SOHC.co.uk Forums > CB350/400

Instument/Meter Cushion Seals - not the best design by Honda ?

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McCabe-Thiele (Ted):
I have found my Instrument bracket thought I would see what the actual Speedometer & Rev Counter are like and give them a bit of a clean.

When I removed what look like stainless steel backing covers I found quite a lot of rust on the lower edges of the back of the actual gauges - the seal iteself appears to be some sort of rubber with a sponge type insides to it - nice for holding water to let the back of the steel gauges rust away!

DS only want £15.48 for the replacements that from the photo look more square than round.

Is there an option thats better?

robvangulik:
The old ones lasted for almost half a century, when the new ones do the same, what's the problem?

kent400:
The part number for the foam cushions is 37242-323-701 and fit both gauges. The mounting plates are stainless steel.

Rusty gauge bases cause the cushions to stick to them. The bases were zinc plated  with the passage of time the plating has detreated and that needs to be addressed.
Re-plating is the best option but can be painted once the rust is removed' If that's the  preference tape over the lamp apertures. Most certainly you don't want rust flakes getting into the gauges.   

Athame57:
I have just changed my own tachometer cushion , the original was so perished it had gone brittle and was breaking up, and I'm about to change the less effect speedometer one too. I don't understand what you mean about the sponge though, I only see rubber, am I missing something? 

McCabe-Thiele (Ted):

--- Quote from: Athame57 on September 09, 2021, 09:11:29 PM ---I have just changed my own tachometer cushion , the original was so perished it had gone brittle and was breaking up, and I'm about to change the less effect speedometer one too. I don't understand what you mean about the sponge though, I only see rubber, am I missing something?

--- End quote ---

Looking more closely I think my rubber has perished with the bottom part sticking to the gauge when I removed it it looks like foam - in reality its the rubber that has just seperated to look like a thin foam.

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