might have to change the brake master cylinder in my 90 civiv hb...any special tools,steps that are needed when doing so...a simple walk through will be greatly appreciated,and pics might help a lil...thanks a million ef owners..

 

Uhh... unbolt everything on/around the master cylinder, remove from car, cap off brake lines to prevent lots of dripping. Take new master cylinder + bench bleed excessively, then install. Finally, bleed brakes Pretty easy!

 

ok...how do u bench bleed and that will be all i need..and thanks again...

 

My calipers (edit: MC, not calipers) came with a bench bleeding kit. If yours don't, pick one up. You could always make one, but they're just cheap plastic parts and they save you a lot of headache. Search the archives for the procedure or follow the instructions with the kit. Your goal is to pump all of the air out the output lines and back into the reservoir. You can technically do it on the car, but it's WAY easier on the bench...faster too.


Modified by travis at 1:58 PM 2/5/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by travis &raquo;</TD></TR><TR><TD CLASS="quote">My calipers came with a bench bleeding kit. If yours don't, pick one up. You could always make one, but they're just cheap plastic parts and they save you a lot of headache. Search the archives for the procedure or follow the instructions with the kit. Your goal is to pump all of the air out the output lines and back into the reservoir. You can technically do it on the car, but it's WAY easier on the bench...faster too.</TD></TR></TABLE>

ok first off im not buying calipers,im buying a master cylinder so wher the calipers came from i dont know...and i search for bench bleeding but wasnt very happy with the search results...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by teg-your-it &raquo;</TD></TR><TR><TD CLASS="quote">

ok first off im not buying calipers,im buying a master cylinder so wher the calipers came from i dont know...and i search for bench bleeding but wasnt very happy with the search results...</TD></TR></TABLE>

Ah jeez, I wasn't paying attention. Sorry. I should have said that the MC came with the kit, not the calipers (I did those at the same time and that's what I was picturing in my head when I wrote that). Anyway, the MC had the kit. It's basically two plastic and threaded hose ends that screw into the output holes. You connect two clear plastic tubes to these hose ends and feed them back into the reservoir. Mount the MC to a vice, fill with brake fluid, and slowly pump the piston in very short strokes to pump the air out the tubes and recirculate the fluid back into the reservoir. After a while, there will be nothing but fluid coming out the tubes and you're done. Again, it's the same as bleeding the brakes while the MC is on the car, but you have to pump forever when it's on the car and you pump all that air through the lines at the same time.

 

also, the MC has to be set in properly in the vice. I can't remember if it's supposed to be set in at a slight angle or if it's supposed to be flat. You'll have to check. The reasoning is that you are trying to get all the air out of the chamber in the MC. If you don't have it positioned correctly then a small air bubble will have the opportunity to trap itself in a corner inside the master cylinder.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4drEF &raquo;</TD></TR><TR><TD CLASS="quote">also, the MC has to be set in properly in the vice. I can't remember if it's supposed to be set in at a slight angle or if it's supposed to be flat. You'll have to check. The reasoning is that you are trying to get all the air out of the chamber in the MC. If you don't have it positioned correctly then a small air bubble will have the opportunity to trap itself in a corner inside the master cylinder.</TD></TR></TABLE>

can anyone else verify this...and if so at what angle should it be placed in a vice...thanks guys...so far seems straight through for me to do myself....first im going to completely flush the old brake fluid out ,its literaly black.and refill with fresh fluid and hopefully i wont need the mc....