[How to replace ball bearings in Makita DGD800 Die Grinder]

Hello,

I just picked up a second hand Makita DGD800 Die Grinder. Anyway the nose at the end is squeely and heating up so I'm pretty sure the bearings are stuffed but I just can't find anything on how to remove the bearings from the shaft.

Any help would be appreciated ,

Thanks

Mick