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06-02-2024, 12:55 AM
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#1 |
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Registered User
Join Date: Dec 2005
Location: Kalifornia
Posts: 354
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No front brakes
Driving a 72 C10 with stock front disc brakes and drum rears. Haven't changed the front pads for years so I decided to do just that. When I pulled off the pads they looked new with no wear. The piston was still pushed in like I would have done before installing new pads. This is both front brake sides. Apparently I've only been stopping on the rear all these years. What should I be looking for?
Another note. No brake light is coming on. Checked brake light switch and it's working working properly. All panel bulbs new. Both front sides have the same symptoms so I would think it's either the master cylinder or combination/proportioning valve. Proportioning valve is centered. Guess I'll change both so I only have to bleed once. Last edited by howzzzit; 06-02-2024 at 12:06 PM. |
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06-02-2024, 01:05 AM
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#2 |
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Registered User
Join Date: Jun 2013
Location: Somewhere
Posts: 3,122
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Re: No front brakes
There's a valve in the lines by the master cylinder that makes fluid go to the front or rear when one end loses pressure. There's a little tool you're supposed to use when bleeding to keep the pin from moving.
http://67-72chevytrucks.com/vboard/s...d.php?t=785770 |
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06-02-2024, 01:45 AM
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#3 | |
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Registered User
Join Date: Dec 2005
Location: Kalifornia
Posts: 354
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Re: No front brakes
Quote:
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06-02-2024, 01:15 AM
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#4 |
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Senior Member
 
Join Date: Jun 2022
Location: San Ramon,CA
Posts: 591
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Re: No front brakes
At least they never squeal
__________________
1970 C10 Custom longbed 350/350 |
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06-02-2024, 11:18 AM
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#5 | |
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Registered User
Join Date: May 2011
Location: Northern Calif.
Posts: 3,770
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Re: No front brakes
Quote:
 In all seriousness, you'll get it all worked out.
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06-02-2024, 12:12 PM
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#6 |
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Senior Member
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,976
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Re: No front brakes
Check the hoses. In fact, after so many years, I would just change the hoses.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
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06-02-2024, 01:52 PM
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#7 |
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Registered User
Join Date: Dec 2005
Location: Kalifornia
Posts: 354
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Re: No front brakes
Well, took it for a ride. Slammed the brakes a couple of times. Front working now. Must have been the proportioning valve. We'll see. Thanks for the help.
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06-02-2024, 02:06 PM
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#8 | |
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Registered User
Join Date: Oct 2016
Location: Dallas Texas
Posts: 3,218
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Re: No front brakes
Quote:
It must feel WAY better now. Put a lot of heat into the pads/rotors by stopping hard several times to bed the pads and season the rotors...then it'll feel even better. -Kevin
__________________
67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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