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#1 |
Registered User
Join Date: Sep 2014
Location: Manley Hot Springs Alaska
Posts: 253
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Bleeding front disc brakes '82 K20
New calipers and pads. Have clear hose attached and in jar of fluid.When I crack the bleeder, no peddle pressure. I get bubbles in the line as if air is leaking past the bleeder treads. I am an old guy and have bled many many systems and have not seen this before. These are coarse threads and the rebuilt maybe loose in the threads. So I am thinking of putting some Teflon tape on the threads. Any thoughts on the subject. Would be a real PIA to change out the caliper. Thank You
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#2 |
Registered User
Join Date: Jun 2013
Location: Somewhere
Posts: 3,073
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Re: Bleeding front disc brakes '82 K20
Is the brake light on the dash on? The brake idiot light is connected to a brown (if I recall) wire connecting to a block near the MC. That block has a switch and valve that notices a lack of pressure on one side. The valve moves and stops fluid from going to the low pressure side. That would be the side you're bleeding.
Do a search for how to make the stop that keeps the valve from moving. Try the internet so you don't have to wait. Type words into a search engine such as how do I bleed brakes on a GM vehicle. The answer will come to you in one second. |
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#3 |
Registered User
Join Date: Dec 2010
Location: Visalia, Ca
Posts: 707
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Re: Bleeding front disc brakes '82 K20
My old calipers did this on my k5 I took them out and put some white grease on them to see if that was were it was coming from and it stopped the air from the threads then I was able to properly use my power bleeder. I don't see why you couldn't use some type of thread sealant I probably will next time I have this issue
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<Brandon> 1974 Chevrolet K5 Blazer 350sbc/SM465/NP205, dana44 front, corp 14bolt rear with 4.10s and a powertrax locker, custom rear bumper 400sbc in the works. ![]() 1981 GMC C1500 stepside 250i6, 3spd, 12bolt with 3.08s 2.5/4drop on 15x10 with 275/50r15 81 GMC C3500 cab-chassis dually with utility bed 350sbc, Sm465, 14bolt with 4.10s nv4500 getting ready to go in 1979 Chevrolet K5 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434096 1976 Chevrolet C10 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434195 |
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#4 |
Registered User
Join Date: Jan 2013
Location: Toronto, ON
Posts: 458
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Re: Bleeding front disc brakes '82 K20
Did you put crush washers - two of them on the bango bolts and torque them down tight - this could be an air leak problem. Did you replace the rubber lines at the same time?
I'm in the middle of my own entire brake system overhaul, I have ran into many issues...and I'm still not there yet.
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Found my dad's old truck http://67-72chevytrucks.com/vboard/s...d.php?t=563321 Newspaper Article Publishing the quest find my dad's old truck http://www.theglobeandmail.com/globe...ticle12494281/ |
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#5 | |
Registered User
Join Date: Sep 2014
Location: Manley Hot Springs Alaska
Posts: 253
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Re: Bleeding front disc brakes '82 K20
Quote:
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