Honda Car Forum

'sup all,

I've got a 1993 Honda Accord and I'm going to change my master
cylinder, as well as replace the brake fluid that's in there. I was
thinking about letting gravity drain the fluid from the reservoir and
replace the fluid as it drains. Is that a good idea? I wonder if I
don't get it all out, how would the two different (assuming just
different in age) behave together? Old vs. New. I guess I should get
a little bit more fluid to drain it good.

Then I was going to replace the Master Cylinder. I need to take the
brake hoses off, but do I drain the reservoir first? Maybe until
almost empty. my main quandry is How does air not get into the brake
lines when I unscrew them from the old master cylinder?

How much brake fluid does anyone recommend I should get to drain
the system fully and put the new MC on? I was thinking one of those
big bottles, like 1Ltr. or something would do, though I don't know how
much fluid the system even contains.

Could anyone help me with this? How much brake fluid is in the
system? I don't want to run out, but I don't know what I'd do with
alot of extra fluid either. maybe I'll just flush until I have enough
to fill the MC plus a little bit more for later <grin>

In article <1147300942.374425.99370@i39g2000cwa.googlegroups. com>,
boxfreedom@yahoo.com says...
>'sup all,
>
> I've got a 1993 Honda Accord and I'm going to change my master
>cylinder, as well as replace the brake fluid that's in there. I was
>thinking about letting gravity drain the fluid from the reservoir and
>replace the fluid as it drains. Is that a good idea? I wonder if I
>don't get it all out, how would the two different (assuming just
>different in age) behave together? Old vs. New. I guess I should get
>a little bit more fluid to drain it good.

Since you are replacing the MC anyway, open the bleeders and pump away.
Just make sure you have a container to catch brake fluid as it comes out.


>Then I was going to replace the Master Cylinder. I need to take the
>brake hoses off, but do I drain the reservoir first? Maybe until
>almost empty. my main quandry is How does air not get into the brake
>lines when I unscrew them from the old master cylinder?

Don't worry about air in the system while you take it apart. You get
rid of the air in the system after all the new parts are in and you have
assembled everything. That's why you always bleed when you are done.

> How much brake fluid does anyone recommend I should get to drain
>the system fully and put the new MC on? I was thinking one of those
>big bottles, like 1Ltr. or something would do, though I don't know how
>much fluid the system even contains.
> Could anyone help me with this? How much brake fluid is in the
>system? I don't want to run out, but I don't know what I'd do with
>alot of extra fluid either. maybe I'll just flush until I have enough
>to fill the MC plus a little bit more for later <grin>

A 1 quart bottle may be cutting it close. I would get quart bottle and one
small bottle. Keep the small bottle sealed until you are sure you will need
it.

-------------
Alex

Thanks Alex,
yeah, I was a little concerned about air in the lines once I took
the brake lines out of the old master cylinder, but I guess when I
bleed them that will get the air out.

Thanks again..

Make sure to use a flare nut wrench to take off the brake lines from the MC.
Using a regular wrench could strip the bolt or worse, do damage to the line.

Nick

On 12 May 2006 05:36:53 -0700, "scube" <boxfreedom@yahoo.com> wrote:

>Thanks Alex,
> yeah, I was a little concerned about air in the lines once I took
>the brake lines out of the old master cylinder, but I guess when I
>bleed them that will get the air out.
>
>Thanks again..

Well, I bought a refurbished MC and a flare wrench. I just need the
time to get at it. I am worried about what the outcome will be on my
brakes freeplay. I guess I need 5mm of freeplay from the car floor to
the back of the pedal.
My concern is adjusting that pushrod/brake sheme...

Oh well... we'll see.