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Gearbox drain seal
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cave1941man
Second Gear User
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August 4, 2017 - 5:57 pm
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Hi just some advice changing gear box oil , i have drained old oil out ok my query is the sump nut screw has just a copper washer on it is this enough to seal the sump nut ? or should there be a fibre washer has well , or would a bit of PTF Tape on the thread be ok . or is copper washer sufficent to make a good seal.   Kind regards Derek ( cave41man )

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swalsh58
St. Mary's Bay, Kent
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August 4, 2017 - 7:23 pm
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Copper is a soft metal and should be good enough to make an oil tight seal. Assuming its in good condition of course.

Current bikes......1958 D5, a 77 Suzuki GT250 and a 77 Honda CB125S. I have a B175 in the workshop and a 76 Honda C90 waiting its turn. A 1980 Honda CB400N waiting for MOT.  Everyday ride is a 2011 Harley Davidson Sportster. 

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nickjaxe
Runcorn Cheshire UK
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August 4, 2017 - 8:07 pm
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You can soften a copper washer if its hardened by heating till its red...cool it by placing on cool steel...

My Bantam video              https://www.you.....jpOFmzRZRI

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cave1941man
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August 4, 2017 - 8:29 pm
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Hi nickjaxe and swalsh58 thankes for information copper washer in good nick will tighten it back up fingers crossed it will be ok. Thankes D J .

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