Bleeding the brakes... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Prerunner1982 · 08-10-2003, 12:43 AM

just a quick question.... is there a certain way to bleed the brakes.. as far as a certain order.. front left... front right.. left rear.. right rear? i fixed the broken brake line filled it with fluid and tried to bleed the brakes started at the rear and couldnt get anything to work.. will give it another shot tues.

crackajacka · 08-10-2003, 01:01 AM

last time i sorta bled the brakes is when i had to change the master cylinder and i did front to back and i used like another couple of bottles of fluid. i thought about upgrading my brakes to heavy duty disc's all around but it was recomended that i used that dot 5 silicone brake fluid that stuff is like 9 bucks for the little bottle imagine bleeding that

**old Rusty C10** · 08-10-2003, 09:46 AM

jon you bleed the brakes the way you described i ususally have an assistant pump the sh%t outta the brakes then i start the bleeding you go closest to the furthest and dont listen to the people who tell ya right rear first and left rear last

**swervin ervin** · 08-10-2003, 10:09 PM

Just a piece of advice, don't pump them real fast. About 2 good slow pumps and then hold the pedal. If you pump them fast it will churn the fluid in the resevoir and could cause bubbles.

Prerunner1982 · 08-11-2003, 04:21 AM

ok well.... i bled the brakes tonight.. or lets put it this way i got fluid to come out of them by pumping and holding the brake pedal and bleeding them closest to furthest..nothing has changed, the pedal still drops to the floor when you press on it.. the last 1/2" the brakes work.. the first 6 or 7" they dont..

master cylinder maybe? (if so...price?) i dont have a clue.....

**N2TRUX** · 08-11-2003, 11:03 AM

You might have air trapped at the master cylinder. Try taking it off and bench bleeding it, then re-bleed the wheel cylinders. If that doesn't do it, the master cylinder could be shot too...

SCOTI · 08-11-2003, 11:50 AM

Instead of taking it off the truck to bench bleed, simply unbolt the brake lines from the master cyl, then install the bleeding plugs & submerge the lines into the mstr.cyl. & slowly pump the brake pedal until no air bubbles are seen.

Hook the lines back up & re-bleed the system. When I was having trouble w/mine, I went & got 4 clear bottles (1 for each wheel cylinder/caliper) & put a small length of vac line on each bleeder screw. This way I never allowed any air in the vacuum lines (since I left them in place while moving from farthest to closest) & I could monitor the bleeding results better.

Also FWIW, I always have my lovely assistant pump the pedal down until she reaches the end of travel & hold it there until I let her know I've got the bleeder screw fully opened/closed, then she slowly lets it all the way up. I don't pump the brakes more than once. I do each corner 3 seperate times before moving to the next, & refill the mstr.cyl. fluid level after each corner . I used a full qt. of fluid before getting all the air out of my 74.

Prerunner1982 · 08-11-2003, 12:32 PM

i have never done brakes before... i will try bleeding them again. i am not real sure about bleeding the master cylinder. where do i get bleeding plugs? i will give it a shot though......thanks guys!

SCOTI · 08-11-2003, 03:33 PM

Usually when you purchase a new mstr.cyl. they will include bleeding plugs & small lengths of vac tubing. Try your local parts house, they should have some extras somewhere. They're just some plastic plugs that thread into the front & rear ports & allow you to connect the vac tubing to be able to bleed the mstr.cyl.

boataddict26 · 08-11-2003, 09:37 PM

The way I have always bleed brake lines, was like everyone has been saying, W/ the assistant and all. But have always pumped the petal slowly until it was really firm and would only go about half way to the floor. Then open the valve slowly, let any air out, and close it. Repeat until nothing but fluid comes out.

**swervin ervin** · 08-11-2003, 09:48 PM

I use my Miteyvac now. I've graduated past the pedal pumping and requiring an assistant. Last time I tried to get my wife to help and hearing her complain (or is the word *****?) about her leg getting tired was the straw that broke the camels back. I ordered the Miteyvac the next day.

It gets lonely when you don't need help to fix stuff, but it sure is a lot easier on the ears.

08-10-2003, 12:43 AM	#1
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,906	Bleeding the brakes... just a quick question.... is there a certain way to bleed the brakes.. as far as a certain order.. front left... front right.. left rear.. right rear? i fixed the broken brake line filled it with fluid and tried to bleed the brakes started at the rear and couldnt get anything to work.. will give it another shot tues. __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

08-10-2003, 01:01 AM	#2
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	last time i sorta bled the brakes is when i had to change the master cylinder and i did front to back and i used like another couple of bottles of fluid. i thought about upgrading my brakes to heavy duty disc's all around but it was recomended that i used that dot 5 silicone brake fluid that stuff is like 9 bucks for the little bottle imagine bleeding that __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

08-10-2003, 09:46 AM	#3
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,287	jon you bleed the brakes the way you described i ususally have an assistant pump the sh%t outta the brakes then i start the bleeding you go closest to the furthest and dont listen to the people who tell ya right rear first and left rear last __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

08-10-2003, 10:09 PM	#4
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	Just a piece of advice, don't pump them real fast. About 2 good slow pumps and then hold the pedal. If you pump them fast it will churn the fluid in the resevoir and could cause bubbles. __________________ Mike 1985 Chevy C-10

08-11-2003, 04:21 AM	#5
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,906	ok well.... i bled the brakes tonight.. or lets put it this way i got fluid to come out of them by pumping and holding the brake pedal and bleeding them closest to furthest..nothing has changed, the pedal still drops to the floor when you press on it.. the last 1/2" the brakes work.. the first 6 or 7" they dont.. master cylinder maybe? (if so...price?) i dont have a clue..... __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

08-11-2003, 11:03 AM	#6
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,023	You might have air trapped at the master cylinder. Try taking it off and bench bleeding it, then re-bleed the wheel cylinders. If that doesn't do it, the master cylinder could be shot too... __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

08-11-2003, 11:50 AM	#7
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,963	Instead of taking it off the truck to bench bleed, simply unbolt the brake lines from the master cyl, then install the bleeding plugs & submerge the lines into the mstr.cyl. & slowly pump the brake pedal until no air bubbles are seen. Hook the lines back up & re-bleed the system. When I was having trouble w/mine, I went & got 4 clear bottles (1 for each wheel cylinder/caliper) & put a small length of vac line on each bleeder screw. This way I never allowed any air in the vacuum lines (since I left them in place while moving from farthest to closest) & I could monitor the bleeding results better. Also FWIW, I always have my lovely assistant pump the pedal down until she reaches the end of travel & hold it there until I let her know I've got the bleeder screw fully opened/closed, then she slowly lets it all the way up. I don't pump the brakes more than once. I do each corner 3 seperate times before moving to the next, & refill the mstr.cyl. fluid level after each corner . I used a full qt. of fluid before getting all the air out of my 74. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.* Last edited by SCOTI; 08-11-2003 at 11:54 AM.

08-11-2003, 12:32 PM	#8
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,906	i have never done brakes before... i will try bleeding them again. i am not real sure about bleeding the master cylinder. where do i get bleeding plugs? i will give it a shot though......thanks guys! __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

08-11-2003, 03:33 PM	#9
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,963	Usually when you purchase a new mstr.cyl. they will include bleeding plugs & small lengths of vac tubing. Try your local parts house, they should have some extras somewhere. They're just some plastic plugs that thread into the front & rear ports & allow you to connect the vac tubing to be able to bleed the mstr.cyl. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

08-11-2003, 09:37 PM	#10
boataddict26 Registered User Join Date: Mar 2003 Location: North Central Florida Posts: 726	The way I have always bleed brake lines, was like everyone has been saying, W/ the assistant and all. But have always pumped the petal slowly until it was really firm and would only go about half way to the floor. Then open the valve slowly, let any air out, and close it. Repeat until nothing but fluid comes out. __________________ 1978 Chevy C10 Currently under resto. 350 Getting face lift. .060, JEpistons, Modify heads. More will come with money.

08-11-2003, 09:48 PM	#11
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	I use my Miteyvac now. I've graduated past the pedal pumping and requiring an assistant. Last time I tried to get my wife to help and hearing her complain (or is the word *****?) about her leg getting tired was the straw that broke the camels back. I ordered the Miteyvac the next day. It gets lonely when you don't need help to fix stuff, but it sure is a lot easier on the ears. __________________ Mike 1985 Chevy C-10



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