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Unread 03-11-2012, 05:56 PM   #1
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Default Bleeding new Jake's Front Disc Brakes

I'm moving this thread from impalass88's wonderful "Project Finished" thread, which I'd hijacked, talking about Jake's Front Disc brakes. Here is the old thread:

Finally finished my winter project...1991 Club Car DS

So, I've gotten the front disk brakes installed. Once I was finished, the callipers just barely moved. Scottyb sent me some links to bleeding the brakes, and I did the manual technique. Daughter mashed on the brakes, I released the bleeder valve letting out bubbles and brake fluid. I tightened the valve back, she'd release the brake pedal. We did this over and over, til the fluid ran clean. Still didn't work.

Took a break, then I took the cap off the reservoir and noticed the rubber inner cover was inverted. I took the rubber thing out of the reservoir too, then loosely put the cap back on. We pumped, bleed some more and a bunch of bubbles came rushing out. After it started running clean again, I noticed the brakes were working! Dragging a bit, but hot dog, I could spin the tires then push the brakes and bam, they'd stop.

A few seconds later I tried the brakes again to gloat, and they didn't work! Argh! I put the rubber thing and cap back on the reservoir (which we'd keep filled with 3 DOT during this whole process), and no brakes. We bled some more, just solid fluid coming out. But the calipers weren't moving at all now.

I did notice the pads were dragging more then they ever had. I took off a caliper and held it up high, tried bleeding more, but just clear fluid was coming.

Have I extended the brake piston too far? I am attaching a picture. But even though the they are dragging, it's not enough to stop, like it was doing mid-process.
Attached Images
File Type: jpg discBrakes.jpg (76.9 KB, 16 views)
File Type: jpg brakesOff.jpg (69.5 KB, 13 views)
File Type: jpg brakesOn.jpg (67.9 KB, 14 views)
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Unread 03-11-2012, 06:55 PM   #2
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Default Re: Bleeding new Jake's Front Disc Brakes

. . . .
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Unread 03-11-2012, 06:57 PM   #3
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Default Re: Bleeding new Jake's Front Disc Brakes

Louis, this looks like a job for SUPERMAN! . . . .



Attachment 63526 Tahoe?????
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Unread 03-11-2012, 07:51 PM   #4
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Default Re: Bleeding new Jake's Front Disc Brakes

Bleeding these brakes is a serious pain in the @$$! I finally gave up and took it to a shop that power bled them......... best $49 I ever spent.


OT
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Unread 03-12-2012, 07:25 AM   #5
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Default Re: Bleeding new Jake's Front Disc Brakes

I remember TerryH said he 'pre bled" his on the bench as per a you tube video he saw, but still had a ton of air left when he did it the old fashioned way once they were installed.
Seems these things are a bugger to purge all the way.
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Unread 03-12-2012, 01:23 PM   #6
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Default Re: Bleeding new Jake's Front Disc Brakes

Success. Left the caliper on top of the cart overnight. Decide to give bleeding another go today. Big gobs of air bled out when I gave the brakes a double pump, while loosening/tightening the bleeder valve. After about 10-20 reps, everything was clear, and the brakes will now stop TIGHT. Success!

The pads drag a little on both wheels right now when the brakes are released. Will that loosen up with some use?
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Unread 03-12-2012, 02:07 PM   #7
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Default Re: Bleeding new Jake's Front Disc Brakes

I have heard they will relax after some use - but since mine isnt running yet - I cannot personally attest.
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Unread 02-04-2016, 08:16 PM   #8
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Default Re: Bleeding new Jake's Front Disc Brakes

These brakes ARE A PAIN! Went and bought a vacuum pump bleeder. Still no dice! Think it's time to pay a professional.
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Unread 02-04-2016, 08:39 PM   #9
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Default Re: Bleeding new Jake's Front Disc Brakes

with small master cylinders it is better to back bleed them. use an oil can and pump fluid into the master cylinder from the wheel cylinder. clamp small tube on oil can spout push other end over bleeder valve. open bleeder valve and pump fluid until you get fluid to master cylinder. close valve and do the same on other wheel. do not press brake until you have done both wheels. pump enough fluid this way to fill master cylinder. half for each wheel. always worked great on my airplane had same type set up.
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Unread 03-13-2016, 04:19 PM   #10
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Default Re: Bleeding new Jake's Front Disc Brakes

Quote:
Originally Posted by mrgolf View Post
with small master cylinders it is better to back bleed them. use an oil can and pump fluid into the master cylinder from the wheel cylinder. clamp small tube on oil can spout push other end over bleeder valve. open bleeder valve and pump fluid until you get fluid to master cylinder. close valve and do the same on other wheel. do not press brake until you have done both wheels. pump enough fluid this way to fill master cylinder. half for each wheel. always worked great on my airplane had same type set up.
completely agree with this method, that's how I bleed the brakes on my bikes
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