The bearings and crank sat in dry ice overnight to get as much shrinkage as possible. I laughed to myself as I typed that btw.
I heated the case using a MAP gas torch. You can also use a hot plate or an oven. The GG workshop manual states 150 degrees. I put an IR thermometer and it said 155 degrees. Close enough!
Be gentle when handing the case. Other bearings may just fall right out when the case gets hot. Two of the bearings on the back side of the right-side case fell right out while doing this. The dropped right back in, but keep an eye out for this.
oh and wear heat resistant gloves when handling a frozen bearing or hot cases.
Square up the frozen bearing and drop it into the case. These took zero force to insert.
