Wrong Pedal to the floor
Thread Starter
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
You would be surprised at the amount of Summit, Jegs & Amazon products for sale on eBay w/ free shpg.
Inconspicuous address locations and non-logo labeled boxes.
Inconspicuous address locations and non-logo labeled boxes.
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
i wonder how much is a middleman ordering off summitjegszon and ship to you and make a few cents each order without owning or handling any inventory.
Le Mans Master
Joined: May 2007
Posts: 5,031
Likes: 1,121
From: North tonawanda NY
Not surprised at all actually I have bought many things on ebay from them by pure coincidence and your totally right since I usually go for the free shipping.
Burning Brakes
Joined: Sep 2009
Posts: 1,124
Likes: 140
From: Western New York
Augiedoggy, Thanks for this information. I ordered one of these aluminum ones on Ebay last night. I rebuilt all 4 calipers with the O ring kits and a new master cylinder, but couldn't get a pedal. After talking to a GM tech, he told me about the proportioning valve. Before I did the rebuild, I had a failure at the right rear caliper, and that most likely caused the piston inside to shift out of position. After I removed the switch from the prop. valve I could see that the piston was not centered, and that's where I found your post and ordered the tool. When the tool arrives, I'll have to center the valve and then insert it before I bleed all 4 corners. Luckily, the GM tech shared with me the procedure for centering the piston once it's been pushed out of place. By the way, did you notice where I live??? What a coincidence. Take care and thanks again.
Instructor
Joined: Dec 2016
Posts: 245
Likes: 132
From: Port Coquitlam BC
Augiedoggy, Thanks for this information. I ordered one of these aluminum ones on Ebay last night. I rebuilt all 4 calipers with the O ring kits and a new master cylinder, but couldn't get a pedal. After talking to a GM tech, he told me about the proportioning valve. Before I did the rebuild, I had a failure at the right rear caliper, and that most likely caused the piston inside to shift out of position. After I removed the switch from the prop. valve I could see that the piston was not centered, and that's where I found your post and ordered the tool. When the tool arrives, I'll have to center the valve and then insert it before I bleed all 4 corners. Luckily, the GM tech shared with me the procedure for centering the piston once it's been pushed out of place. By the way, did you notice where I live??? What a coincidence. Take care and thanks again.
TIA for the help!
Rob
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
Thread Starter
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
To re-center the piston in the proportioning valve, all bleeders must be closed, and all leaks have been addressed and repaired.
Then, usually 2-3 quick jabs of the brake pedal will reset the piston because of equal pressure front/ back. Unequal pressure from a leak is what tripped the valve / piston in the first place.
To prevent re-tripping the prop valve, a small tool inserted in place of the warning switch and will hold the piston in place. This tool is for all those that brake bleed using the pedal method. Then swap it back when done and install wire.
The tool can be had for about $15.
Then, usually 2-3 quick jabs of the brake pedal will reset the piston because of equal pressure front/ back. Unequal pressure from a leak is what tripped the valve / piston in the first place.
To prevent re-tripping the prop valve, a small tool inserted in place of the warning switch and will hold the piston in place. This tool is for all those that brake bleed using the pedal method. Then swap it back when done and install wire.
The tool can be had for about $15.
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