Honda-SOHC

Other Stuff => Tricks & Tips => Topic started by: jimv50 on June 25, 2016, 08:53:53 PM

Title: safely freeing a seized brake piston
Post by: jimv50 on June 25, 2016, 08:53:53 PM
This man is my new workshop hero.
Title: Re: safely freeing a seized brake piston
Post by: UK Pete on June 25, 2016, 09:09:03 PM
Good tip thanks for sharing
pete

Title: Re: safely freeing a seized brake piston
Post by: onethumb on July 17, 2016, 11:57:03 AM
That is a good tip. Used the same idea on the swing arm bushes.
Title: Re: safely freeing a seized brake piston
Post by: royhall on July 17, 2016, 03:59:59 PM
Is that an expanding rawl bolt in there. Like it.

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Title: Re: safely freeing a seized brake piston
Post by: Green1 on July 17, 2016, 08:05:54 PM
I prefer using compresed air and forgetting to cover the caliper with a rag so it shoots across the garage when it pops out.  ::)
 
Title: Re: safely freeing a seized brake piston
Post by: ST1100 on July 17, 2016, 08:59:50 PM
I prefer using compresed air and forgetting to cover the caliper with a rag so it shoots across the garage when it pops out.  ::) 
LOL! Ditto (on the compressed air... even build an adaptor-hose), but I first shim out the calliper with a selection of wooden strips...  ;)
Title: Re: safely freeing a seized brake piston
Post by: Green1 on July 17, 2016, 10:01:47 PM
Why didn't I think of that to obvious I suppose   ;D
Title: Re: safely freeing a seized brake piston
Post by: Trigger on July 17, 2016, 10:06:52 PM
After doing one on a CX500 with compressed air and forgetting to take my hand out the way, found it much safer with a grease gun ;D
Title: Re: safely freeing a seized brake piston
Post by: Green1 on July 17, 2016, 10:20:29 PM
It doesn't go with the same exciting bang though
I'm also to tight to waist the grease  ;D
Title: Re: safely freeing a seized brake piston
Post by: AshimotoK0 on July 17, 2016, 11:06:22 PM
Assuming you are replacing the seal, I just heat the alloy body with a Mapp gas torch and then tap the housing sharply onto a flat steel plate to free the piston off. Has worked fine for the last 3 calipers I stripped. These were the original Honda ones as fitted to 400/4, /250/360G5/500/4 & 750/4 though.
Title: Re: safely freeing a seized brake piston
Post by: royhall on July 18, 2016, 08:24:19 AM
I use and old master cylinder and hose. Fill it with brake fluid and pump till it pops out. Comes out a bit more gently than compressed air but is a messy job with the fluid running out at the same time as the piston.
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