Sliding Dog

[Littlewheels]

Can anyone tell me if its possible to replace the this part without removing the layshaft?
If I do have to remove the layshaft can I save the rear wheel bearing?
Thanks

[Scooterslag]

It would be a bit of a pig getting the new sliding dog over the spring and ball bearings, a lot easier with the layshaft out of the engine. Paul

[martyn dwane]

Done it many times with the layshaft in-situ.

[Adam_Winstone]

Done it many times with the layshaft in-situ.

Me too... but it's a pig of a job AND you need one of the sliding dogs that has big chamfers on the legs that correspond with the balls. Some makes of sliding dog have 2 legs chamfered, some have all legs chamfered, others have virtually no chamfer and would require you to file/grind your own.

Good luck.

[Littlewheels]

Thanks for the help.
Be using original part so not sure if that has chamfered legs?

[Storkfoot]

I have never even thought about trying as it only takes quarter of an hour to take the hub off and tap the Layshaft out. Lambretta life is hard enough without ball bearings flying all over

[hullygully]

Thanks for the help.
Be using original part so not sure if that has chamfered legs?

turn the selector upside down (ie looking from the rear where the pawls sit), if it has 2 x large chamfered internals they'll be larger than the rest
& slide on over the 2 x ballies bus

[Adam_Winstone]

^... exactly what I was on about.

[dickie]

Surely, you can only do that with the shaft out?

I can't get my head around this.

[Adam_Winstone]

No, you can do it in place but you need to compress the spring and balls enough for the chamfer to hold the balls in place so that the chamfer then compresses the spring fully when you push it home, with the pawls on the wishbone already aligned to channel.

It's a really tricky process but I've done it a number of times. I've also buggered 1 spring trying!!!

Certainly easier to take the hub off and layshaft out but it depends on circumstance.