Suspension/Wheels/Tires/Brakes

Replacing caliper. How can I minimize the amount of air going into the lines?

Thread Tools
 
Search this Thread
 
Old 08-11-10, 03:38 PM
  #1  
Insane Burning Diarrhea

Thread Starter
 
SayNoToPistons's Avatar
 
Join Date: Apr 2005
Location: Noo Yawk City / San Diego
Posts: 1,796
Likes: 0
Received 0 Likes on 0 Posts
Replacing caliper. How can I minimize the amount of air going into the lines?

I am replacing one of the rear calipers. Of course that requires the line to be taken off. Any suggestions on what to do to minimize the amount of air that will travel into the lines during the brake job? I will be bleeding it after of course.
Old 08-11-10, 03:56 PM
  #2  
SINFUL7

iTrader: (37)
 
KaiFD3S's Avatar
 
Join Date: Apr 2004
Location: Alaska
Posts: 6,574
Received 1 Like on 1 Post
Not sure if there is much you can do other than just bleed it good when you install the new set, only other thing you can do is find a closed nut with the same thread or a rubber cap that will fit snug at the end of the line and as soon as you take the line off cap it.

When I did mine I just unbolted the old caliper while the line still on, then installed the new caliper with the steel braded line, then unhooked the old line then immediatly connected the new one to the hard line, just bled it good and had no issues.
Old 08-11-10, 04:03 PM
  #3  
Manual Rack

iTrader: (50)
 
FelixIsGod29X's Avatar
 
Join Date: Aug 2005
Location: Wanaque NJ
Posts: 3,652
Likes: 0
Received 1 Like on 1 Post
Nothing in the world can prevent you from bleeding the brakes once you disconnect the line. I recently changed both rear calipers/pads. I just disconnect/reconnect as quickly as i could. I went around the block without bleeding it and i still has pressure but barely. I bleed it shortly after and its all gravy now. Doesnt take long at all to do, make sure you got a buddy with you and extra brake fluid. Should flush the system anyways.
Old 08-11-10, 09:04 PM
  #4  
Im a tall midget.
iTrader: (28)
 
Juan's Avatar
 
Join Date: Feb 2001
Location: So Cal, USA
Posts: 3,131
Likes: 0
Received 6 Likes on 5 Posts
Originally Posted by KaiFD3S
Not sure if there is much you can do other than just bleed it good when you install the new set, only other thing you can do is find a closed nut with the same thread or a rubber cap that will fit snug at the end of the line and as soon as you take the line off cap it.
I've used rubber vacuum caps to quickly cap the hard lines when I have to remove calipers. Replace the caliper and give it a quick bleeding. It will only take a minute to bleed. You dont have to bleed the other calipers.
Old 08-12-10, 01:33 AM
  #5  
Insane Burning Diarrhea

Thread Starter
 
SayNoToPistons's Avatar
 
Join Date: Apr 2005
Location: Noo Yawk City / San Diego
Posts: 1,796
Likes: 0
Received 0 Likes on 0 Posts
There is another obstacle. The bleeder valve on the new caliper is mangled. I am assuming that someone must have dropped the caliper on it. Instead of purchasing a new one, I was thinking of using the one from the faulty caliper. Any suggestions towards this?
Old 08-12-10, 01:42 AM
  #6  
Im a tall midget.
iTrader: (28)
 
Juan's Avatar
 
Join Date: Feb 2001
Location: So Cal, USA
Posts: 3,131
Likes: 0
Received 6 Likes on 5 Posts
Its pretty straightforward. Remove the bleeder valve from the old caliper and use it on the new good caliper. Give it a quick bleed and you're good to go.
Old 08-12-10, 02:52 AM
  #7  
Insane Burning Diarrhea

Thread Starter
 
SayNoToPistons's Avatar
 
Join Date: Apr 2005
Location: Noo Yawk City / San Diego
Posts: 1,796
Likes: 0
Received 0 Likes on 0 Posts
I guess I am being too ****. I have heard stories where the ABS system might get air in it from removal of the caliper, which can lead to the ultimatum of having the dealer purge the ABS system of air. Oh well.
Old 08-12-10, 03:47 AM
  #8  
Bubblicious DEF.

iTrader: (36)
 
muibubbles's Avatar
 
Join Date: May 2008
Location: 732
Posts: 4,265
Likes: 0
Received 4 Likes on 4 Posts
how many miles since u last flushed it? id just bleed all the old fluids out with new fluids.....
Old 08-12-10, 01:17 PM
  #9  
Insane Burning Diarrhea

Thread Starter
 
SayNoToPistons's Avatar
 
Join Date: Apr 2005
Location: Noo Yawk City / San Diego
Posts: 1,796
Likes: 0
Received 0 Likes on 0 Posts
They were flushed a week ago during the last brake job. A temporary fix was done to the faulty caliper, but now my new caliper has arrived and it is time to swap that in.
Old 08-13-10, 08:06 PM
  #10  
Rotary Freak

iTrader: (3)
 
Josh18_2k's Avatar
 
Join Date: Jan 2003
Location: Gresham, OR
Posts: 2,024
Likes: 0
Received 1 Like on 1 Post
highly recommend speed bleeders. should be the first "mod" anyone does to a car. i bleed my brakes by myself in about 15min (including tire removal). i have one on my clutch too

they're ~$13 a pair at any decent auto parts store, or summit/jegs/etc.

for RX8 -
Front: M8 X 1.0
Rear: M10 X 1.0
Old 08-14-10, 11:18 PM
  #11  
Eye In The Sky

iTrader: (2)
 
cewrx7r1's Avatar
 
Join Date: Feb 2001
Location: In A Disfunctional World
Posts: 7,894
Likes: 0
Received 114 Likes on 66 Posts
Originally Posted by SayNoToPistons
I have heard stories where the ABS system might get air in it from removal of the caliper
Who ever told you that was a complete *!***% idiot.
The only way that may happened is if the master cylinder was also replaced, or the idiot bleeding the calipers did not keep the reservoir full.

I have pulled and rebuilt all of my 4 calipers, install front and rear BBKs, and even changed my master cylinder to a 929 unit; and never had any problems bleeding the system. Either I am F** good or the others are idiots.
Old 08-16-10, 06:33 PM
  #12  
Lives on the Forum

iTrader: (9)
 
ptrhahn's Avatar
 
Join Date: Feb 2002
Location: Arlington, VA
Posts: 9,027
Received 500 Likes on 274 Posts
1. Take this opportunity to put speed bleeders in your new calipers.

2. Remove old caliper and cap line w/ rubber cap. Be sure you don't lose enough fluid to run the reservoir down below the "low" line.

3. Install new caliper.

4. Bleed brakes.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
Frisky Arab
2nd Generation Specific (1986-1992)
13
08-18-15 05:30 PM
GrossPolluter
2nd Generation Specific (1986-1992)
4
08-16-15 09:50 AM



Quick Reply: Replacing caliper. How can I minimize the amount of air going into the lines?



All times are GMT -5. The time now is 03:41 AM.