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balancer shaft o-rings ?
Posted: Mon Mar 16, 2009 1:43 pm
by Rane850
why front balancer shaft does not have o-ring but rear one has. This info is in parts cataloque but work shop manual says both shafts have o-rings.
I did not have o-ring in front shaft
Re: balancer shaft o-rings ?
Posted: Mon Mar 16, 2009 5:34 pm
by Mincehead
I might be wrong but a measured guess would be that the rear balancer shaft has some interaction with an oil gallery,therefore the shaft is fitted with O rings to stop any `bleed` of oil,thereby causing an oil pressure loss.
Yamaha would not have bothered machining a groove in the rear balancer shaft for O rings if they were not required.
