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Anyone replaced caliper seals?

 
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Adrian
Mad Brick Rider


Joined: 17 Aug 2007
Posts: 98
Location: Weston super Mare, Somerset, UK

PostPosted: Tue Oct 21, 2008 1:26 pm    Post subject: Anyone replaced caliper seals? Reply with quote

I've seized pistons on one of the front brake calipers and was wondering whether to replace with a s/h caliper or preferably redo the seals. BUT, I have no idea of how difficult a job this is, has anyone out there replaced the seals on their K1100?

TIA

Orinoco aka Adrian
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Adrian in Somerset, UK
K1100LT SE
145,000 miles and counting Smile

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DaveVoorhis
Flying Brick Rider


Joined: 22 Mar 2006
Posts: 223
Location: Derbyshire, UK

PostPosted: Tue Oct 21, 2008 3:19 pm    Post subject: Re: Anyone replaced caliper seals? Reply with quote

Adrian wrote:
I've seized pistons on one of the front brake calipers and was wondering whether to replace with a s/h caliper or preferably redo the seals. BUT, I have no idea of how difficult a job this is, has anyone out there replaced the seals on their K1100?

I've replaced the pistons and seals on mine. It was a straightforward job. The caliper halves have to be separated; the hardest part was removing the seized pistons -- I punctured them with a hammer and screwdriver and pulled them out. Be sure to replace the small O-ring between the caliper halves and it helps to have a dental pick to pluck out the old seals.
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Mystic Red
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Joined: 28 Mar 2005
Posts: 2330
Location: Twin Lakes Idaho

PostPosted: Tue Oct 21, 2008 6:49 pm    Post subject: Reply with quote

Clymers covers the rebuild and those particular instructions are fairly coherent.
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tmoons
Flying Brick Rider


Joined: 09 Oct 2008
Posts: 161

PostPosted: Wed Oct 22, 2008 6:57 am    Post subject: Re: Anyone replaced caliper seals? Reply with quote

Adrian wrote:
I've seized pistons on one of the front brake calipers and was wondering whether to replace with a s/h caliper or preferably redo the seals. BUT, I have no idea of how difficult a job this is, has anyone out there replaced the seals on their K1100?

TIA

Orinoco aka Adrian


Are you sure it is seized pistons? i had a stuck left front brake. (it kept on braking)
I found out that the lower rubber hose section was rotten on the inside. Result: little peices of rubber made their way down and plugged the holes and feed thrus in the caliper.

a good clean of the caliper and new hoses (EXPENSIVE!) solved it.

You could check the hose as follows: when you press 1 piston down, the other will come out (as the fluid won't travel up the hoses), (pistons on 1 side of the caliper)

Just my 2 cents.
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Moondog
Flying Brick Rider


Joined: 09 Oct 2004
Posts: 670
Location: Richmond Hill, Georgia

PostPosted: Wed Oct 22, 2008 12:31 pm    Post subject: Re: Anyone replaced caliper seals? Reply with quote

tmoons wrote:
Adrian wrote:
I've seized pistons on one of the front brake calipers and was wondering whether to replace with a s/h caliper or preferably redo the seals. BUT, I have no idea of how difficult a job this is, has anyone out there replaced the seals on their K1100?

TIA

Orinoco aka Adrian


Are you sure it is seized pistons? i had a stuck left front brake. (it kept on braking)
I found out that the lower rubber hose section was rotten on the inside. Result: little peices of rubber made their way down and plugged the holes and feed thrus in the caliper.

a good clean of the caliper and new hoses (EXPENSIVE!) solved it.

You could check the hose as follows: when you press 1 piston down, the other will come out (as the fluid won't travel up the hoses), (pistons on 1 side of the caliper)

Just my 2 cents.


Good two cents. Also don't destroy the piston until you have tried blowing it out. Put the caliper half face down with a rag over it and blow in the hole for the hose. It can get kind of messy so make sure you are away from the bike or anything painted. If it doesn't come out, try tapping it back in to the caliper half with a rubber mallet and then try air again. The piston maybe seized to the caliper wall.
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Adrian
Mad Brick Rider


Joined: 17 Aug 2007
Posts: 98
Location: Weston super Mare, Somerset, UK

PostPosted: Fri Oct 24, 2008 4:54 pm    Post subject: Reply with quote

Thanks for the replies, I'll give it a go. Definately the pistons seizing, I checked them out a few weeks ago.

Adrian
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Adrian in Somerset, UK
K1100LT SE
145,000 miles and counting Smile

https://sites.google.com/site/worlestone/
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