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Old 08-07-2008, 08:43 PM   #16
jinx10000
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Re: Brakes pull truck to left

I'm not quite sure what you mean by never loosened the bleeders on cal or shoes?

My wife pumped the brakes and held them while I loosened the bleeder valve. Did this for both the driver and passenger side of the truck.

I don't know if this helps. The fluid was not coming out of the top of the tub on the master cylinder it was coming out of the gasket underneath of the tub.

I will check for dents in the line.

What is the ppv?
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Old 08-07-2008, 09:03 PM   #17
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Re: Brakes pull truck to left

well if you would have pushed your front piston in with bleeder tight that would make it come out and master cyl. if you would've push them in with them open you would have no fluid comming out of master..
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Old 08-07-2008, 09:05 PM   #18
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Re: Brakes pull truck to left

Quote:
Originally Posted by scrapper1
well if you would have pushed your front piston in with bleeder tight that would make it come out and master cyl. if you would've push them in with them open you would have no fluid comming out of master..
i meant would not have bee comming out of master cyl.sorry
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Old 08-08-2008, 05:21 AM   #19
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Re: Brakes pull truck to left

scrapper1. Thanks for sticking with me on this.

I think I understand what you are saying. I should have loosened the bleeder valve when bleeding the new caliper. Until the brake pads were up against the rotor.

Ok. So when I go out and look at it this afternoon I should look for dented lines.

What is the PPV and how can I check it?

Could the low pressure also be caused by a collapsed hose on the passenger side?

OH by the way. I also tried this. My wife started the truck, pumped the brakes and then held them down. When I released the bleeder valve while the truck was running it had high pressure. I don't know if that tells you anything new or not?
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Old 08-08-2008, 11:57 AM   #20
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Re: Brakes pull truck to left

the valve i'm talking about is where all 4 of you brake lines run into it before going to master cyl.and it should be in between the moter and fire wall..and i'm glad to helping you..
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Old 08-08-2008, 12:30 PM   #21
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Re: Brakes pull truck to left

proportional valve = ppc atleast thats what i think hes talking about.check to see if the caliper pistons are metal or plastic.they used the plastic pistons & they caused alot of caliper failures/seizing
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Old 08-08-2008, 05:03 PM   #22
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Re: Brakes pull truck to left

Wow plastic?

Brand new caliper on passenger side, everything I saw was metal.

I'm going to check as much of the line as I can for kinks tonight or tomorrow morning.

When I took the hose off the drivers side all of the fluid came out of the brake fluid tub. I then filled it up and bled that side. When I took the hose loose at the caliper on the passenger side very little fluid came out. I might take the hose off at the line and see if fluid comes out rapidly. If so, the rubber hose on the passenger side may be collapsed?
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Old 08-08-2008, 07:08 PM   #23
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Re: Brakes pull truck to left

As screwy as it sounds, if it pulls left your right side is probably stuck. When you step on the brakes because the right piston is dragging, more brake gets applied to the left causing it to pull. It does not have to be very bad to cause it to pull the other direction. Replace the right caliper.

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Old 08-08-2008, 07:36 PM   #24
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Re: Brakes pull truck to left

Hemidaze.

Thanks for the advice; however, I have already tried it.

Left side is pulling. I changed the left side hose and right side caliper.

I currently think there is a problem with fluid pressure at the right side brake.

When I changed the left side hose and bled brakes high pressure. When I changed right side caliper and bled brakes low pressure.
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Old 08-08-2008, 07:37 PM   #25
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Re: Brakes pull truck to left

no there not plastic there fiberglass and they did cause alot of problems.they are junk. and yes that was the valve i was talking about..
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Old 08-09-2008, 06:31 AM   #26
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Re: Brakes pull truck to left

Oops, I misread the previous post. You are on the right track. If it pulls to the left it usually indicates a right side problem. I think my next move would be to replace the right side hose. Not too common of a problem but I have ran into it a few times and not too hard or expensive. A couple of years ago I had a plugged hose on the left front of an old motor home. I fixed that and found a rusted out line on the rears. I fixed that and the rear hose was plugged. Pain in the butt because you had th pull the duals to bleed the rears (no room for a tool).
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Old 08-09-2008, 11:32 AM   #27
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Re: Brakes pull truck to left

OK I want to thank everyone for their help with this. I finally got it to work.

When I took off the right brake hose, at the caliper, very little fluid was dripping out. When I pulled the hose off at the line it started running out steadily.

So I replaced the rubber hose and now the car actually stops straight.

Thanks again everyone. Like always, this site and members are a life saver.
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