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Honda CB750/900/1100F SuperSport Website: SuperSport Forums |
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kiwihonda004
Hawk
Joined: Jul 14, 2012
Posts: 417
Location: New Zealand
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 Posted:
Fri Jul 03, 2026 7:14 am |
 
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Hi Folks.
Decided to check front brakes on the cb that I restored a long time ago as they were not up to my standard.
Stripped calipers and found piston rubbers a little hard and pads worn.
Condition inside calipers were very clean so a quick clean new seals and lube up good to go.
I have been running DOT 5.0 brake fluid all these yrs and all the other rebuilds with no problems, I do recommend it |
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P A Hyland |
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tomk1960
Red CB1100F
Joined: Nov 13, 2009
Posts: 5026
Location: Worcester, MA
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Fri Jul 03, 2026 1:21 pm |
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I've been using DOT5 for many years on all of my restorations. I've never had an issue and would never go back to DOT3 or DOT4. |
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Powder coating services, specializing in all F components as well as brake system restoration.
Dealer for Galfer, Spiegler, Apex, APE, 4-into-1, KOSO, Venhill, ProBoltUSA, and Cometic.
CB1123 RMII and WAY faster Kawasakis. |
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SteveG
Black CB900F
Joined: Apr 07, 2006
Posts: 1626
Location: Skaneateles, NY
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Fri Jul 03, 2026 2:44 pm |
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Do you start with all new seals, rubber parts and lines? Or in an old(er) system, what do you flush the system with?
Steve |
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‘79 CB750(810)F, \'81 CB900(985)F, \'82 CB900(Going to be 1100)F, \'82 CBX, \'06 WeeStrom, ’18 Kawa Z900RS, \'22 CanAm Ryker Rally |
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Hondo57
CB1100F
Joined: Jun 20, 2014
Posts: 2382
Location: Grand Rapids, Michigan
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Fri Jul 03, 2026 9:04 pm |
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My experience is starting brand new if you are switching to Dot 5. If it isn't spotless it will eventually booger up. How do you completely clean it?...dont know? |
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Greg |
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tomk1960
Red CB1100F
Joined: Nov 13, 2009
Posts: 5026
Location: Worcester, MA
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Fri Jul 03, 2026 10:21 pm |
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| SteveG wrote: |
Do you start with all new seals, rubber parts and lines? Or in an old(er) system, what do you flush the system with?
Steve |
Steve - you're better off to tear down, clean, rebuild with new seals, (calipers and masters) and replace the lines. |
_________________
Powder coating services, specializing in all F components as well as brake system restoration.
Dealer for Galfer, Spiegler, Apex, APE, 4-into-1, KOSO, Venhill, ProBoltUSA, and Cometic.
CB1123 RMII and WAY faster Kawasakis. |
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kiwihonda004
Hawk
Joined: Jul 14, 2012
Posts: 417
Location: New Zealand
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Sat Jul 04, 2026 4:45 am |
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Full strip down and replace all rubber components.
DOT 5 was used in the military for reasons that it sits around a lot which suits me.
Non corrosive and will not absorb water but if water gets in it will not breakdown,could cause a rust cavity in a section.
I have found a lot of mechanical parts personal and aligned staff cannot get their heads around this.
Peter. |
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P A Hyland |
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Hondo57
CB1100F
Joined: Jun 20, 2014
Posts: 2382
Location: Grand Rapids, Michigan
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Sat Jul 04, 2026 7:04 am |
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You can also completely bleed and replace Dot 3 or 4 every year or two. That works also. |
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Greg |
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