David and Ruarid thank you.
I have not started on the front yet but just had a look and they do have a 2.6mm spacer between each shoe and the base of each cylinder and at the moment with old drums and part worn shoes - about 4.2mm lining in middle - the adjusters are at 5 clicks to get shoes against drum and just able to turn.

David or anyone do you have a back plate that you can measure the pivot block width to compare with my 36.7mm?
I seem to remember seeing someone somewhere had 39mm (can't remember where I saw that).
David adding up your gaps, that is 39 + 70 =109mm whilst mine is 111.2 mm (without taking spacers into account).

Just as an aside I have just realised that one cylinder is 7/8" (that is pre 1952 cylinder?) and the other is 3/4" which was the 1953 to 71 size BUT the length of both cylinders is the same at 55.12mm (Some sellers say that the later 3/4" can be used as a direct replacement)
(I hate the way the sellers of spares give vague descriptions and do not actually give the dimensions of what they are selling but sometimes just what car they are for). I just cant believe that there are Morrises running around out there also needing the spacers?

Location: NW Devon

Re a supplier of genuine Lockheed wheel cylinders and Lockheed equivalent (Delphi) shoes for the 7" brakes on the 1948 to 1953 Morris Series MM Minor (918cc side valve engine) / 1952 to 1956 Morris Series II Minor (803cc OHV) / 1956 to 1962 Morris Minor 1000 (948cc OHV)

The 1948 to 1962 rear wheel cylinders were 7/8" bore, the 1962 to 1971 were 3/4" bore. I believe these later 3/4" bore cylinders can be used as a replacement for the pre 1962 7/8" bore so long as both LH & RH cylinders are replaced at the same time - check with Bull Motif to make sure that information is correct.

Bull Motif Spares offer the following:

http://www.morrisminorspares.net/shop_item.php?ID=4209

http://www.morrisminorspares.net/shop_item.php?ID=1531

http://www.morrisminorspares.net/contact.htm

Bull Motif also supply non original i.e. pattern cylinders and shoes which are cheaper than the above parts.

Do check with their technical sales staff to make sure these parts do indeed match the ones on your Nippy.

Photo below is the set up on a Morris Series MM Minor rear backplate (not sure if one of the shoe springs isn't wrong though)



Jeff.

Location: Almost but not quite, the far North East of England

There should be a short spring in the middle of each brake shoe to hold the shoe back against the back plate. They have not been fitted, therefore I suspect that the person fitting the spring on the back of the shoes has done so to keep them flat.

2 different size snails available. Small ones (x2) for the front Morris brakes and a large one for the back, IIRC. I may have this 'backwards'.
Might this be the issue?

Location: Cardiff

Jeff thanks for picture and info.

Would you measure your pivot block to compare with mine.
My back plates are the modified Morris Minor to fit Austin Girling axles. They have the two little brackets welded on to take the "beehive" springs that hold the shoes against the back plates.

There are different length shoe pull off springs advertised for each of the two different springs on the back
mine are 4" between hooked bits (where they would rest on the shoe) for the spring with two short coils and 3" for the single coils.

Dennis

Location: NW Devon

Location: NW Devon

The pivot block is 37 mm Dennis measured in situ, I wasn't into dismantling the hub to get the shoes off

Location: NW Devon