Now to put the pedal back together, start by installing the bearings into the pedal bearing cups, start the the cup that is nearest to the crank when the pedal is on the bike, and carefully put each of the 13 bearings into the grease and make sure they stay still. When all 13 are in, put some more grease on top and then CAREFULLY insert the greased axle being extra cautious not to knock any of the bearings out of place. When the axle is all the way in and seated against the bearings, twist it a few times to even out the grease, then hold the axle into the pedal body and flip it upside down, so that the threads of the axle face down, and then drop the bearings into the gap between the pedal body and axle, make sure you install all 13, then tap the pedal on a hard surface to seat the bearings on the bearing cup.
Next, take the bearing cone and push it into the pedal body and turn it by hand until it has threaded onto the axle, and then get the 9/16 socket and ratchet, and while holding the cone secure with the socket, rotate the axle by hand until it is tight and doesn't wobble, but not too tight as to squash the bearings into the cones and cups. Then remove the socket and wrench and get the cone washer, put it onto the axle on the inside of the pedal housing, make sure the washer flats match up to the axle flats. Then take the bolt and thread it onto the axle by hand, and then by using the 12mm socket and ratchet, you may need to use the 15mm spanner to hold the pedal thread flats if you need more leverage.
When you have done this, move onto the last step.