Brakes Grabbing and Locking - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**rharris** · 09-15-2018, 11:42 AM

After putting the power brake booster on my truck (71 c disk/drum with booster added) the front drivers side wheel seems to grab more than the rest. Their is some play in the pedal until they grab and that wheel seems to lock. It does release, it just seems to grab too much. I re-bled the brakes a few times and believe I have all the air out of the lines. I installed a new cylinder at the drivers side rear, the rest are stock. Any tricks to getting a more equal brake out of all 4 wheels?

Mike C · 09-15-2018, 03:20 PM

IME, the failure of the opposite side rubber brake line is the biggest contributor to uneven front braking.

If you have not replaced rubber lines in some time, I'd start there.

**rharris** · 09-15-2018, 04:17 PM

everything is factory except the one cylinder. I plan on doing all the lines this fall/winter. Hopefully that will help, thanks.

mike16 · 09-15-2018, 04:59 PM

yes, The brakes that are locking up may be the only brakes doing there job. look at the problem from different perspectives.

I converted a 66 to dual master cylinders one time and after bleeding the brakes... finally.. the whole system started failing randomly. ended up rebuilding the MC and all the cylinders and new hoses before karmic energy was restored

09-15-2018, 11:42 AM	#1
rharris Senior Member Join Date: Apr 2013 Location: Pottsgrove PA Posts: 560	Brakes Grabbing and Locking After putting the power brake booster on my truck (71 c disk/drum with booster added) the front drivers side wheel seems to grab more than the rest. Their is some play in the pedal until they grab and that wheel seems to lock. It does release, it just seems to grab too much. I re-bled the brakes a few times and believe I have all the air out of the lines. I installed a new cylinder at the drivers side rear, the rest are stock. Any tricks to getting a more equal brake out of all 4 wheels? __________________ 72 Cheyenne Super C10 SWB 2001 Silverado 1500HD Crew 2011 Silverado 2500HD Crew Duramax (Hers)

09-15-2018, 03:20 PM	#2
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,709	Re: Brakes Grabbing and Locking IME, the failure of the opposite side rubber brake line is the biggest contributor to uneven front braking. If you have not replaced rubber lines in some time, I'd start there. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

09-15-2018, 04:17 PM	#3
rharris Senior Member Join Date: Apr 2013 Location: Pottsgrove PA Posts: 560	Re: Brakes Grabbing and Locking everything is factory except the one cylinder. I plan on doing all the lines this fall/winter. Hopefully that will help, thanks. __________________ 72 Cheyenne Super C10 SWB 2001 Silverado 1500HD Crew 2011 Silverado 2500HD Crew Duramax (Hers)

09-15-2018, 04:59 PM	#4
mike16 Registered User Join Date: Dec 2009 Location: bisbee, arizona Posts: 1,529	Re: Brakes Grabbing and Locking yes, The brakes that are locking up may be the only brakes doing there job. look at the problem from different perspectives. I converted a 66 to dual master cylinders one time and after bleeding the brakes... finally.. the whole system started failing randomly. ended up rebuilding the MC and all the cylinders and new hoses before karmic energy was restored

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