I am trying to get the inside out of my rear master cylinder?

Question

I have removed the circlip pushrod and steel washer, and I have had it soaking in solvent for 3 days and she will not budge, I have tried everthing to get that plunger out, Everyone says that air pressure will push it out, I tried 100 pounds air but she will not come out, anyone got a real idea, and not the repairman bit either, 1978 Honda CB750F

Answer 1

Have you checked for another one at a junkyard?
Sometimes it just isn't worth all that work because you'll find it's all corroded anyway when you do get it apart.
Does the piston move at all? Can you push it down and then try scraping out the back of the bore with a blade or something? If it doesn't move, junk it.

Answer 2

Listen to "auntiegrav". If it doesn't want to come out, it's probably to corroded for the new rebuild kit to work without leaking. I'd try to find another master cylinder. If you still want to try to get it apart, does the rod move in and out at all? Try grabbing the rod with a needle nose pliers and pry it out. Needle nose vice grip pliers might be best. I wouldn't waste my time trying to rebuild it.

Answer 3

Have you removed the circlip or the wire that holds the boot? the circlip is under boot and real dificult to get to/get out.
Did you ask at sohc.net as well ( I saw a post like this there)

Answer 4

Go to the motocycle's shop,the owner must have known almost everything.

Answer 5

Just an idea, but is it something you can gently apply some heat to?

Answer 6

take it to the dealer ship

Answer 7

rubber mallet and air.

Answer 8

dont know


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