Author Topic: CB 550 O rings  (Read 801 times)

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Offline uksparky

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CB 550 O rings
« on: January 14, 2018, 11:26:59 AM »
Small oil leak from one of the end caps cylinder head, can you give me the size of the O rings ..two each end..i was thinking Nappa parts...thanks
Present bike 1982 900C Custom

Offline Deltarider

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Re: CB 550 O rings
« Reply #1 on: January 14, 2018, 12:16:36 PM »
6 X 3 mm. Source: p.2-3 of this early parts list: http://www.honda4fun.com/pdf_parts_list/pdf_spac500/CB500-71/CB500-71_1.pdf
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Offline uksparky

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Re: CB 550 O rings
« Reply #2 on: January 16, 2018, 04:19:58 PM »
Thanks Deltarider..    i trolled the local parts stores and nothing, i will go to my local Honda and order the seals...on line shipping charges kill it
Present bike 1982 900C Custom

Offline MetroRedneck

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Re: CB 550 O rings
« Reply #3 on: January 18, 2018, 09:08:22 AM »
Swap the washers too.

Offline uksparky

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Re: CB 550 O rings
« Reply #4 on: January 18, 2018, 04:28:07 PM »
Swap the washers too.

Washers ??.......    ordered O rings from local Honda dealer today $2.04 each plus tax
Present bike 1982 900C Custom

Offline MetroRedneck

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Re: CB 550 O rings
« Reply #5 on: January 19, 2018, 09:22:09 AM »
Part 12 and 14 here.  If you've recently removed the valve cover, they may be leaking, not necessarily the o-rings.


Offline uksparky

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Re: CB 550 O rings
« Reply #6 on: January 19, 2018, 04:22:24 PM »
Thanks for the diagram ..yes i remember them washers, when i had the engine apart the engine gasket set did not have the four #18 O rings so i had to re use old ones, 2k later they are seeping oil right side
Present bike 1982 900C Custom