Gear shaft

Anything related to Lambrettas... ask tech questions, post helpful info, or just read and learn.
Snails
registered user
Posts: 397
Joined: Thu Jan 15, 2009 1:42 pm
Location: Sunny Manchester
Contact:

I'm trying to understand where the shims go on the shaft

Do you have it in the order (from the top) casing > shim > O ring > shim >wishbone?

Image
bristolmod
registered user
Posts: 1741
Joined: Wed Jan 07, 2009 8:42 am
Main scooter: Lambretta TV175 S3- what else!
Location: Bali-Hai bar, Locarno Ballroom Bristol, 1967!- mines a Brown Split!!
Contact:

on the older 2 piece set up its (from the top):-

circlip
shim
o ring
shim

so on your later version, just omit the circlip.

Chris
Scootering since 1968.
Grumpy225
registered user
Posts: 650
Joined: Sat Nov 24, 2012 7:59 am
Main scooter: Gori200, rt195, ld150,rb20
Location: Bakersfield, CA
Contact:

Has that whole piece been chromed? If it has, then there's your problem.
Snails
registered user
Posts: 397
Joined: Thu Jan 15, 2009 1:42 pm
Location: Sunny Manchester
Contact:

Thanks, no its not been chromed, just trying to understand where the bits go before fitting
Snails
registered user
Posts: 397
Joined: Thu Jan 15, 2009 1:42 pm
Location: Sunny Manchester
Contact:

So now its fitted I notice that stickys book says it should not the have the wishbone ends sitting too deep into the sliding dog and that if it does you can bend the arm of the wish bone to correct this? What's the best method to do this and can it be done in situ?

Mine obviously are looking a bit deep
User avatar
wack 63
registered user
Posts: 1254
Joined: Fri Nov 27, 2009 9:33 pm
Main scooter: '71 GP TS1
Location: Lincs
Contact:

Big screwdriver works for me
Snails
registered user
Posts: 397
Joined: Thu Jan 15, 2009 1:42 pm
Location: Sunny Manchester
Contact:

Yep that seems to do the job :)

Funny thing is that even with the legs bent out a bit it seems to catch a little at a one point - the shaft spins freely apart from a certain point where it just stiffens up - its only noticeable when the dog is in first gear position. Cant really understand it as the dog is round. As, with the gear box assembled its possible to push past it turning the xmas tree by hand, I'm tempted to ignore it as assume that the feet of the wishbone will wear a little on use and it will eventually disappear or not be noticeable when driving. The layshaft does not stick if the wishbone is not engaged with the dog so it must be something like a high spot on the dog's wheely bit that only impacts when the feet things are pushed hard left?
User avatar
wack 63
registered user
Posts: 1254
Joined: Fri Nov 27, 2009 9:33 pm
Main scooter: '71 GP TS1
Location: Lincs
Contact:

Seems to be a common thing probably caused by the selector having some float in the layshafts channels and the spring/ balls pushing against it. Once the endplate and oil are added it should be fine.
Snails
registered user
Posts: 397
Joined: Thu Jan 15, 2009 1:42 pm
Location: Sunny Manchester
Contact:

fantastic - I've just about had enough of refitting the gear selector and sliding dog after accidentally sliding the dog too far countless times (the layshaft was not far enough through the bearing). My neighbours are probably pleased too due to all the screaming and swearing that's been coming from my garage!
Post Reply Previous topicNext topic
  • Information
  • Who is online

    Users browsing this forum: No registered users and 6 guests