. My grandfather owns a 31 Plymouth and we are looking to rebuild the wheel cylinders. Does anyone make a rebuild kit for these? Or does anyone know the bore for front and rear? Are they comparable with a newer vehicle that parts are still available for? Thanks in advance.....how do you put up a picture on here?
The wheel cylinder assembly is Chrysler part number 79190 which was used on all four wheels for 1928-32 and for the front wheels on 1933-34.
I would guess that "the usual" suspects (Roberts, Bernbaum, etc.) would have rebuild kits and/or replacement cylinders.
However, you might check your local yellow pages for the brake supply company. This is the firm in your area that supplies the local garages and/or auto supply stores. You will find that they can match up the inside parts with fresh stock (a number of the specialty antique car places have had their kits on the shelves for years and rubber goes bad from sitting). The only part that might be a problem for you to get locally is the rubber dust boots.
As of the time I did my brakes (my 1933 uses the same cylinder as yours) I could not get an exact match for replacement cylinder but was able to find one locally with a 1 3/8 inch bore (the original is 1 1/4 inch).
You might want to consider sending them to White Post Restorations in VA. They bore them out and install a Brass sleeve, no more corrosion. I had them do my 31 and they are great. My guess is that your master cycl. is in the same shape and needs rebuilding. They come back ready to install and I felt the price was reasonable.