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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Truck bucks

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Old Dec 9, 2007 | 09:09 PM
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Truck bucks

I have a 1971 F100 that i just put back in service.I did a complete brake job(shoes,springs,wheel cylinders,rubber brake lines,master cylinder and turned drums) on the truck and when i apply the brakes the truck wants to buck.The truck was out of sevice since 1999 and i can remember it did this back then with the old brake setup.Any idea what might be causing this?Any help would be appreciated.
 
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Old Dec 10, 2007 | 08:36 AM
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From: Piney Woods of East Texas
Did you adjust the shoes up properly with the star wheel one you installed the wheels?
 
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Old Dec 10, 2007 | 08:45 AM
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wagontrainer,
Sounds like the first place to look would be I-beam and strut bushings and kingins. You might also check for a bent wheel/rim or bad tire. Try having someone else roll the truck and watch the tires from front and then rear.
Gene
 
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Old Dec 11, 2007 | 11:14 AM
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Originally Posted by blue68f100
Did you adjust the shoes up properly with the star wheel one you installed the wheels?
I have not taken a lot of time adjusting the brakes just backing up and applying the brakes for self adjustment.
 
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Old Dec 11, 2007 | 11:19 AM
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[QUOTE=68horses]wagontrainer,
Sounds like the first place to look would be I-beam and strut bushings and kingins. You might also check for a bent wheel/rim or bad tire. Try having someone else roll the truck and watch the tires from front and then rear.

The passenger side king pin had a little slack in it but the drivers side was tight.The tires are new and the rims are staight.How can i check for slack in the i-beam and strut bushings?
When i apply the brakes you can feel it in the pedal.
 
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