Lower crankcase

[Caley-Thistle]

Hi from the North of Scotland....

Just been cleaning out my crankcases before reassembling the engine when I heard a 'clink' and found this washer on the tray in my degreasing bath. The washer measures approximately 21mm OD x 14.5mm ID x 1mm thick. It was whilst I was cleaning the lower crankcase. All that is in the crankcase whilst washing was the gear drum and forks, the oil pump is removed.
Any ideas from anyone, where the washer/spacer is from please? I have drained the degreaser bath and checked for any other washers or items in there but it is clean. I have also looked through all the parts diagrams like the ones on cmsnl.com but can't find anything similar.



Hope someone can help me....

Thanks

Caley-Thistle

[NobleHops]

Sorry I'm no help, but welcome!

N.

[EMS]

There are a couple of different thrust washers in the transmission. If this is one of them.. I dunno..

[Jeff Bennetts]

That damn near looks like one of the washers that are under the valve spring in the head but without going out to the garage to check it's just a guess, if no one chimes in soon I'll go check but at the moment it's raining buckets.

[EMS]

That damn near looks like one of the washers that are under the valve spring in the head but without going out to the garage to check it's just a guess, if no one chimes in soon I'll go check but at the moment it's raining buckets.

I was thinking of that also, Jeff. The outer seat looks like that, don't know if it's 21mm OD, though

[Caley-Thistle]

If it is what you say, a valve spring seat, it will be intriguing as I haven't dismantled the head yet. The engine has definitely been stripped before by a previous owner by the amount of gasket sealant in it. And the odd few sheared M6 bolts found whilst disassembling.
Still, adds to the fun.

All the best

Caley-Thistle

[Jeff Bennetts]

There should be two per hole,,,,,,, that's what she said.

[EMS]

There should be two per hole,,,,,,, that's what she said.

...and sometimes they stick quite stubbornly to the cylinder head and it's hard to see if they are there or not. A magnet helps to get them out.

[barryadam]

There should be two per hole,,,,,,, that's what she said.

I'll have what he's having....

[atospampa]

hola te saludo desde argentina...parece ser la arandela del filtro de aceite talvez al cambiar el aceite y armar el filtro se haya caido y pasado directamente al carter....saludos

[NobleHops]

Google translate sez:

hello greetings from Argentina ... you seem to be the oil filter washer maybe to change the oil and filter arm has been dropped and passed directly to the crankcase .... greetings

[preston]

thrust washer from shifter shaft ( after cover removed)

[Larry Zimmer]

Thanks for the Knowledge Base, Preston. Folks like you that make this easy.