: Brake bleeding
wbaker01 May 31st, 03, 10:23 PM I know this is a basic question but I just replaced the right front brake line on my 73 Chevelle SS and now need to bleed the brakes, what is the recommended procedure, I've heard that only the front brakes need bled and I've heard that all the brakes need bled, please Help!!
YenkoChevelle69 May 31st, 03, 11:20 PM YOu may as well bleed them all to get some fresh fluid in the lines. Start with the furthest wheel away....back pass, then drive rear, then pass front then drive front. BLeed them twice to ensure all the air is out etc.
I'll assume you have never bled brakes before. Take the cap off the master cylinder and top it off, replace lid. Have someone pump the pedal 5 times to pump them up, then crack the bleeder screw. At this point the pedal will go to the floor. While the pedal is on the floor, close the bleeder screw. Do this about 5 times per wheel. Make sure that you keep an eye of the fluid level in your master so you don;t force any new air in at the front of the lines. Hit your bleeder screws with some "PB Blaster" to break the crud loose so that you do not strip your bleeder screws. But like I said, bleed them twice in order to get good pedal pressure.
Xtreme70SS396 Jun 2nd, 03, 1:19 PM I've always heard to do the farthest wheel first, too. However, the manual says the opposite - do the closest wheel first.
As YenkoChevelle69 said, you might as well (and really should) bleed all of them. Lots of crud gets built up over the years, you should have seen mine.
Note there's a vacuum tool you can used that sells for about $20 that will allow you to bleed the brakes without all the pedal pushing. Mity-Vac or something like that.
rocks66ss Jun 2nd, 03, 7:26 PM Not sure what manual you speak from, but the Chiltons says, and I quote,"the system should be bled starting at the furthest wheel from the master cylinder and working towards the nearest wheel. Therefore, the correct bleeding sequence is: master cylinder, right rear wheel cylinder,left rear,right front and left front".
Rocky
Xtreme70SS396 Jun 3rd, 03, 1:15 PM 2 sources for the sequence:
1 - Praise Dyno brake instructions, came with my stuff.
2 - 1970 Chevrolet Chassis Service manual.
Like I said, I used to to it like you said: Master Cylinder, Pass Rear, Driver Rear, Pass Front, then Driver Front last. This is my first attempt at the method in the service manual, won't be at it again until this weekend.
EDIT: I just did a big search for more tips on my brake bleeding job for this weekend. EVERYONE, and I mean EVERYONE, says to do the longest brake line first, opposite of what I've been stating here from the chevrolet service manual. Interesting, to say the least.
Also, some really great opinions on using speed bleeders in place of your regular bleeder valves. They have a check valve in them so you don't need to keep opening and closing them. Think I'll put those things in myself!
Rick Dorion Jun 5th, 03, 11:21 AM I have the Russell speed bleeders and love them. I have found that with my myti-vac, I need to put teflon tape around the bleeder threads so air isn't sucked in.
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