Author Topic: Removing Old Brake Pad That is Stuck in Caliper  (Read 4044 times)

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Offline ironandtime

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Removing Old Brake Pad That is Stuck in Caliper
« on: March 31, 2014, 09:13:03 pm »
I thought I'd share what turned out to be a simple solution for removing an old brake pad that was stuck in the caliper. I simply drilled a hole in the middle of the face of the brake pad, then screwed in a small eye bolt (matching the hole size). Then all I had to do was to grip the eye bolt with channel lock pliers, and the pad came out right away.



1978 Honda CB550

Offline Stev-o

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #1 on: May 19, 2014, 05:00:34 am »
How will you get the piston out?
'74 "Big Bang" Honda 750K [836].....'71 Honda 750K project.....'76 Honda 550F.....K3 Park Racer.....K5 Fiddy Dolla Special!......and a Bomber!............plus plus plus.........

Offline tomk1960

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #2 on: May 19, 2014, 05:27:35 am »
Great suggestion on getting the pad out - thanks!
« Last Edit: May 19, 2014, 05:29:19 am by tomk1960 »
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Offline Honda550k

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #3 on: May 19, 2014, 11:54:21 am »
What I did was I hooked mine up to a mc and just pumped the piston and pad out.

Offline 70CB750

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #4 on: May 19, 2014, 12:02:02 pm »
Maybe pumping the piston out would get the pad out too?  ;D

Offline Stev-o

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #5 on: May 19, 2014, 05:44:07 pm »
Maybe pumping the piston out would get the pad out too?  ;D

That's what I was thinking. 
'74 "Big Bang" Honda 750K [836].....'71 Honda 750K project.....'76 Honda 550F.....K3 Park Racer.....K5 Fiddy Dolla Special!......and a Bomber!............plus plus plus.........

Offline tomk1960

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #6 on: May 19, 2014, 07:18:28 pm »
Maybe pumping the piston out would get the pad out too?  ;D

I'm going to be rebuilding the front brakes on my son's 550 and that's exactly what I did:



I used the C-clamp to keep the piston from coming out too fast or with force.



I pumped it out until it touched the clamp, then loosened it up a bit, pumped some more, etc.  I had it all apart in a few minutes.  What a mess it was inside!  The brakes will be like new when I'm through with them.
2001 Kawasaki Vulcan 1500 Classic
1984 VF1000F Interceptor
1983 CB1100F Super Sport
1983 VF750F Interceptor
1982 CB900F Super Sport
1978 GL1000
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Offline ironandtime

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #7 on: May 19, 2014, 09:08:44 pm »
Hey guys - I should have clarified...that there piston and brake pad were totally seized up and rusted all to hell on the inside. Pumping the brake to get the piston to push it out was a no go, so I had to take it to the next step!
1978 Honda CB550

Offline Stev-o

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #8 on: May 19, 2014, 09:13:37 pm »
How will you get the piston out?
'74 "Big Bang" Honda 750K [836].....'71 Honda 750K project.....'76 Honda 550F.....K3 Park Racer.....K5 Fiddy Dolla Special!......and a Bomber!............plus plus plus.........

Offline krusty

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #9 on: May 19, 2014, 10:23:03 pm »
Hey guys - I should have clarified...that there piston and brake pad were totally seized up and rusted all to hell on the inside. Pumping the brake to get the piston to push it out was a no go, so I had to take it to the next step!

Sometimes you need more pressure than the MC can give. This is where the grease gun method shines, and less mess. See this thread;
http://forums.sohc4.net/index.php?topic=101649.msg1551835#msg1551835
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Offline 70CB750

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #10 on: May 20, 2014, 02:57:16 am »
Hey guys - I should have clarified...that there piston and brake pad were totally seized up and rusted all to hell on the inside. Pumping the brake to get the piston to push it out was a no go, so I had to take it to the next step!

As long as you don't drill the housing to push the piston out  ;D

Somebody had a picture here what the PO did to a brake caliper.  Drilled a hole, pushed the piston out and plugged the hole again.

For stuck piston off the bike or when the MC is not strong enough there is either grease gun or compressed air.  Compressed air - from what I understand, I always use grease gun - is more fun, since the piston shoots out very fast, but grease gun is the preferred method.

Offline vfourfreak

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #11 on: May 20, 2014, 04:34:08 am »
Hey guys - I should have clarified...that there piston and brake pad were totally seized up and rusted all to hell on the inside. Pumping the brake to get the piston to push it out was a no go, so I had to take it to the next step!

As long as you don't drill the housing to push the piston out  ;D

Somebody had a picture here what the PO did to a brake caliper.  Drilled a hole, pushed the piston out and plugged the hole again.

For stuck piston off the bike or when the MC is not strong enough there is either grease gun or compressed air.  Compressed air - from what I understand, I always use grease gun - is more fun, since the piston shoots out very fast, but grease gun is the preferred method.

I had a Yamaha TZ caliper split last year. The piston on one side came out fine, other side, not a chance. For  several reasons I could not set up the grease method, so I went for compressed air. I stood behind it, and set up a cardboard box  well padded to receive the piston. Applied the air in many short bursts, I could see the piston straining against the seal. Bit by bit it moved, then POP out she came and almost went through the end of the box which was padded with a large jiffy bag. Certainly a method to be done with caution.

Kev

Offline Oz350Four

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #12 on: April 23, 2015, 03:43:09 am »
 ??? I've just finished removing all the parts from my cb350f front end including brakes etc.
The bake pad is stuck in the calliper still. I've read the posts about grease gun yada yada yada...
The MC is still connected to the lines as is the calliper, however the brake fluid has been removed.
As I don't have any brake fluid at my disposal would it be Ok to fill the line and MC reservoir with water to push it out and then draining it again..??  I wont be putting it back onto the bike for some time and will it probably be dry by time I go to reinstall.

 
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1972 CB350F Four - Project Ol' Red (current)
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Offline calj737

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #13 on: April 23, 2015, 03:53:28 am »
I wouldn't, due to the presence of water in your system being a long term problem. Moisture causes corrosion and all that yada yada yada nonsense.

You have two simple solutions: DOT 3/4 or the old grease gun method. Which do you prefer? If it were me, I'd use DOT 3 as it will-

1-allow me to purge the old lines of all the old crap built up over 40 years
2- allow me to extract a stuck piston without further clean up necessary (grease gun works, but is a tad messy)
3- provide me with enough fluid to refill my system after a proper rebuild of the caliper and bleed of the system.

DOT 3/4 is available nearly anywhere and is the simplest solution to solve your issues. Yada yada yada and all that....
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Offline Stev-o

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #14 on: April 23, 2015, 05:30:17 am »
Water...you kidding?   Yadayada, listen to Cal, yadayada
'74 "Big Bang" Honda 750K [836].....'71 Honda 750K project.....'76 Honda 550F.....K3 Park Racer.....K5 Fiddy Dolla Special!......and a Bomber!............plus plus plus.........

Offline koendd

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #15 on: April 23, 2015, 06:44:07 am »
Water...you kidding?   Yadayada, listen to Cal, yadayada

my thoughts exactly! doesn't cost much!

Yad... (nevermind... :) )
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Offline LesterPiglet

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #16 on: April 23, 2015, 10:13:13 am »
Throw some thin oil in, it won't hurt it.
'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


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Offline Oz350Four

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #17 on: April 23, 2015, 04:04:09 pm »
Thanks folks I'll wait till I can get the Dot 3 fluid as you've suggested.
And also thanks for enlightening me about the intricacies of water in a brake system / line... I wasn't sure that's why I asked the forum...

I'll make sure the yada word doesn't get mentioned again by me... After that lot I'll have trouble even with yoda..!!!
"Me speed officer...?? never..!!!"

1972 CB350F Four - Project Ol' Red (current)
2007 Harley Davidson Softail Deuce - Sold to start this project.

Offline el__burro

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Re: Removing Old Brake Pad That is Stuck in Caliper
« Reply #18 on: June 26, 2015, 05:17:35 pm »
Did a few times with a grease gun,  cheap and effective.
El__burro