Sunrise diamond sapphire

[Maclehose]

I acquired a sunrise diamond sapphire. I’ve an issue with the drive train. It appears to reverse ok,but sounds like a cog slipping on forward.
Would anyone have an exploded diagram for this?
The nearest I got was the parts diagram on Sunrise site.
Or helpful advice.
Many thanks,

[Maclehose]

Since I couldn't get an exploded diagram for the Diamond I decided to dismantle the drive train, nothing to loose.....
My initial diagnosis wasn't too far off.... a disintegrated inner wheel bearing.
No idea why, no sign of corrosion outer one fine...
Could anyone suggest a supplier for bearings?
Many thanks.

[woodygb]

Just buy a QUALITY replacement bearing made by a reputable company ....e.g. SKF , NSK or RHP.

Your bearings will should some markings on them somewhere.

http://www.microbluebearings.com/pages/REFERENCE.html