SOHC.co.uk Forums > CB350/400

Oil Pump Washer?

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Deano400:

--- Quote from: Bryanj on November 05, 2018, 03:10:08 PM ---Have you recently washed out the filter housing? Without sizes looks a bit like the washer between filter and spring.

--- End quote ---

No Bryan, most recent in the bath was the oil pump. I change the solution each time I put something new in so I am thinking it must be from the oil pump.

Bryanj:
You are probably right, never had the reason to stir a 400 pump and nothing in the 500 one so just throwing ideas out there

thegreatpan:
Is an oil pump rebuild a must do?

Deano400:

--- Quote from: thegreatpan on November 05, 2018, 07:17:54 PM ---Is an oil pump rebuild a must do?

--- End quote ---

There are two reasons I tackled the oil pump.
1. One of the gearbox bearings was damaged shedding metal and some of the mains and big ends had clear signs that metal had been round the engine. So I wanted to check the state of the pump, some marks but still usable.
2. The age of the O rings, assuming no one had previously replaced them they would be 40 years old and getting tired.

Laverda Dave:
It's the oil pump washer and it sits in the housing under the oil pump gears. I didn't see mine either when I took it apart as the oil in the pump body makes it stick in the housing only to fall out when you put it the parts washer!

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