With the cases painted and all the parts needed to rebuild the engine purchased the arrival of the rebuilt crank heralded the beginning of the process.
And the process started with a bare right hand case half and replacement main bearings sourced from Wemoto.
Along with seals from Yamaha and gearbox bearings from Simply Bearings selected by referencing the sizes stamped on the originals that I removed.
The process was repeated on the left hand side with all bearings hydraulically pressed in. I so pleased I invested in a press makes changing bearings so much easier, thoroughly recommend one if you're getting into this type of thing.
And on the outer side of the case, the seals.
Piston Broke in Bristol rebuilt the crank for me. New mains and a new rod, which apparently took a couple of attempts to locate the correct one as he wanted to find me an exact replacement with the correct oil passages in it. The green bag in the picture was just stopping the rod from rolling round in transport and had the small end bearing in it from the rod kit.
Next was to use my new tool, the crank puller. As the crank is in two half parts and pressed together with a set clearance you just can't hammer it into the main bearing but rather pull it through.
Basically the tool uses the thread on the alternator side to hook onto and then as you tighten the main bolt against the body the crank is drawn through. I probably haven't explained that one very well but it works. The only tough part was right at the end ensuring the crank was all the way in as it was getting tighter and then the crank was trying to spin. So holding that while using the spanner on the tool and exerting the required force while holding the crankcase would have been better to have been with an extra set of hands.
And finally the crank was installed.