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car pulls hard left when brakes appield why

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Old Jun 23, 2014 | 01:41 PM
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Default car pulls hard left when brakes appield why

1972 L46 coupe good clippers, rotors, pads. No line leaks, no plugged lines but she still pulls left when brakes are pressed. Any ideas I'm open to try anything?
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Old Jun 23, 2014 | 01:49 PM
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How are all the steering components, like rag joint, control arm bushings, tie rod ends, front bearings etc?

Could be that you've got something with some extra 'play' that surfaces when you try to brake... Just an idea...
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Old Jun 23, 2014 | 01:55 PM
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Does it pull the steering wheel or does the car feel more like it is drifting left? Bad trailing arm bushings will do that. Otherwise, something is badly worn in the steering linkage.
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Old Jun 23, 2014 | 02:03 PM
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Originally Posted by FireballXL5
How are all the steering components, like rag joint, control arm bushings, tie rod ends, front bearings etc?

Could be that you've got something with some extra 'play' that surfaces when you try to brake... Just an idea...
All appears to be good I will double check everything.. Thanks.
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Old Jun 23, 2014 | 02:04 PM
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Originally Posted by CaseyJones
Does it pull the steering wheel or does the car feel more like it is drifting left? Bad trailing arm bushings will do that. Otherwise, something is badly worn in the steering linkage.
The car and the steering wheel both turn hard left when brakes are applied. More prevalent at lower speeds.
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Old Jun 23, 2014 | 02:46 PM
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If all is good with mechanical, check calipers. Gravity bleed caliper on right side and tap caliper with rubber mallet while bleeding. May have some air in caliper. Have you replaced any brake components?
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Old Jun 23, 2014 | 03:10 PM
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Brake hoses, they collapse internally and give a damn similar symptom....failure to release and so has residual pressures,

also examine the entire front suspension, upper and lower cross shaft joints there in the bushings....should be concentric on the shafts....obviously the ball joints and tie rod ends need be nice.....

check all frame welds.....all over that front suspension...these sharks are OLD man, and so stuffs goes rong over time.....

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Old Jun 23, 2014 | 03:11 PM
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Originally Posted by Bikergems
If all is good with mechanical, check calipers. Gravity bleed caliper on right side and tap caliper with rubber mallet while bleeding. May have some air in caliper. Have you replaced any brake components?
No but it looks like it had a full brake job a couple thousand miles ago by previous owner all appears to be good. rotors have a bit of surface rust on edges but that's it... I will bleed them all 4 corners. Thanks.
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Old Jun 23, 2014 | 03:14 PM
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Originally Posted by mrvette
Brake hoses, they collapse internally and give a damn similar symptom....failure to release and so has residual pressures,

also examine the entire front suspension, upper and lower cross shaft joints there in the bushings....should be concentric on the shafts....obviously the ball joints and tie rod ends need be nice.....

check all frame welds.....all over that front suspension
...these sharks are OLD man, and so stuffs goes rong over time.....

Will do thanks...
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Old Jun 23, 2014 | 06:22 PM
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If you do not have one invest in a service manual. Check rotor runout (thickness) 1" from edge of rotor in at least 4 places. A rotor that varies over .0005" causes pedal vibrations.
New is 1.250". Should be greater than 1.230". This is the minimum after refinishing.
If 1.215" or less REPLACE
Possible brake rotors may have been turned by previous owner.
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