I guess I need to replace my brake master cylinder
 

As the topic says. I guess I need to replace the frickin break master cylinder in my 95 Accord EX V6. [sm=headbang.gif]!
Sometimes the pedal goes to the floor on hot days. I seem to remember this problem a few times from last summer but I had forgotten about it till I drove it today and noticed it.
I just did a search and see that deserthonda has stated in every single case such as mine that it is pointless to bleed the brakes and I need to go ahead & replace the master cylinder.
One quick question: http://www.hondaautomotiveparts.com/...5=MASTER+POWER
Which one do I buy? Product No. 97628? or Product No. 97629?
They appear to be the same thing.

My wife is going to flip. She is so sick of spending money on her car! I know she is going to S*** a brick when I tell her we need to spend another $100 on it.

RE: I guess I need to replace my brake master cylinder
 

They are the same thing.

One was made by Adler and I think that the other one is Denso. They are basically identical.

RE: I guess I need to replace my brake master cylinder
 

Which one is the "genuine Honda part"? Either/or? By the way, how can you tell? Just wonderin.

RE: I guess I need to replace my brake master cylinder
 

Maybe both.I betHonda has 2 suppliers fora lot ofparts. It reduces their risk of a single supplier getting greedy or getting sloppy.

RE: I guess I need to replace my brake master cylinder
 

That's what I figured. Also, that way if one part is bunk or defective, the recall will only be for about 1/2 of the Honda's out there since only about 1/2 were built with that part. I wonder if one of the two is better than the other. I guess I'll go "recall huntin".

RE: I guess I need to replace my brake master cylinder
 

This may be a pointless thing to bring up but I recall talk of a simple little o-ring going bad on those master cylinders and replacing that forced the system to hold pressure, might be for a different issue though...

RE: I guess I need to replace my brake master cylinder
 

Maybe I'll research it a little more, but from what I gathered DH always said "replace it." That would truly suck though if I spent $100 on a new master cylinder when all that was wrong was a lousy O ring!

RE: I guess I need to replace my brake master cylinder
 

I don't ever take shortcuts with brake hydraulics. Properly working brakes are the most important thing for an operating car.

The $100 you spend on a new cylinder will ensure that you or your wife will not get injured in an accident.

RE: I guess I need to replace my brake master cylinder
 

I had the MC go bad in my '95 Integra. I searched all around & couldn't find internal parts to rebuild it.

Besides...
One very common reason for it to go bad like this, is corrosion or scratching in the bore. New seals won't fix that, and if it's deepenough then honing won't fix it either.

RE: I guess I need to replace my brake master cylinder
 

Sounds good guys. I trust you. I'll spend the $100 to be certain. The install doesn't look to be too bad. Although the bleeding process takes more than one person. I'll likely go to my dad's and have him "assist" me (Haha, he will likely take over and it'll be more like I'm "assisting" him!)I don't think he reallylikes towork onbrakes, but since DH posted the "How To" instructions, I think we will be OK. It looks pretty straightforward.

RE: I guess I need to replace my brake master cylinder
 

I replaced mine not too long ago. Its pretty simple.

I would suggest that you get a 10mm line wrench, so you don't strip the flared nuts going into the master cylinder.

Also, be careful when loosening the bleeders, because those threads can get rusty due to water, salt (for us northerners). I would soak them with PB blaster to help loosen them up.

Good luck.

RE: I guess I need to replace my brake master cylinder
 

have her get a new car with a $400 monthly payment. I'll be your repair bills are less than that

RE: I guess I need to replace my brake master cylinder
 

Haha.....That's what I keep telling her!!

RE: I guess I need to replace my brake master cylinder
 

So I replaced it this weekend. Thanks to deserthonda for his post on the bench bleeding process and how to bleed the brakes. This is the first time either myself or my dad have bled brakes. Somehow he was able to replace a master cylinder on another car a long time ago and never even had to bleed the brakes. Anywho...we did bench bleed the master as we were supposed to, however I think there was too long of a period of time fromwhen we unhooked the old master and put the new one in. I'm sure that is where we got air in the lines.Istupidly did not remove the vaccuum hose from the brake booster to ease in installation of the master. This madeone of the two mounting nutsnearly impossible to get to. When trying to reainstall the new master, I DROPPED one of the nuts. We were able to see it, but not get to it (and of course, we could not find a grabber tool anywhere.) This was about 10:30 onSaturday night. So wehooked up one of the nuts and installed the brake lines and let it sit overnight until we could go to AutoZone and find either a replacement nut or a grabber tool. We bought both onSunday at AZ.We were unable to locate the dropped nut to grab with the grabber tool (either myself or my dad must have moved it out of sight when attempting to pick it up with a long piece of wire) so we installedthe new nut. Then of course, we got everything backtogether (no leaks)and the brakes were spongy. We bled the brakes, and all is now well:D.