More Teething Problems

iandusud · Post by **iandusud** » Mon Jan 03, 2011 6:01 pm

Having just completed the rebuild of a '56 Model 20 I've got a couple of problems. I've sorted out the oil return, but I've still got a problem with the centre stand return! for some reason the stand gets stuck half way up (or down). Is it just a case of loosening the nuts on the spindle, or am I going to loose the nuts!? Also I've got an oil leak from the dynamo to timing case joint. I fitted the cork gasket with silicon, but the screw that pulls the dynamo up agaist the timing case seems to chew it up somewhat. Any tips? Last one - the oil feed pipe is very close, ie touching, the exhaust pipe. I've even spaced the pipe out a bit from the support/spacer. Is this par for the course?

Thanks, Ian

Don Madden · Post by **Don Madden** » Mon Jan 03, 2011 8:02 pm

I use a thin nut, sawing the standard one if necessary, on the gearbox L/H side, bottom stud to avoid interferance with the stand lug. I have not seen this in the books but is necessary on my bikes.

I use a large o-ring on the dyno joint as the clearance is very small. Do not tighten the stud nut more than enough the compress the gasket or it will pull out of the dyno.

Do you have the correct exhaust support on that side? They come in two lengths.

Cheers, Don.

wilko · Post by **wilko** » Mon Jan 03, 2011 9:14 pm

Has the dynamo seal been replaced? They are often old and hardened? The one inside the end housing.

iandusud · Post by **iandusud** » Mon Jan 03, 2011 10:13 pm

Wilko, do you mean the cork seal? If not which one?

Ian

iandusud · Post by **iandusud** » Mon Jan 03, 2011 10:16 pm

Hi Don. Just checked the length of the support which is 2 7/8", which I think is the longest available. I'll try and get a suitable o-ring for the dynamo and look again at the centre stand arangement.

Ian

1608 · Post by **1608** » Tue Jan 04, 2011 1:23 pm

I believe that the banjo/short copper pipe on the feed hose is cranked to assist the very prob you describe. If possible try reversing the banjo union.

iandusud · Post by **iandusud** » Tue Jan 04, 2011 4:59 pm

1608, the banjo on this bike isn't cranked, so that would explain the prob. Thanks, Ian

wilko · Post by **wilko** » Tue Jan 04, 2011 10:44 pm

There is a seal on the inside of the end housing to stop oil leeching into the innards. There is a spacer behind the gear which the seal rubs on. This is a common undetected leak.

iandusud · Post by **iandusud** » Wed Jan 05, 2011 6:32 am

Thanks Wilko, I'll look at that.

Ian