front pass. side brakes lock up - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gmc1971harwich · 05-25-2010, 10:03 PM

i was driving my truck last week and the wheel kept pulling to the right when i hit the brakes so i thought it was the caliper, so i replaced it, and bled the brakes and it was the same. still locks up, stays that way until i crack the bleeder,, then it frees up till i hit the brakes again. my friend told me its probably the rubber line that connects to the caliper collapsing which locks in the line pressure to the brakes. he checked the wheel bearings and there fine, no play and wheel spins freely when its jacked up and pressure is cracked at the bleeder. do u guys think its the rubber hose or could it be something else?

71meangreenc10 · 05-25-2010, 10:05 PM

How old are the lines? If you can't answer, replace them.

Smitty

oldblue1968chevy · 05-25-2010, 10:07 PM

I had the same thing happen to me.

I converted from drums to disc and man. to power and had a rubber seal that wasnt needed stuck between MC and booster

**lolife99** · 05-25-2010, 10:25 PM

Replace the rubber brake hoses that go to the calipers.
They collapse on the inside, and you can't tell it.
My guess is the driver's side brake line is collapsed,... and it's sending all the brake fluid to the passenger side caliper,... making it lock up.

gmc1971harwich · 05-25-2010, 10:36 PM

the trucks been sitting on the side of my dads house off the road since 2006 and i cant even remember the last time he had the brakes done to be honest lol

gmc1971harwich · 05-25-2010, 10:39 PM

i ordered both sides from LMC anyway drivin the wifes windstar till then havent got the GTO on the road yet.

05-25-2010, 10:03 PM	#1
gmc1971harwich Registered User Join Date: Nov 2008 Location: Cape cod, ma. Posts: 394	front pass. side brakes lock up i was driving my truck last week and the wheel kept pulling to the right when i hit the brakes so i thought it was the caliper, so i replaced it, and bled the brakes and it was the same. still locks up, stays that way until i crack the bleeder,, then it frees up till i hit the brakes again. my friend told me its probably the rubber line that connects to the caliper collapsing which locks in the line pressure to the brakes. he checked the wheel bearings and there fine, no play and wheel spins freely when its jacked up and pressure is cracked at the bleeder. do u guys think its the rubber hose or could it be something else?

05-25-2010, 10:05 PM	#2
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	Re: front pass. side brakes lock up How old are the lines? If you can't answer, replace them. Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van"

05-25-2010, 10:07 PM	#3
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: front pass. side brakes lock up I had the same thing happen to me. I converted from drums to disc and man. to power and had a rubber seal that wasnt needed stuck between MC and booster __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

05-25-2010, 10:25 PM	#4
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,701	Re: front pass. side brakes lock up Replace the rubber brake hoses that go to the calipers. They collapse on the inside, and you can't tell it. My guess is the driver's side brake line is collapsed,... and it's sending all the brake fluid to the passenger side caliper,... making it lock up. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 05-25-2010 at 10:26 PM.

05-25-2010, 10:36 PM	#5
gmc1971harwich Registered User Join Date: Nov 2008 Location: Cape cod, ma. Posts: 394	Re: front pass. side brakes lock up the trucks been sitting on the side of my dads house off the road since 2006 and i cant even remember the last time he had the brakes done to be honest lol

05-25-2010, 10:39 PM	#6
gmc1971harwich Registered User Join Date: Nov 2008 Location: Cape cod, ma. Posts: 394	Re: front pass. side brakes lock up i ordered both sides from LMC anyway drivin the wifes windstar till then havent got the GTO on the road yet.



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