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#26 | |
Registered User
Join Date: May 2013
Location: Central NC
Posts: 830
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Re: Why cant I bleed my rear brakes?
Quote:
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1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives ![]() |
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#27 |
Senior Member
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Location: Clovis Ca.
Posts: 632
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Re: Why cant I bleed my rear brakes?
Stomp on the brake peddle like your going 100 mph and need to stop now. You may need to do this several times. You may also hear a pop or a click when it resets.
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I'm sorry I called you stupid. I thought you knew already. 67 C-20 Custom Camper 68 Nova 396 it does wheelies 2005 Buick Century the one the wife drives 1989 Toyota Tercel to drive when I can't put gas in the first 2. |
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#28 | |
Registered User
Join Date: May 2013
Location: Central NC
Posts: 830
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Re: Why cant I bleed my rear brakes?
Quote:
Clamping the pin gets the gel out of the bleeders?
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1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives ![]() |
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#29 |
Account Suspended
Join Date: Oct 2012
Location: Salt Lake City, Utah
Posts: 3,331
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Re: Why cant I bleed my rear brakes?
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#30 |
Registered User
Join Date: May 2013
Location: Central NC
Posts: 830
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Re: Why cant I bleed my rear brakes?
So it looks like there ar LOTS of reasons I cant bleed my rear brakes.
1 - Gummed up bleeder passages 2 - Prop valve tripped (more chicken dinners due). 3 - Another brake line rusted through enough to suck in air when I use my handy vacuum bleeder. 4 - Who knows I also poked a hole in my radiator while it was out of the truck during my engine rebuild with the cherry picker, then the replacement I bought doesn't fit...this truck is really challenging my sanity
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1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives ![]() |
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#31 | |
just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Why cant I bleed my rear brakes?
Daddy brim's method works most times. It is not as much about pressure as it is speed. Stomp it quickly, it may take a few times.
If that does not get it, (you are going to hate this) open one of the front bleeders and push the pedal too the floor. When it gets close, you will feel some resistance, push past that and you will feel/hear the click. Tighten the bleeder. Now start the bleeding process again, from the right rear, working toward the closest.
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#32 | |
Registered User
Join Date: May 2013
Location: Central NC
Posts: 830
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Re: Why cant I bleed my rear brakes?
Quote:
I am learning more about 40 year old brakes than I ever wanted to know. I did take the light switch out of the prop valve and was able to easily center the internal safety valve using an ice pick. Of course it tripped immediatly when I pushed the pedal because of the yet undiscovered leak.
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1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives ![]() |
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#33 | ||
just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Why cant I bleed my rear brakes?
Quote:
![]() Seriously though, it is much better to find it while bleeding than when you need the truck to stop.
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You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. ![]() |
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#34 |
Registered User
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,143
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Re: Why cant I bleed my rear brakes?
There is a tool that keeps the proportioning valve pin set in the correct position while bleeding the brakes. You can bleed without it but not as easy. Also, the correct bleeding procedure, according to the GM service manual, is closest to farthest, unlike most cars. I know lots of guys will say nay to the tool and the closest to farthest but it is my humble opinion, that leads to a lot of these "they can't I bleed my brakes" threads.
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1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703 |
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#35 | |
Account Suspended
Join Date: Oct 2012
Location: Salt Lake City, Utah
Posts: 3,331
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Re: Why cant I bleed my rear brakes?
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#36 |
Registered User
Join Date: May 2013
Location: Central NC
Posts: 830
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Re: Why cant I bleed my rear brakes?
Having recently been laying under my truck studying the brake lines, I would agree that the left rear is farthest from the MC...but only by a few inches. The one line to the back (that runs up the right frame rail) splits at the end of the hose running from the end of the hard line to the top of the differential. The bracket is mounted on top of the rear end housing but off-center to the right causing the line to the left rear to be an inch or two longer than the one to the right.
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1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives ![]() |
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#37 |
Registered User
Join Date: May 2013
Location: Central NC
Posts: 830
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Re: Why cant I bleed my rear brakes?
Here is how I recentered the safety valve in my proportioning valve.
That is the prop valve under the master cylinder. ![]() Closer view. ![]() With electric connection removed from the switch that turns on the brake light on dash when safety valve pops. ![]() Switch removed. ![]()
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1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives ![]() |
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#38 |
Registered User
Join Date: May 2013
Location: Central NC
Posts: 830
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Re: Why cant I bleed my rear brakes?
Looking down into the hole the switch came out of.
![]() Using a pick to slide the valve back to the center...my leak was in the rear so the valve moved to the rear to block fluid loss. ![]() Centered. ![]()
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1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives ![]() |
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#39 |
Registered User
Join Date: May 2013
Location: Central NC
Posts: 830
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Re: Why cant I bleed my rear brakes?
By the way, with no leaks in any brake lines, I can bleed the brakes in about 5 minutes, front and rear, with my vacuum bleeder...very easy.
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1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives ![]() |
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#40 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: Why cant I bleed my rear brakes?
The rear brakes are fed through the same line,so left or right is no different as far as farthest
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#41 |
Registered User
Join Date: May 2013
Location: Central NC
Posts: 830
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Re: Why cant I bleed my rear brakes?
On mine the split is off center of the truck to the right so the line from the split to the left rear is 2-3 inches longer....probably differs depending on when and where the truck was built.
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1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives ![]() |
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