Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: McCabe-Thiele (Ted) on August 02, 2023, 06:38:16 PM
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As it was missing on my 500 I am fitting the chain guard that bolts inside the left side chain case cover.
Two M6 bolts hold the protector in place, one has a spring washer, the other has a tongued washer part number 90532-323-000. that is shown as no longer available.
Is it okay to use a spring washer instead or is the tongued washer an essential locking tab?
Do I need to fabricate a lock washer for this location?
.(https://live.staticflickr.com/65535/53089566870_e4d660513e_o.gif) (https://flic.kr/p/2oTkUBQ)left-crankcase-cover_bigma000082e11_91d1 (https://flic.kr/p/2oTkUBQ) by Macabe Thiele (https://www.flickr.com/photos/187487200@N03/), on Flickr
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"Is it okay to use a spring washer instead or is the tongued washer an essential locking tab?"
It looks like the spring washer is on a bolt isolated from the chain run, with the tabbed bolt having extra security being in vicinity of the chain and sprocket rotation ?
I can't tell fully from the diag, but that would make sense for the type of fixing security they provide.
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"Is it okay to use a spring washer instead or is the tongued washer an essential locking tab?"
It looks like the spring washer is on a bolt isolated from the chain run, with the tabbed bolt having extra security being in vicinity of the chain and sprocket rotation ?
I can't tell fully from the diag, but that would make sense for the type of fixing security they provide.
Yes I can see that now you mention it - not sure where the tab locks into as it's not clear from the parts book - possibly it latches into the large round hole.
I will play safe & make a locking tab as I do not want to risk a bolt coming loose & striking the chain.
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Yes, I'd view as you do Ted, in that the lock tab appears to anchor in that nearby hole to secure.
Some of the others with more experience than I of 500 could likely shed some more focused light on it for you .
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I'd say you hit the nail on the head Nigel.
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"Is it okay to use a spring washer instead or is the tongued washer an essential locking tab?"
It looks like the spring washer is on a bolt isolated from the chain run, with the tabbed bolt having extra security being in vicinity of the chain and sprocket rotation ?
I can't tell fully from the diag, but that would make sense for the type of fixing security they provide.
Yes I can see that now you mention it - not sure where the tab locks into as it's not clear from the parts book - possibly it latches into the large round hole.
I will play safe & make a locking tab as I do not want to risk a bolt coming loose & striking the chain.
If you do not want it to come loose, just put thread lock on the bolt ;)
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I'd say you hit the nail on the head Nigel.
Cheers Ken, 500 experts have better knowledge about these detail :)
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Not so sure it’s knowledge Nigel, more common sense in a lot of cases and an understanding of how the Honda engineers seemed to think.