Wilwood disc brakes sticking

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redliner
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Wilwood disc brakes sticking

Post by redliner » Mon Apr 08, 2019 4:40 pm

Hey guys, I got my Stude out for the first time this spring and it seems the mastercylinder is not relieving the pressure very well when I let off the brakes. It takes quite a while ( 15 minutes?)for the pressure to be off (as far as turning the tires by hand.) I have A Wilwood M/C with Dynalight 120-6818 calipers on all 4 corners. Will this heal??? I hope cuz I hate messin with brakes. They haveworked fine for 5 years or so. Easy fix? I hate tearing into them....

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BOOT
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Re: Wilwood disc brakes sticking

Post by BOOT » Mon Apr 08, 2019 9:40 pm

If you open the bleeder do they let up? If so could be bad soft lines
I know as much as I can learn and try to keep an open mind to anything!

If I didn't overthink stuff I wouldn't be on speedtalk!

redliner
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Re: Wilwood disc brakes sticking

Post by redliner » Tue Apr 09, 2019 2:01 pm

BOOT wrote:
Mon Apr 08, 2019 9:40 pm
If you open the bleeder do they let up? If so could be bad soft lines
I pulled the M/C and sent it back to Wilwood. The brakes would free up when I cracked line at M/C and the M/C is still under pressure.

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Re: Wilwood disc brakes sticking

Post by pdq67 » Tue Apr 09, 2019 11:38 pm

Please note this!!

Make sure your M/C pushrod CAN'T fall out if it's piston sticks!

If it does, the pushrod MAY fall out and then you won't have any brakes!

I used a big P/B M/C on my car and fabbed a retainer that holds the pushrod if the piston ever sticks!

Power M/C's have shallow piston holes that the pushrod may fall out if stuck and non power M/C's have deep holes in the piston so the pushrod can't fall out!

Please check this closely!

pdq67

redliner
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Re: Wilwood disc brakes sticking

Post by redliner » Sun Apr 14, 2019 10:06 am

pdq67 wrote:
Tue Apr 09, 2019 11:38 pm
Please note this!!

Make sure your M/C pushrod CAN'T fall out if it's piston sticks!

If it does, the pushrod MAY fall out and then you won't have any brakes!

I used a big P/B M/C on my car and fabbed a retainer that holds the pushrod if the piston ever sticks!

Power M/C's have shallow piston holes that the pushrod may fall out if stuck and non power M/C's have deep holes in the piston so the pushrod can't fall out!

Please check this closely!

pdq67
I think I did this when I built it but will double check, thanks!!!

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