I am new to 3d printing so bear with me

Having bought a CTC 3D printer, I have printed off some of the usual modification items and I seem to be getting the hang of things with only a couple of "string" puzzles to date.

The advice I need concerns installing the pillow block bearings on the Y Axis shafts.

On my machine the plastic toothed belt gears appear to be a "push" fit on the shaft and to get the bearings on the shaft I need to remove the gear.

Any help/suggestions gratefully recieved

Cheers

EvilC