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01-02-2012, 11:26 PM
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#1 |
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Alright Alright Alright
Join Date: Mar 2004
Location: Midland, Texas
Posts: 1,672
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Faulty proportioning valve or master cylinder?
Today, I helped change out the break pads on my buddies 79 Bonanza. Before the swap, you couldnt even turn the rotor without the wheel on. So, we replaced both front brake lines, both calipers as well as the pads. We also bleed all four brakes. After all of this, the brakes still wont spin by hand and with the wheel on, it is very stiff (same as before). The only thing I can think it would be is the proportioning valve or the master cylinder. What do yall think?
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1972 Cheyenne Chevrolet red and white 357ci, Vortec heads, GM Performance high rise intake, Comp 268H .454/.454 218/218 110 LSA Quadrajet carb, Flowtech headers, 2.25 40 series HEI, Curve kit, TH 350, 3.07 gears 275/60/15s on 15x8 rallies |
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01-03-2012, 08:03 AM
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#2 |
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Registered User
Join Date: Aug 2009
Location: S.C.
Posts: 1,593
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Re: Faulty proportioning valve or master cylinder?
Did the wheel spin free with the caliper off?
I'm in the process of doing my '86. Rotors were scored up, so got them turned. I only ask because mine wouldn't turn with the scored rotors. Caliper removed they turned fine, that eliminated a bearing issue. Check this thread, might give you another direction.http://67-72chevytrucks.com/vboard/s...d.php?t=501102
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'86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold  )I'm kinda like duct tape- no real purpose, but handy to have around. Last edited by donut; 01-03-2012 at 08:10 AM. |
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01-03-2012, 08:51 AM
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#3 | |
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Registered User
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
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Re: Faulty proportioning valve or master cylinder?
Quote:
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