28-04-2021, 02:55 PM
I have gone through a full refurb of hydraulic brakes. The usual ones are the Lockheed. (Morris Minors) and quite a lot of info can be found about the various sizes of cylinders; front, rear, and master; on various MM websites.
Be aware that rear cylinders were 7/8 inch 1948 to 1962 then 3/4 inch 1962 to 1971. The 7/8 inch are generaly no longer available but the 3/4 inch fit directly in place. ..... (I found my rears had one 3/4 and one 7/8 fitted because of lack of knowledge of this info in the past!!!) Less pedal travel but more force though you probably wouldn't notice the difference in either after a change. I have actually changed from the MM master to Mini master cyl. (but easy to mount on a Nippy together with a set of pedal from, I think, a Mini. = get rid of the heavy awkward MM master and get rid of pedal with slots in floor so less draft!.
1962 - 1964 7/8 bore master cylinder as fitted to van is what I removed. and one from a 2016 Mini fitted.
There were also different widths of "standard" shoes.....7 inch by 1 1/4 inch seem to be the ones I have noted as being the ones that make full use of the Girling A7 cast drums width. 948 shoes 1.22 inch wide. (1 1/4 = 1.25 inches.....every little helps!!)
The larger snail cam is actually from the 8 inch brakes (and you will need to slightly file out the slot in the shoe to take the slightly larger pin and the slots in the snail base if you use the larger snail in the smaller snail base. Depends on which cylinder cap you have to take width of snail base. 8 inch brakes MM 1000 and 1098 front drums.
I have used the Silicone fluid for over 20,000 miles since 1988 and had no problems whereas previously had rusting and usual 2 yearly change of fluid.........the Silicon has never been changed since first fill and no paint has been striped as used to be with the other stuff. (Previously away at sea and battle with siezed cylinders every time I came home.)
Of course all rubber seals were new with new Silicone.
My shoes still need packing out to get them to touch drums even though new shoes and with new drums otherwise most of snail used up. This is both front and rear.
Have fun
Regards Dennis
Be aware that rear cylinders were 7/8 inch 1948 to 1962 then 3/4 inch 1962 to 1971. The 7/8 inch are generaly no longer available but the 3/4 inch fit directly in place. ..... (I found my rears had one 3/4 and one 7/8 fitted because of lack of knowledge of this info in the past!!!) Less pedal travel but more force though you probably wouldn't notice the difference in either after a change. I have actually changed from the MM master to Mini master cyl. (but easy to mount on a Nippy together with a set of pedal from, I think, a Mini. = get rid of the heavy awkward MM master and get rid of pedal with slots in floor so less draft!.
1962 - 1964 7/8 bore master cylinder as fitted to van is what I removed. and one from a 2016 Mini fitted.
There were also different widths of "standard" shoes.....7 inch by 1 1/4 inch seem to be the ones I have noted as being the ones that make full use of the Girling A7 cast drums width. 948 shoes 1.22 inch wide. (1 1/4 = 1.25 inches.....every little helps!!)
The larger snail cam is actually from the 8 inch brakes (and you will need to slightly file out the slot in the shoe to take the slightly larger pin and the slots in the snail base if you use the larger snail in the smaller snail base. Depends on which cylinder cap you have to take width of snail base. 8 inch brakes MM 1000 and 1098 front drums.
I have used the Silicone fluid for over 20,000 miles since 1988 and had no problems whereas previously had rusting and usual 2 yearly change of fluid.........the Silicon has never been changed since first fill and no paint has been striped as used to be with the other stuff. (Previously away at sea and battle with siezed cylinders every time I came home.)
Of course all rubber seals were new with new Silicone.
My shoes still need packing out to get them to touch drums even though new shoes and with new drums otherwise most of snail used up. This is both front and rear.
Have fun
Regards Dennis