front brakes locked down - Chevy and GMC Duramax Diesel Forum

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post #1 of 6 (permalink) Old 06-25-2010, 03:28 PM Thread Starter
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front brakes locked down

My truck had a bad tire bouncing issue and ended up being front caliper sticking. Got so bad that it wouldn't even let the truck get in od due to drag.Would stop without using brake pedal. Had both calipers replaced, lines, pads, rotors turned. Drove 10 miles, front brakes got so hot it warped rotors and smoked brakes as if on fire. What could be causing this? It has anti locks. Noticed electronic device on chassis rail with brake lines going through them. Assume this is part of anti lock. I'm assuming master cylinder sticking. Anything else.

2006 Freightliner Century 120 with Detroit Diesel. Sold my 2012 Chevy 3500 dually work truck with CM ER hauler bed and EZ Floater air hitch. Towing 2003 Teton Grand Freedom 5ther weighing 20,890 lbs. Traveling the USA welding pipe, repairing plants, building new ones & really enjoying God's beautiful country.
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post #2 of 6 (permalink) Old 06-25-2010, 03:54 PM
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pinched lines? leaking hydroboost pressure through valve to apply brakes maybe?

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post #3 of 6 (permalink) Old 06-25-2010, 04:02 PM Thread Starter
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No pinched lines. Hydroboost leaking? How to check?

2006 Freightliner Century 120 with Detroit Diesel. Sold my 2012 Chevy 3500 dually work truck with CM ER hauler bed and EZ Floater air hitch. Towing 2003 Teton Grand Freedom 5ther weighing 20,890 lbs. Traveling the USA welding pipe, repairing plants, building new ones & really enjoying God's beautiful country.
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post #4 of 6 (permalink) Old 06-25-2010, 04:18 PM Thread Starter
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Since this has been brought up I realize my problem started as soon as I did the flush of the power steering pump. I realized I had no play in brake pedal after wards. Noticed mpg going down and tire bounce came into play. Tire bounce was actually rotors warped and brakes gripping rotors causing this. No play in pedal means brakes already applied. How could flushing system cause this?

2006 Freightliner Century 120 with Detroit Diesel. Sold my 2012 Chevy 3500 dually work truck with CM ER hauler bed and EZ Floater air hitch. Towing 2003 Teton Grand Freedom 5ther weighing 20,890 lbs. Traveling the USA welding pipe, repairing plants, building new ones & really enjoying God's beautiful country.
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post #5 of 6 (permalink) Old 06-25-2010, 04:44 PM Thread Starter
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Also it's just the front wheel brakes locking

2006 Freightliner Century 120 with Detroit Diesel. Sold my 2012 Chevy 3500 dually work truck with CM ER hauler bed and EZ Floater air hitch. Towing 2003 Teton Grand Freedom 5ther weighing 20,890 lbs. Traveling the USA welding pipe, repairing plants, building new ones & really enjoying God's beautiful country.
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post #6 of 6 (permalink) Old 06-25-2010, 06:32 PM Thread Starter
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I ordered a hb unit from Advance tonight. Thanks.

2006 Freightliner Century 120 with Detroit Diesel. Sold my 2012 Chevy 3500 dually work truck with CM ER hauler bed and EZ Floater air hitch. Towing 2003 Teton Grand Freedom 5ther weighing 20,890 lbs. Traveling the USA welding pipe, repairing plants, building new ones & really enjoying God's beautiful country.
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