Brake bleeding
Thread Starter
Pro
Joined: Nov 2011
Posts: 517
Likes: 20
From: Scroggins Tx
You remove the brake warning switch in the proportioning valve and screw this gizmo in. It keeps the valve centered while bleeding or so they say. Haven't tried it yet, but right now I can get nothing from the rear calipers.
Drifting
Joined: Jul 2009
Posts: 1,534
Likes: 14
From: Dallas-Fort Worth TX
I just did this on Sunday, I borrowed a Motive Brake Pressure Bleeder from a CF member. Never used it before. I do not enjoy working on brakes, esp bleeding. I hooked it all up. I did a fluid flush and bleed. It was pretty simple, besides the small mess I made. Pumped up the canister and cracked the bleed screws at each wheel and B fluid just poured out, along with any air bubbles and trash.
Pedal seems hard now, but no test drive just yet due to the rain, ice and now snow in 4 days. I was also concerned about the dist valve, but I got a solid fluid flow from all bleed screws including the 2 on each rear caliper. I recommend pressure bleeding.
Pedal seems hard now, but no test drive just yet due to the rain, ice and now snow in 4 days. I was also concerned about the dist valve, but I got a solid fluid flow from all bleed screws including the 2 on each rear caliper. I recommend pressure bleeding.
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,595
Likes: 7,043
From: New Or-leens Loo-z-anna
If the warning switch and dash warning light are working correctly, it will lite up when the piston moves off-center because of a brake fluid flow problem causing the piston to be forced to one end or the other in the metal body.
Last edited by doorgunner; Feb 25, 2015 at 12:54 PM.
Thread Starter
Pro
Joined: Nov 2011
Posts: 517
Likes: 20
From: Scroggins Tx
I first tried gravity and only got a very weak and slow drip and could not get any pedal. Then tried with the pedal and had good pressure out the front, but little to none in the rear. Still no pedal, so I am going with plan 3. New proportioning valve and a new Motive pressure bleeder. Every other thing with no exception in the brake system is new.
Still would like to hear from anybody that has used the centering tool and what they thought of it. Thanks, Dave
Still would like to hear from anybody that has used the centering tool and what they thought of it. Thanks, Dave
Last edited by oledave60; Feb 25, 2015 at 01:53 PM.
Le Mans Master
Joined: Oct 2006
Posts: 8,940
Likes: 35
From: El Cajon California
Bleed the brakes in the following fashion...
Left rear inner
Left rear outer
Right rear inner
Right rear outer
Left front
Right front
I just used a hose and my daughter to press the pedal down, nothing fancy
Left rear inner
Left rear outer
Right rear inner
Right rear outer
Left front
Right front
I just used a hose and my daughter to press the pedal down, nothing fancy
Last edited by Snoopysvet; Feb 25, 2015 at 02:39 PM.
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Le Mans Master
Joined: Aug 2010
Posts: 5,339
Likes: 546
From: Central Texas
Quote:
Still would like to hear from anybody that has used the centering tool and what they thought of it. Thanks, Dave
Dave I have used the tool. I kept having a problem with the brake warning light coming on not long after I bled the brakes. I figured the pressure on one side of the prop valve was not equal to the other. I put the tool in the prop valve and bled the brakes. The light has stayed off ever since. I wouldn't say that YOU need the tool unless you are having a problem with the valve centering after bleeding.
Bottom line = worth the $7 or $8 bucks that I spent for it.
Still would like to hear from anybody that has used the centering tool and what they thought of it. Thanks, Dave
Dave I have used the tool. I kept having a problem with the brake warning light coming on not long after I bled the brakes. I figured the pressure on one side of the prop valve was not equal to the other. I put the tool in the prop valve and bled the brakes. The light has stayed off ever since. I wouldn't say that YOU need the tool unless you are having a problem with the valve centering after bleeding.
Bottom line = worth the $7 or $8 bucks that I spent for it.
Instructor
Joined: Oct 2014
Posts: 215
Likes: 12
From: Conyers Georgia
I just did this on Sunday, I borrowed a Motive Brake Pressure Bleeder from a CF member. Never used it before. I do not enjoy working on brakes, esp bleeding. I hooked it all up. I did a fluid flush and bleed. It was pretty simple, besides the small mess I made. Pumped up the canister and cracked the bleed screws at each wheel and B fluid just poured out, along with any air bubbles and trash.
Pedal seems hard now, but no test drive just yet due to the rain, ice and now snow in 4 days. I was also concerned about the dist valve, but I got a solid fluid flow from all bleed screws including the 2 on each rear caliper. I recommend pressure bleeding.
Pedal seems hard now, but no test drive just yet due to the rain, ice and now snow in 4 days. I was also concerned about the dist valve, but I got a solid fluid flow from all bleed screws including the 2 on each rear caliper. I recommend pressure bleeding.
Motive Pressure Bleeder worked for me also.
Le Mans Master
Joined: Oct 2010
Posts: 6,936
Likes: 848
From: melbourne florida
2023 C3 of the Year Finalist - Modified
generally if it won't gravity bleed its a hose problem. i use the T shirt method. put an old tee shirt under each caliper crack the bleeders and let it flow, shut off each one as it runs clear.do the inner rears first then the outers. 
Le Mans Master
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
Drifting
Joined: Mar 2011
Posts: 1,347
Likes: 121
From: Kernersville NC
I first tried gravity and only got a very weak and slow drip and could not get any pedal. Then tried with the pedal and had good pressure out the front, but little to none in the rear. Still no pedal, so I am going with plan 3. New proportioning valve and a new Motive pressure bleeder. Every other thing with no exception in the brake system is new.
Still would like to hear from anybody that has used the centering tool and what they thought of it. Thanks, Dave
Still would like to hear from anybody that has used the centering tool and what they thought of it. Thanks, Dave
"In 2011 we started to make the 1105 and 1115 out of cast aluminum. We received the following tip from users that work on their classic Corvettes. We like the tip so much we're passing it on to you. Use a c-clamp to hold the adpater in place. It works great and is much faster to use than the chains. Also if you are using the chains and jhooks with wing nuts feel free to use a set of pliers on the wingnuts if needed to obtaing a tight seal. We recommend bleeding pressures between 10-15psi for the 1105 and 1115."
Drifting
Joined: Apr 2008
Posts: 1,305
Likes: 2
From: Lewisburg WV
thegazman
Quote:
Still would like to hear from anybody that has used the centering tool and what they thought of it. Thanks, Dave
Dave I have used the tool. I kept having a problem with the brake warning light coming on not long after I bled the brakes. I figured the pressure on one side of the prop valve was not equal to the other. I put the tool in the prop valve and bled the brakes. The light has stayed off ever since. I wouldn't say that YOU need the tool unless you are having a problem with the valve centering after bleeding.
Bottom line = worth the $7 or $8 bucks that I spent for it.
Still would like to hear from anybody that has used the centering tool and what they thought of it. Thanks, Dave
Dave I have used the tool. I kept having a problem with the brake warning light coming on not long after I bled the brakes. I figured the pressure on one side of the prop valve was not equal to the other. I put the tool in the prop valve and bled the brakes. The light has stayed off ever since. I wouldn't say that YOU need the tool unless you are having a problem with the valve centering after bleeding.
Bottom line = worth the $7 or $8 bucks that I spent for it.
