The BSA A7-A10 Forum

Technical => Clutch, Primary, Gearbox => Topic started by: oval57 on 10.11. 2016 20:10

Title: Main shaft nut tension
Post by: oval57 on 10.11. 2016 20:10
I have some end float in my gearbox (52 plunger A10) main shaft. How much is acceptable and is there a recommended tension for the nut.. Being the nut located inside the gearbox outer case. Thanks
Title: Re: Main shaft nut tension
Post by: chaterlea25 on 10.11. 2016 21:43
Hi Oval
The bearing on the RHS of the gearbox should hold the mainshaft in position = zero endfloat
The nut on the kickstart ratchet should lock it all together
Do not over tighten the nut as it will distort the ratchet bush and jam it !!
a guess would be 20ft/lbs

John