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Re: Front wheels don't turn !
[Re: Wedgeman]
#1769343
03/02/15 06:41 PM
03/02/15 06:41 PM
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Joined: Dec 2009
Posts: 20,631
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,631
in a cattle trailer down by th...
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Just off the top of my head, calipers could be froze, flex lines might be restricted not allowing fluid back to the master cylinder or there may not be any free play in the brake pedal pushrod to the master cylinder leaving constant pressure on the brakes.
I would also check to see if any rubber parts that touch brake fluid are swollen. That would indicate contamination or the fluid.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Front wheels don't turn !
[Re: Wedgeman]
#1769345
03/02/15 06:49 PM
03/02/15 06:49 PM
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Joined: Sep 2006
Posts: 3,749
Chowchilla,ca
Chassisman
master
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master
Joined: Sep 2006
Posts: 3,749
Chowchilla,ca
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Quote:
When I installed those disc brakes in the front,
I put brand new parts all around (calipers-lines-MC).....bleeded them beyond reasonable !
Dan
If your car was a brake drum front car you need the correct porportioning valve. Drum brake cars have more residual pressure to hold the shoes closer to the drum. Disc brake cars dont need as much. We use 10 psi on drum cars and 2 psi on disc cars. Look into that being the cause.
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Re: Front wheels don't turn !
[Re: Wedgeman]
#1769350
03/02/15 07:48 PM
03/02/15 07:48 PM
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Joined: Mar 2006
Posts: 9,826
MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,826
MI, usa
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Quote:
I plan to istall rear disc brake using GM calipers, Cherokee rotors and Dakota Master cyl...
Should use the Dakota prop valve ?
Dan
No, buy an adjustable valve. I wouldn't worry to much about the brake drag, pretty normal. Make sure the pads move nice in the brackets, it'll be fine.They're cheap and then you can get it where you want it. If It's a drag only car with skinny fronts put it in the front brake line.
Doug
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Re: Front wheels don't turn !
[Re: Wedgeman]
#1769352
03/02/15 09:34 PM
03/02/15 09:34 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Ok.........so get an adjust prop valve for the front....what about the rear ??? direct from the Dakota MC ?
Yep..... on your fronts.. loosen the bleeder and spin
the wheel.. if it turns freely then you have a issue..
I dont have any stop within a turn(disc brakes)...
also a little trick is run your front bearings a
little loose to get just a MINOR bit of wobble to
kick the pads back quicker
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Re: Front wheels don't turn !
[Re: Wedgeman]
#1769355
03/02/15 10:31 PM
03/02/15 10:31 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Let me get this.....
If I put the prop valve for the front and direct from the master to the rear, there will be more braking from the rear than the front ??
You are correct.. if you run big tires on the rear
and skinnies up front the fronts dont have the braking
ability so you want more from the rears
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Re: Front wheels don't turn !
[Re: Wedgeman]
#1769357
03/02/15 11:09 PM
03/02/15 11:09 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Ok thanks P !
But it doesn't solve my problem of front discs dragging..........
No it doesnt.. your pads are dragging for some reason..
either the pressure doesnt let them back or they
are rusty on the sliders... JMO
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DAMHIK 
If it has pressure you may have a residual valve in the brake master cylinder keeping pressure on the front disc brakes, not really needed if the master cylinder is mounted above the calipers 
residual valve to prevent the calipers draining back into and overfilling the master cylinders. Let us know what you find out 
