Triumphrat

BOBDE

I have a 1971 Bonneville T120R with a 4-speed transmission. I took off the inner gearbox cover to replace the leaf spring. A gear on the bottom shaft (layshaft?) closest to the inner gearbox cover came off. It has 30 teeth so I'm guessing it's the Layshaft Low Gear. It has a flat side with the opposite side being indented or dug out I will say. One questison is which side faces the middle of the bike? Hope this makes sense. The other question is regarding indexing. Will I have a problem with this if I have not moved anything inside of the gearbox?

Thanks,
Boc De.

Garioch43

Boc De,

Check this and other videos produced by "Lunmad" on YouTube.


They are invaluable.

__________________


Sam Murray

Aberdeen, Scotland

Caulky

The raised lip around the centre faces inwards.
It will need to be indexed because the quandrant has dropped

BOBDE

Thanks for the information and the youtube link! I shall give it a go tonight when I get home.

Thanks, again,
Bob De.

BOBDE

Again, thanks for the information. I found the Triumph Manual to have exactly what I needed as far as indexing. It shows exactly where everything should be and describes exactly as well. My gearbox is in great shape now. Woo Hoo!!

Bob De.