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eorose · 07-26-2011, 08:22 AM

Hi guys -

I'm having trouble finding a part. If anyone has worked on the slave cylinder on these bikes, you'll know there is one oil seal on the piston itself where the clutch pushrod makes contact with the piston. There is also another oil seal in the crankcase itself that keeps the oil (gear oil, I assume) in the crankcase. It is this second seal that I cannot find. It looks to be very similar in size to the piston seal but slightly (very slightly) larger.

The piston seal is 8 X 18 X 5 (part #243094-001).

I have gotten part 242919-001 (12.5 X 25 X

and obviously this is way too big (should have looked at the dimensions first).

I thought maybe it was 242781-001 but that is 14 X 24 X 6, which still seems too big.

Can anyone tell me for sure which part I need?

The_AirHawk · 07-26-2011, 08:34 AM

Do you know the material? (viton, buna-n, epdm, etc.) If you cannot find the "actual" seal, you might try a local bearing-parts house. Of-times, they can source "generic" seals and bearings, but it may take a bit to get it to you if they don't deal in metric that often (I happen to have a local parts house that DOES - got all the bearings and seals to rebuild a japanese grey-market tractor gearbox recently).

Good Luck.

07-26-2011, 08:22 AM	#1
eorose Registered Member Join Date: May 2011 Posts: 23	85 Magna - Slave Cylinder Oil Seal Hi guys - I'm having trouble finding a part. If anyone has worked on the slave cylinder on these bikes, you'll know there is one oil seal on the piston itself where the clutch pushrod makes contact with the piston. There is also another oil seal in the crankcase itself that keeps the oil (gear oil, I assume) in the crankcase. It is this second seal that I cannot find. It looks to be very similar in size to the piston seal but slightly (very slightly) larger. The piston seal is 8 X 18 X 5 (part #243094-001). I have gotten part 242919-001 (12.5 X 25 X and obviously this is way too big (should have looked at the dimensions first). I thought maybe it was 242781-001 but that is 14 X 24 X 6, which still seems too big. Can anyone tell me for sure which part I need? __________________ "Live forever or die in the attempt." - Catch 22

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07-26-2011, 08:34 AM	#2
The_AirHawk Founding Member Join Date: Jun 2007 Location: Livin' in a Van: down by the Mariana Trench Posts: 10,891	Do you know the material? (viton, buna-n, epdm, etc.) If you cannot find the "actual" seal, you might try a local bearing-parts house. Of-times, they can source "generic" seals and bearings, but it may take a bit to get it to you if they don't deal in metric that often (I happen to have a local parts house that DOES - got all the bearings and seals to rebuild a japanese grey-market tractor gearbox recently). Good Luck. __________________ *Parfois, on fait pas semblant* Sometimes, it's not pretend Oderint Dum Metuant Let them hate so long as they fear политики предпочитают безоружных крестьян Politicians Prefer Unarmed Peasants Nothing to see here, Citizen. Move along now...