Re Brake M/C

Post by **ruislipboy** » Wed Jun 10, 2009 10:42 am

Hope some one might be able to help me. A friend has been given a new brake m/c but it has been set up for use with disc brakes can he still use it on his car which is a 1968 four door Morris minor which just has normal brakes on it. As his m/c has gone u/s
Thanks

Post by **alex_holden** » Wed Jun 10, 2009 10:55 am

If it's a genuine Lockheed MC he could buy a repair kit, which would have the missing seal in it:
http://morrisminorspares.co.uk/shop/pro ... cts_id=470

Post by **jonathon** » Wed Jun 10, 2009 11:10 am

He will also need to swap the top cap and the rear one for the original items

Post by **bmcecosse** » Wed Jun 10, 2009 3:39 pm

Or fit disc brakes !
Don't see why it wouldn't work as is - will just need more regular adjustment of the brakes. That seal is present to take up slack in the system after the initial press of the pedal - but if not present, the brakes should still work ok - just may develop a long pedal rather more quickly.

Post by **les** » Wed Jun 10, 2009 9:48 pm

Best to fit the seal, don't mess with brakes, lockheed probably bothered for a reason!

Post by **rayofleamington** » Thu Jun 11, 2009 12:02 am

The cup seal alloys you to pump up the brakes when there's a small leak / some air in system.

As for the rear spigot for the external reservoir pipe - this can be blanked off very easily (been there, done that...)

Post by **alainmoran** » Thu Jun 11, 2009 1:20 am

If you have a spare M/C filling plug then I will buy it off you since I'm building a pressure bleed system at the moment and could use a new filler plug to replace the one I'm messing with.

Post by **bmcecosse** » Thu Jun 11, 2009 8:52 am

Does any other car have this 'pressure retention' feature in the braking system ? Eg Wolseley 1500/Austin A40 - cars that use very much similar/same brake parts - but with very different master cylinders. Certain that the early Minis with drum brakes did not have this feature.

Post by **les** » Thu Jun 11, 2009 7:24 pm

It may have something to do with the position of the m/c.

Post by **bmcecosse** » Thu Jun 11, 2009 11:38 pm

Indeed - you may be right! Yet there doesn't seem to be any problem when folks remove that seal - the brakes still work, and the rear cylinders then have no 'pressure retention' to keep them close to the drums.