Featured 1977 T140 Rebuild

Jim
There's a thrust washer at each end of the layshaft - only one each side - the grooves go against the case, you'll need to use some grease to hold the far one in when you are rebuilding the gearbox - the earlier parts catalogues show both needle bearings as well as the thrust washers so it's a bit easier to see:

 

Jim
John (lunmad) has done this on one of his videos
https://www.youtube.com/user/lunmad
You'll have to have a search through to find it, but as your push rod isn't flapping about I shouldn't worry too much. Check that the pushrod isn't mushroomed at the end and you should be fine.

By the way - when you rebuild the gearbox - don't do it the way the workshop manual suggests as you'll go mad trying to grow extra fingers and hands. Use this video, it's for a triple, but they are the same when putting back together. The method has saved many a layshaft from being slung through the window the gearbox rebuild bit starts at 2.10.

 

Groves face away from the case i think you meant to say aiding oil flow to the reciprocating parts

 

Ooops sorry, yes damn, mumble mumble.

 

Yep, grooved face to the dog NOT to the case.

It was really difficult to produce the parts catalogues as they could only show each part once. However, for some reason, I know not why (although I think I do), the parts catalogues, workshop manuals, haynes manuals, engine finishes, etc, weren't as good in the 70s.

Remember, we are EXPERTS, not just enthusiasts - check the attached:

 

I think your doing great, with the help if darkman and iron its looking good all round info and then practise, great special tool making also, well done keep up the great work Jim

 

Gotta agree you seem to have the best two guys on here at your disposal and the fact there checking each others advice is great and will work to your advantage I'm sure, Steady Ahead Jim

 

I would advise stick to this one Jim, most on here read through each one eventually

Then again if you feel you need a certain kind of advice then that's ok too just give a shout out on another thread, we don't have any set rules at all just feel your way through the forum and when you need a break look at the this made me laugh thread and relax

 

The drive plug 36 is for the earlier bikes with a bigger hole and a thread in the end of the camshaft that the plug screws into, never having done much with the later cams i can only assume the rev counter drive would fit the later cam as is.

 

Those rev counter drive plugs are shown on all the parts catalogues from 1969 onwards. It may be from the Trophy pre Tiger days when some of the TR6 models didn't have a rev counter drive, only a speedo.
I assume you bought it because it was in the parts catalogue rather than having taken it out when disassembling. If so, then stick it in the parts drawer so you can find it in a few years and wonder what it is.
Doesn't look like your bike had a drive in it - probably just a left handed plug. If you need a rev counter drive, let me know, I'm pretty sure I have a few laying around as they are quite expensive.
Keep up the good work.