SOHC.co.uk Forums > CB350/400

oil filter cover bolt

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ricardo:
Hi.
I've removed the oil filter cover to replace the oil filter. As you do!! The bolt I notice has a spring and piston mechanism within. How can I check this is functioning properly. Why do I want to know this Imhear you all say in unison! Well the bike came with a bolt on oil cooler. Reason not known but previous owner doesn't know why as these bikes did not have a reputation for overheating he said. I removed this at the same time as it looks bog ugly.
Is it possible that this bolt mechanism was not working and that is why someone added the oil cooler? 
That it why I want to find out if the parts work before I refit  the filter and top up oil etc.

Ricardo

paul G:
Ricardo,
                  It is the bypass valve incase the filter gets clogged.
Without testing the spring tension you won't know.
If in doubt buy a new OEM one ;)

Nurse Julie:
These bikes do have a reputation for running very hot, in fact, not just a reputation, its a fact.

taysidedragon:
Could it have been used as a race bike previously? Racers often need oil coolers because they're pushing the engines harder than normal use.

ricardo:
hi all.

Excellent advice thanks.
Will a new one come with the contents installed if I go down this route?

Ricardo

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