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Brake Bleeding Recommendations?

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Nick 50
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PostPosted: 19:13 - 10 Feb 2012    Post subject: Brake Bleeding Recommendations? Reply with quote

As part of the what seems a long drawn process of servicing "The Lemon", next on the list was replacing the front brake pads. Managed to get the old ones out easy enough, spent a good hour cleaning the old pads paint of the shimming plates. Stick the plates on the new EBC's and slide in to the caliper ................ "hmmmmm there is no way that very minimal gap will accommodate the brake disc, I need to push the piston in". Would it go in?? Like heck it would Confused .

In the end I ended up having to strip the caliper all together which I didn't want to as I have no way of bleeding the front brake.

So can anyone recommend a decent brake bleeding kit (or alternative) to get The Lemon back on the road?
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Current Bikes: ZX7r 97 (Black Beauty), VFR400 NC24 (The banana)
Previous Bikes: Aprilia Tuono 03 (The Beast), CBR600f (97)
First bike: A GZ125 Lemon.......
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iooi
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PostPosted: 20:21 - 10 Feb 2012    Post subject: Re: Brake Bleeding Recommendations? Reply with quote

Pump the pistons out a bit and clean them..... Carefully.

Then something like a G clamp to press them back in. Make sure its square on the pistons.

Oh and Workshop is the best place for this type of stuff... Plenty of people view and post in there, and you will get usefull answeres as well. Karma Thumbs Up
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whitedevil
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PostPosted: 21:03 - 10 Feb 2012    Post subject: Reply with quote

You don't need any fancy kit to bleed brakes. just a length a clear tubing, a jar and a spanner to open the bleed nipple.

pump lever, hold it on, open nipple, close nipple,release lever. repeat until clean brake fluid comes out with no bubbles in it.
make sure to keep the reservoirtopped up with clean fluid or you'll get air in the system.
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Nick 50
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PostPosted: 00:10 - 11 Feb 2012    Post subject: Re: Brake Bleeding Recommendations? Reply with quote

iooi wrote:
Pump the pistons out a bit and clean them..... Carefully.

Then something like a G clamp to press them back in. Make sure its square on the pistons.

Oh and Workshop is the best place for this type of stuff... Plenty of people view and post in there, and you will get usefull answeres as well. Karma Thumbs Up


I ended up having to bin the piston all together as it was corroded in places. I couldn't find new o-rings without buying the piston anyway.
The force I was applying and it not budging, I pretty much figured it wasn't good. The GZ has really poor rear drum brakes so need to make sure the front are spot on.

Cheers for the idea regarding the g-clamp will get a set over the weekend.


whitedevil wrote:
You don't need any fancy kit to bleed brakes. just a length a clear tubing, a jar and a spanner to open the bleed nipple.

pump lever, hold it on, open nipple, close nipple,release lever. repeat until clean brake fluid comes out with no bubbles in it.
make sure to keep the reservoirtopped up with clean fluid or you'll get air in the system.


I was looking for a kit that works the opposite way round. Where it starts in the container and then is fed through bleeding nipple and fed up the hose. I know they exist but struggling to name or find one.
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whitedevil
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PostPosted: 01:15 - 11 Feb 2012    Post subject: Reply with quote

You mean a reverse bleeding tool.



You can do it with a few simple bits of kit, costs about £2
You'll need a large syringe and some tubing.

Take the top off the reservoir, and remove the rubber gasket.

Using the syringe and tubing, suck the old brake fluid out, and dump it.

Put the syringe onto the nipple at the caliper.

Open the nipple.

Suck the remaining fluid out, and dump.

Fill the syringe with new fluid.

Attach to the nipple and squirt in new fluid until it comes out into the reservoir.

Close the nipple.

Top up the reservoir to the max level.

Bleed the brakes normally until air stops coming out. Use at least half the reservoir.

Use the old pads to push the pistons back as far as they will go. They should end up flush with the caliper body.

Fill the reservoir to the max level. This will stop it overflowing when you fit new pads.

Re-fit the rubber and top onto the reservoir.

Pump the brakes until they start working.
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dungbug
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PostPosted: 07:38 - 11 Feb 2012    Post subject: Re: Brake Bleeding Recommendations? Reply with quote

iooi wrote:
Then something like a G clamp to press them back in. Make sure its square on the pistons.


I usually put what's left of the old pad on top of the piston then use a clamp to push the piston back in place. Wink
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iooi
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PostPosted: 17:01 - 12 Feb 2012    Post subject: Re: Brake Bleeding Recommendations? Reply with quote

Nick 50 wrote:
I was looking for a kit that works the opposite way round. Where it starts in the container and then is fed through bleeding nipple and fed up the hose. I know they exist but struggling to name or find one.


This
I have one like it (better make than draper). Got via ebay. Works a treat.
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