Author Topic: Removing stuck/rusted caliper bleeder valve  (Read 9968 times)

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Offline Nortstudio

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #25 on: October 27, 2010, 01:54:01 PM »
Gotcha. I'm going to try the acetone method, and then worst case, I'll get one of those cheap torches at hardware store and play it VERY safe...
1976 CB550K...in progress
1975 CL360...eventually custom
2009 Husqvarna TE610

a blog about wrenching in Barre, VT

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Offline steam-powered man

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #26 on: October 27, 2010, 01:58:40 PM »
i warm up the surrounding area, not the nipple itself.  (insert crudeness here  ;D).   
1976 r75/6 --- mine since 1980
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Offline Nortstudio

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #27 on: October 27, 2010, 02:08:12 PM »
Crude remark aside, that's a new tip. :)

So you heat the caliper? Doesn't it make it more likely to blow up?  Closer to the brake fluid?
1976 CB550K...in progress
1975 CL360...eventually custom
2009 Husqvarna TE610

a blog about wrenching in Barre, VT

“Success is dependent on effort.”
~Sophocles



Offline DavePhipps

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #28 on: October 27, 2010, 05:42:58 PM »
Good luck to you Norstudio. I went out and bought an 8mm 8point socket today. Mounted the caliper on the bike. Whacked the bleed nipple a few times with a hammer and went at it with the ratchet. The bleeder opened right up with no damage.
I hope it ends up being as easy for you.

BTW, yes I was serious about the nitric acid. It's what some shops use to remove ferrous metal (bolts) from aluminum objects.
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90 FZR600 RA
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78 GL1000
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Offline BobbyR

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #29 on: October 27, 2010, 05:56:55 PM »
The acetone and ATF mixture works due to the fact the ATF is highly thinned by the acetone which allows it to work into threads. Acetone evaporates very rapidly allowing the ATF to go back to it;s original viscosity and lubricate the threads. Acetone evaporates in under a minute or two which is why you cannot buy a 50/50 acetone mix commercially. WD40 and the rest are mostly kerosene and solvents.
But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?



Offline steam-powered man

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #30 on: October 27, 2010, 08:04:30 PM »
caliper stays mounted when i heat it, piston can't go anywhere. 
1976 r75/6 --- mine since 1980
1997 ducati 900ss/cr



Offline Nortstudio

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #31 on: October 28, 2010, 06:23:51 PM »
FINALLY!!!  And I mean FINALLY got the blessed valve out if the caliper.

Want to thank all those that helped with tips and tricks. I ended up using the acetone and ATF blend, and then had to use vice grips with cloth because the thing was completely stripped. Hammered it now and again too - but avoided my date with destiny, by way of a blow torch. Next time...

In the photo below you will see the evil nipple, as well as my wrenching assistant in the background :). If only I had a sidecar!

PS: TT, there is a nice new rubber cap on top of the new valve I put in there!

1976 CB550K...in progress
1975 CL360...eventually custom
2009 Husqvarna TE610

a blog about wrenching in Barre, VT

“Success is dependent on effort.”
~Sophocles



Offline DavePhipps

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #32 on: October 28, 2010, 06:59:19 PM »
WOOHOO!!!!!!
Now bleed those brakes and go for a test ride
Bikes:
90 FZR600 RA
74 CB550k
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72 CB500K



Offline Nortstudio

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #33 on: October 28, 2010, 07:04:49 PM »
I gave up after I got it out because I never grabbed a hose for bleeding!  I guess after taking so long I guess I still thought I had a few DAYS left to grab some ;)

I moved onto other pressing matters, so overall, a great SOHC day.
1976 CB550K...in progress
1975 CL360...eventually custom
2009 Husqvarna TE610

a blog about wrenching in Barre, VT

“Success is dependent on effort.”
~Sophocles



Offline BobbyR

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #34 on: October 28, 2010, 08:07:20 PM »
FINALLY!!!  And I mean FINALLY got the blessed valve out if the caliper.

Want to thank all those that helped with tips and tricks. I ended up using the acetone and ATF blend, and then had to use vice grips with cloth because the thing was completely stripped. Hammered it now and again too - but avoided my date with destiny, by way of a blow torch. Next time...

In the photo below you will see the evil nipple, as well as my wrenching assistant in the background :). If only I had a sidecar!

PS: TT, there is a nice new rubber cap on top of the new valve I put in there!



Congratulations!!!!!! where did you get the new bleeder, I will be following my own advice in a few weeks.
But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?



Offline cookindaddy

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #35 on: October 28, 2010, 08:14:50 PM »
I got mine from Honda. They are still available. As well as the cap. Reasonably priced.
George with a black 78 CB750K (in Lion's Head, Ontario, Canada)
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Offline Nortstudio

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #36 on: October 28, 2010, 08:22:52 PM »
I learned the hard way that none of the Honda/yamaha/kawi uber dealers in NYC had parts when I called. So I just ordered from bike bandit.

I forgot to mention that making flat side on the completely stripped valve with a dremel really did the trick. Not sure I would have gotten it out if I hadn't done that.
1976 CB550K...in progress
1975 CL360...eventually custom
2009 Husqvarna TE610

a blog about wrenching in Barre, VT

“Success is dependent on effort.”
~Sophocles



Offline BobbyR

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #37 on: October 28, 2010, 08:27:32 PM »
Thanks fellas.
But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?



Offline cookindaddy

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #38 on: October 29, 2010, 05:29:40 AM »
Honda dealers don't have the parts for our bikes in stock, but they will order them for you and usually have them the next day. This is usually quicker than buying on-line and their prices I've found are comparable or better than on-line. You have to the part number since the Honda dealers (here in Canada anyway) don't have p/n's in their system before 1979 (go figure).
George with a black 78 CB750K (in Lion's Head, Ontario, Canada)
My photo gallery



Online Stev-o

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #39 on: October 30, 2010, 08:25:59 AM »
Congrats, you won the battle!

So, you'd like a sidecar like this guy I snapped a photo of?!!?

'74 Honda 750K [836]   '77 Honda 750K project    76 Honda 550K cafe      plus plus plus



Offline Nortstudio

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #40 on: October 30, 2010, 08:45:18 AM »
Nothing would please me more! 

Problem is, my pup is 12 now, so it would need to be more like a dog bed with wheel on it, attached to the side of my bike :)

This is a great photo though!  She would have loved that, in her day.
1976 CB550K...in progress
1975 CL360...eventually custom
2009 Husqvarna TE610

a blog about wrenching in Barre, VT

“Success is dependent on effort.”
~Sophocles



Offline sick50ford

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Re: Removing stuck/rusted caliper bleeder valve
« Reply #41 on: January 19, 2011, 10:58:32 AM »
I should have read this before snapping my bleeder off clean, never seen that happen before.

Can Anyone  tell me the tap size please?

 

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