master cylinder rebuild/replace

[Charger72SE]

after a couple buddies have lost brakes this year when their master cylinder seals gave out, I'm planning on rebuilding or replacing my master cylinder next year.  and since I don't know how old the brake fluid is, that can be done at the same time.

I was planning on getting the rebuild kit to keep the original master cylinder

does anyone have suggestions on how best to do this?  I looked through all my magazines and can't find an article on how to do it.

thanks for your help!

[Charger_Fan]

Master cylinders are pretty basic. The parts that wear out are usually limited to the rubber piston cups inside.
Here's a link that pretty much explains it; http://autorepair.about.com/od/otherodddiyjobs/l/aa092504b.htm
They're rebuilding a newer m/c, but the basic idea is exactly the same as yours.

[whitehatspecial]

The hardest part is getting the damn thing out. One of the nuts is a real pain to get to...while laying on your stomach looking up under the drivers side footwell.

[Charger72SE]

thanks guys!!!! 

[daytonalo]

Ive rebuilt many of them , make sure you buy a master cyl hone , its a must !!!!!!!!!!

[Charger72SE]

thanks for the heads-up Daytonalo

I heard you can buy the hone at most auto parts stores that go on your drill

[tan top]

if it is the original  , don't be surprised if the bore of the master cylinder has been badly eaten in to by rust , when i done mine, the in side looked like it had been at the bottom of the Atlantic ocean for 40 years    reason not changing the brake fluid frequently .  the only way when they are this bad is to have them sleeved if you want to save the original . hopefully  yours is ok and just needs a hone like  (Daytonalo) says 

[daytonalo]

As far as pitting goes , always , always , always use dot 5 [silicone] ! I'm surprised how many people install reg fluid in classic cars . I have been swapping out reg fluid for 15 years with no problems at all , if a person needs to ask why its better , they need to do their homework or get a new hobby