slammed truck bleeding brakes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Sick5 · 02-22-2013, 11:44 AM

i have a 1965 GMC that im redoing the brake lines. I have the poportion valves with no reset button Mc and a brake booster.
My problem is theres pressure for the first few pumps then nothing.
ive been reading for hours on brakes bleeding but i think it may have something to do with my poportion valve being lower than my calipers. Im just trying to get an idea of were to start.

shawno72 · 02-22-2013, 12:03 PM

Watching

Sick5 · 02-22-2013, 01:55 PM

me too

**lolife99** · 02-22-2013, 03:01 PM

Where did you get your prop valve?
Are you sure it's not the drum brake's "distribution block"?

What M/C do you have?

Sick5 · 02-22-2013, 03:37 PM

I got the pv fom cpp over two years ago. MC, Brake booster and pv were all running on my truck fine. I just installed my PB crossmember and redid my front brake lines.
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**lolife99** · 02-22-2013, 04:00 PM

Quote:

Originally Posted by Sick5

I got the pv fom cpp over two years ago. MC, Brake booster and pv were all running on my truck fine. I just installed my PB crossmember and redid my front brake lines.
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So you had disc brakes prior to installing the Dropmember?

shawno72 · 02-22-2013, 03:52 PM

What I would do if I were you would be to remove the PB stuff and we'll swap cause then your brakes will work good

Sick5 · 02-22-2013, 04:01 PM

Yes lolife
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Sick5 · 02-22-2013, 04:02 PM

The change was PB stuff and rerouting my PV in the frame
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**lolife99** · 02-22-2013, 04:03 PM

Then I don't know what is going on.
Having the M/C lower than the calipers requires inline check valves.
But the prop valve shouldn't.

**lolife99** · 02-22-2013, 04:04 PM

Maybe the M/C just decided to go.

Sick5 · 02-22-2013, 04:25 PM

Maybe your right I guess.....
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Sick5 · 02-22-2013, 04:26 PM

I have notice that my brakes do get hard if I block my lines from mc but doesnt that mean its good mc

**oldman3** · 02-22-2013, 06:31 PM

Did the combination valve go off center, and only let fluid go to the open side???Jim

Sick5 · 02-22-2013, 07:41 PM

I checked the ground light on the pv and the light is on. How do I reset a custom pv with out the reset button
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Sick5 · 02-22-2013, 11:24 PM

Wel I just purchased a 1975 corvette Mc.. well ill find out
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Sick5 · 02-23-2013, 12:43 AM

Brakes done..... thanks guys
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andrewmp6 · 02-23-2013, 02:27 AM

So it was the master cylinder?

shawno72 · 02-23-2013, 08:10 AM

Good deal Gilbert. I knew it had to be something we overlooked. You gonna keep the corvette master?
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02-22-2013, 11:44 AM	#1
Sick5 C10 CLUB Y QUE! Join Date: Mar 2010 Location: Here Posts: 2,770	slammed truck bleeding brakes i have a 1965 GMC that im redoing the brake lines. I have the poportion valves with no reset button Mc and a brake booster. My problem is theres pressure for the first few pumps then nothing. ive been reading for hours on brakes bleeding but i think it may have something to do with my poportion valve being lower than my calipers. Im just trying to get an idea of were to start. __________________ C/10 CLUB http://67-72chevytrucks.com/vboard/f...play.php?f=148

02-22-2013, 12:03 PM	#2
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	Re: slammed truck bleeding brakes Watching __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

02-22-2013, 01:55 PM	#3
Sick5 C10 CLUB Y QUE! Join Date: Mar 2010 Location: Here Posts: 2,770	Re: slammed truck bleeding brakes me too __________________ C/10 CLUB http://67-72chevytrucks.com/vboard/f...play.php?f=148

02-22-2013, 03:01 PM	#4
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,692	Re: slammed truck bleeding brakes Where did you get your prop valve? Are you sure it's not the drum brake's "distribution block"? What M/C do you have? __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

02-22-2013, 03:37 PM	#5
Sick5 C10 CLUB Y QUE! Join Date: Mar 2010 Location: Here Posts: 2,770	Re: slammed truck bleeding brakes I got the pv fom cpp over two years ago. MC, Brake booster and pv were all running on my truck fine. I just installed my PB crossmember and redid my front brake lines. Posted via Mobile Device __________________ C/10 CLUB http://67-72chevytrucks.com/vboard/f...play.php?f=148

02-22-2013, 03:52 PM	#7
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	Re: slammed truck bleeding brakes What I would do if I were you would be to remove the PB stuff and we'll swap cause then your brakes will work good __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

02-22-2013, 04:01 PM	#8
Sick5 C10 CLUB Y QUE! Join Date: Mar 2010 Location: Here Posts: 2,770	Re: slammed truck bleeding brakes Yes lolife Posted via Mobile Device __________________ C/10 CLUB http://67-72chevytrucks.com/vboard/f...play.php?f=148

02-22-2013, 04:02 PM	#9
Sick5 C10 CLUB Y QUE! Join Date: Mar 2010 Location: Here Posts: 2,770	Re: slammed truck bleeding brakes The change was PB stuff and rerouting my PV in the frame Posted via Mobile Device __________________ C/10 CLUB http://67-72chevytrucks.com/vboard/f...play.php?f=148

02-22-2013, 04:03 PM	#10
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,692	Re: slammed truck bleeding brakes Then I don't know what is going on. Having the M/C lower than the calipers requires inline check valves. But the prop valve shouldn't. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

02-22-2013, 04:04 PM	#11
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,692	Re: slammed truck bleeding brakes Maybe the M/C just decided to go. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

02-22-2013, 04:25 PM	#12
Sick5 C10 CLUB Y QUE! Join Date: Mar 2010 Location: Here Posts: 2,770	Re: slammed truck bleeding brakes Maybe your right I guess..... Posted via Mobile Device __________________ C/10 CLUB http://67-72chevytrucks.com/vboard/f...play.php?f=148

02-22-2013, 04:26 PM	#13
Sick5 C10 CLUB Y QUE! Join Date: Mar 2010 Location: Here Posts: 2,770	Re: slammed truck bleeding brakes I have notice that my brakes do get hard if I block my lines from mc but doesnt that mean its good mc __________________ C/10 CLUB http://67-72chevytrucks.com/vboard/f...play.php?f=148 Last edited by Sick5; 02-22-2013 at 04:38 PM.

02-22-2013, 06:31 PM	#14
oldman3 Senior Member Join Date: Mar 2011 Location: West Plains, Missouri Posts: 7,555	Re: slammed truck bleeding brakes Did the combination valve go off center, and only let fluid go to the open side???Jim __________________ my build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=459839 Jimbo's long bed step build:http://67-72chevytrucks.com/vboard/s...t=464626<br />

02-22-2013, 07:41 PM	#15
Sick5 C10 CLUB Y QUE! Join Date: Mar 2010 Location: Here Posts: 2,770	Re: slammed truck bleeding brakes I checked the ground light on the pv and the light is on. How do I reset a custom pv with out the reset button Posted via Mobile Device __________________ C/10 CLUB http://67-72chevytrucks.com/vboard/f...play.php?f=148

02-22-2013, 11:24 PM	#16
Sick5 C10 CLUB Y QUE! Join Date: Mar 2010 Location: Here Posts: 2,770	Re: slammed truck bleeding brakes Wel I just purchased a 1975 corvette Mc.. well ill find out Posted via Mobile Device __________________ C/10 CLUB http://67-72chevytrucks.com/vboard/f...play.php?f=148



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02-23-2013, 12:43 AM	#17
Sick5 C10 CLUB Y QUE! Join Date: Mar 2010 Location: Here Posts: 2,770	Re: slammed truck bleeding brakes Brakes done..... thanks guys Posted via Mobile Device __________________ C/10 CLUB http://67-72chevytrucks.com/vboard/f...play.php?f=148

02-23-2013, 02:27 AM	#18
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: slammed truck bleeding brakes So it was the master cylinder?

02-23-2013, 08:10 AM	#19
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	Re: slammed truck bleeding brakes Good deal Gilbert. I knew it had to be something we overlooked. You gonna keep the corvette master? Posted via Mobile Device __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

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