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Author Topic: CB550 Oil Leak  (Read 349 times)

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Offline RickFraser

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CB550 Oil Leak
« on: June 30, 2022, 08:03:09 AM »
Hi Guys, my CB550 is leaking oil from (I think) the end side cover of the cylinder head cover. There are 2 o rings under each. I can't get them for a week. The part number is 91319-323-000
Does anyone know a good off the shelf replacement for this o ring?

Thanks, Rick.
« Last Edit: June 30, 2022, 08:12:06 AM by RickFraser »
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Offline bryanj

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Re: CB550 Oil Leak
« Reply #1 on: June 30, 2022, 08:27:03 AM »
More likely that the soft washer between the bracket the cover screws to and cam cover is leaking
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

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Offline Little_Phil

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Re: CB550 Oil Leak
« Reply #2 on: July 01, 2022, 01:13:16 AM »
Think they are 6 x 3mm cross section. But as Bryan says other potential leak is under the L bracket that holds the covers in place. There is a crush washer under bracket, but if it's here do not overtighten 6mm bolt as it can strip.
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