My mechanic also suggested that yamaha had not prinited the correct torque for
the swing arm bolt. A coupe of extra ft/lbs wouldn't hurt.
Grant Gall
"nicholas.threader" wrote:
> Hi Bob ,
>
> You say that you have excessive play in your swing arm bearings at 24Kmi .
> It seems a bit early for bearings to go , what sort of play do you have ?
>
> I had some side to side play , which after a closer look just needed to have
> an extra shim fitted .
>
> The sort of play i had could be checked by undoing the swing arm and seeing
> if their was clearance , between the bearing dust cover and the frame on one
> side , when the swing arm is pushed to the other side , as far as i can
> remember i fitted a 0.5mm shim to take up the play.
>
> Before i fitted the shim i tried to remove the play by doing the swing arm
> nut up nice and tight , but due to the strength of the frame it was
> unsuccessful .
>
> When the linkage is disconnected , is their roughness in the swing arm up
> and down movement ? if so you probably need new bearings.
>
> If you need to change the bearings you should consider getting the long
> bushing in the middle ( your words , so you know what i'am talking about )
> it's actually called a collar.
> If the bearings are gone this will be damaged and needs to be replaced.
>
> You should replace the dust covers ( my words ) actually called thrust
> covers , since they keep out the dirt/dust which cause the bearings to fail
> , their are two covers.
>
> You should not need to get a new bolt , unless the bolt has been loose and
> the bike ridden while loose , as the shank could be damaged ( unlikely ). Or
> the threads on the bolt are damaged ( unlikely ).
>
> Sorry it's a long winded email , but i hope it helps.
>
> atb Nick T
>
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