truck swerves right when braking - The 1947 - Present Chevrolet & GMC Truck Message Board Network

speedkills · 01-10-2011, 07:23 PM

Hey all,

I know something is stuck, but im not too sure how to go about it with drums all around... any ideas?

68GMCCustom · 01-10-2011, 07:55 PM

Either your left front brake is not engaging properly... or your right front is grabbing to soon.

speedkills · 01-10-2011, 08:00 PM

okay thanks, so its an adjustment issue? theres no way drums can get stuck like calipers correct?

**lolife99** · 01-10-2011, 08:19 PM

Leaky wheel cylinder causing it to grab?

68GMCCustom · 01-10-2011, 08:25 PM

could be serveral things. you'll just need to jack it up and pull off the front wheels and the drums to find out whats going on.

cparman · 01-10-2011, 09:11 PM

well that tells me that the right brake is working and the left one is lazy.

Pull the wheels and inspect, looking for a leaking wheel cylinder, that might have gotten brake fluid on the shoes ( either side )
If you do not find this, check to see if BOTH sides of each wheel cylinder is extending. Sometimes an old WC can get stuck on one side.
You could have a rubber brake hose that is collapsed on the left, or staying on a bit on the right side. IF I WERE YOU

I would pull the wheels and inspect, and if I found nothing obvious, I would put it back together and adjust the brakes evenly and try it again.

I would next suspect WC's and brake hoses

cajundragger · 01-11-2011, 10:38 AM

could be the alignment.

when the front end squats it may be toeing out on one side.

or if the rear is lifting a panhard could be pulling the rear end over to one side and cause it to brake steer.

allengator · 01-11-2011, 10:44 AM

Quote:

Originally Posted by lolife99

Leaky wheel cylinder causing it to grab?

x2

01-10-2011, 07:23 PM	#1
speedkills Registered User Join Date: Dec 2010 Location: West SFV, CA Posts: 71	truck swerves right when braking Hey all, I know something is stuck, but im not too sure how to go about it with drums all around... any ideas?

01-10-2011, 07:55 PM	#2
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: truck swerves right when braking Either your left front brake is not engaging properly... or your right front is grabbing to soon. __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

01-10-2011, 08:00 PM	#3
speedkills Registered User Join Date: Dec 2010 Location: West SFV, CA Posts: 71	Re: truck swerves right when braking okay thanks, so its an adjustment issue? theres no way drums can get stuck like calipers correct?

01-10-2011, 08:19 PM	#4
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,686	Re: truck swerves right when braking Leaky wheel cylinder causing it to grab? __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

01-10-2011, 08:25 PM	#5
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: truck swerves right when braking could be serveral things. you'll just need to jack it up and pull off the front wheels and the drums to find out whats going on. __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

01-10-2011, 09:11 PM	#6
cparman sharp as a marble Join Date: Jan 2007 Location: atlantic beach,florida Posts: 1,082	Re: truck swerves right when braking well that tells me that the right brake is working and the left one is lazy. Pull the wheels and inspect, looking for a leaking wheel cylinder, that might have gotten brake fluid on the shoes ( either side ) If you do not find this, check to see if BOTH sides of each wheel cylinder is extending. Sometimes an old WC can get stuck on one side. You could have a rubber brake hose that is collapsed on the left, or staying on a bit on the right side. IF I WERE YOU I would pull the wheels and inspect, and if I found nothing obvious, I would put it back together and adjust the brakes evenly and try it again. I would next suspect WC's and brake hoses

01-11-2011, 10:38 AM	#7
cajundragger Registered User Join Date: Aug 2006 Location: louisiana Posts: 1,008	Re: truck swerves right when braking could be the alignment. when the front end squats it may be toeing out on one side. or if the rear is lifting a panhard could be pulling the rear end over to one side and cause it to brake steer.



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