Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: neat street on September 27, 2025, 02:54:54 PM
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Hi all, I have just got a new bleed screw for my 500 front caliper and it is 7mm? it seems that this is `standard`? mine takes a 6mm. did honda make two different sizes of bleed screws?
thank you for your input.
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7mm is the standard size on 500/4. That's the only size I know of as standard, the 750/4's use 10mm.
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7mm is the standard size on 500/4. That's the only size I know of as standard, the 750/4's use 10mm.
Thanks Nurse Julie :-) dont understand why mine is 6mm? thread pitch is the same
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7mm is the standard size on 500/4. That's the only size I know of as standard, the 750/4's use 10mm.
Thanks Nurse Julie :-) dont understand why mine is 6mm? thread pitch is the same
I've known owners to helicoil a knackered thread and fit an insert down to 6mm as that was the size bleed nipple they had laying about at the time🙄🙄🙄.
The 350/400/500/550 all use the 7mm.
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Is it a pattern caliper with a different bleed screw to a standard one?
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From what I can see, its standard??? thank you for your replies, guess someone has messed around with it at some time in its life :)
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the best option for repair I have seen is a stainless steel banjo bolt with bleed nipple in the top. (You leave the old broken nipple in place) I have this arrangement on mine and it seems to make bleeding easier. It's been there for 30 years through rain, shine and salt and still works perfectly.
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problem kinda solved... Filed the top of the bleed screw hole and yes, someone had put in a helicoil and also damaged the hole for the bleed nipple to work, solution throw it away and buy a replacement... thank you all for your help
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Look at mmatti on amazon, you get complete thing with pads and mounting bracket for what i think is a reasonable price
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Thanks Brian, yes thats a bargain :-)